单选专题训练(一)
初中八年级英语单选题专题训练100题(含答案)

初中八年级英语单选题专题训练100题含答案一、单项选择1.—Do you like watching sitcoms.—________.They are boring.A.Yes,I do B.No,I don't C.Yes,I did D.No,I didn't 2.A: Is your dictionary on the sofa?B: ________.A.Yes, I am B.No, I don’t C.No, it isn’t D.Yes, it isn’t 3.—Could you tell me something about the boy in red?—Sorry. I know nothing about him. We are ________.A.friends B.neighbors C.strangers4.________ nice weather it is! It’s the best time to fly kites.A.What B.How C.What a D.How a 5.Jack is ________ in our group. No one studies harder than him.A.the hardest B.the laziest C.the most hardworking 6.—Is this his book?—________. It’s her book.A.Yes, I amB.No, it isn’tC.Yes, it isD.No, he isn’t7.—________ there any flowers in our classroom?—Yes,________ .A.Are, there are B.Is, it is C.Is, there are D.Are, there is 8.—Look, the boss is angry with Alex.—Well, he came late again. But that’s no ________ to shout at him.A.problem B.lesson C.question D.reason 9.She was so angry at _______ he was doing _______ she walked out, and closed the door heavily behind her.A.what; that B.that; what C.that; that D.what; what 10._______ number of students in our school is 26000._______ number of them go toschool by bus.A.A; A B.The; The C.A; The D.The; A 11.You need to eat a ________ every day.A.egg B.fish C.carrot D.bread 12.Linda usually helps her boss type letters. She is a_______ .A.worker B.businesswoman C.secretary D.shop assistant 13.These are her ________.A.friend B.sisters C.brother D.uncle14.---Excuse me, sir. Could you tell me _______ to Ciqikou?---Yes. Take NO. 808 Bus and then you can get there.A.how can I get B.how I can get C.where can I get D.where I can get 15.Do you believe some special dogs can do things ________ man?A.as good as B.as well as C.as soon as D.as careful as 16.Our English teacher asked us to read a favourite book and then wrote a ________ of it. A.review B.sense C.memory D.record 17.用来表示“中国中央电视台”的是___________。
初中英语单选题专题训练100题含答案

初中英语单选题专题训练100题含答案一、单项选择1.—What do you have for lunch?—I like________ , because ________ are good for health.A.milk; it B.tomato; they C.vegetables; they D.ice-cream; it 2.下列四个选项中不含有字母Aa的发音的一项是________。
A.thanks B.H C.Dale D.Grace3.________ he ________ a round face?A.Do, has B.Does, have C.Does, has D.Is, have 4.Today is Tuesday. Tomorrow is ________.A.Wednesday B.Friday C.Thursday D.Monday 5.Clark usually ________ up at 6:30 every morning.A.get B.got C.gets D.getting6.下列字母中书写体占上中下三格的是:A.h B.f C.g D.t7.— It is said that Lin Tao saved an old lady from a big fire two weeks ago.— Yes. _________ brave young man he is!A.What B.What a C.How D.How a 8.—Would you like something to drink?—Yes. Please give me some ________.A.rice B.milk C.oranges9.Mrs Smith lives in our building. She is really a good because she is always ready to help people around her.A.visitor B.waiter C.neighbour D.artist10.I’m surprised to know that ________ can live without water for a long time in dry places.A.snakes B.dodos C.camels D.elephants 11.Grandpa ________ glasses when he reads.A.wears B.wore C.has worn D.was wearing 12.—Lucy, can you draw?—_____ But I can sing Chinese songs.C.Yes, I can’t.D.Yes, I can.13.Ed Smith doesn’t play sports.He only _______ them on TV.A.watch B.watches C.sees14._____ he have a long nose?A.Do B.Does C.Am D.Is15.— We don’t have eggs, Mom.— How about going to the ________ to get some with me?A.school B.library C.classroom D.store 16.John has a model plane, but his sister ________.A.doesn’t B.isn’t C.don’t 17.—Hello? May I speak to Lisa, please?—Oh, she has gone to the museum. Would you like to leave a ________?A.sentence B.message C.program D.question 18.The mobile game Travel Frog is popular with many people. They can’t wait to see if the frog comes back _________ they have time.A.when B.although C.before D.because 19.In which group, the three words belong to the same kind?A.reading; dancing; morning B.volleyball; swimming; tennis C.study; biology; hobby D.swimmer; world; museum20.A (n)__________ is a person whose job is to take care of people’s teeth.A.director B.engineer C.dentist21.Mr Brown is a teacher _________ is strict with all his students.A.which B.who C.where22.More trees _____________every year to make our city greener.A.is planted B.are planted C.was planted D.were planted 23.He goes to the __________for teeth cleaning twice a year.A.teacher B.dentist C.school D.museum 24.I’m not sure if Lily________ me. If I ________, I will go with you.A.will invite; will be invited B.invites; inviteC.invites; will invite D.will invite; am invited25.I don’t like math _______ it’s too difficult .26.— Could you help me do some cleaning after school?— If I _______, I will do it.A.am free B.will be freeC.have had time D.had time27.—Oh, there isn't enough for us in the lift.—It doesn't matter. Let's wait for the next.A.ground B.floor C.place D.room 28.--- Look! Some people are running the red lights.--- We should wait __________ others are breaking the rule.A.if B.until C.although D.because 29.—Finally our class ________ Class Two and won the first prize.—Congratulations!A.beats B.beated C.beaten D.beat 30.“Trick or treat” is a game played by children on________.A.the Lantern FestivalB.HalloweenC.Mother's DayD.Father's Day31.Nanjing Road Walkway is _________ of all the streets in Shanghai.A.crowd B.crowdedC.more crowd D.the most crowded32.I think ________ children learn to look after themselves, ________ it is for their future. A.the earlier; the better B.the earliest; the best C.the early, the good 33.一Do you like this brown shirt, Jack?一It isn't the right _____________ . It is too big for me.A.price B.size C.colour D.style34.--- The two old friends were ______ busy ______ with each other ______ the time.--- Yes. They hadn’t met for long.A.too; to talk; to forget B.too; talking; to forgetC.so; to talk; that they forgot D.so; talking; that they forgot 35.—Remember the first time we met, Joe?—Of course. You _______ in the library at that time.A.are reading B.were reading C.have read D.read 36.—Nothing matters more than people's safety and .—Yes, life is the most important.A.health B.wealth C.happiness37.I think the homeless cat is quite weak, so she well later by us.A.will be looked after B.has been looked afterC.is looked after D.was looked after38.My grandfather ______ a walk every day. He keeps in good health.A.takes B.take C.taking D.to take 39.Look! That is an______A.UFO B.bookcase C.ask D.eraser 40.— I called you at ten o’clock this morning. Why didn’t you pick up?— Sorry, I ________ the coronavirus vaccine(新冠疫苗) in the hospital at that time. A.will get B.am getting C.got D.was getting 41.– _______ Candy good at ________?– Of course. She is a good swimmer in the school team.A.Is, swimming B.Does, to swim C.Is, to swim D.Does, swimming42.--Can you spell it?--_______A.p-e-n.B.P-E-N C.Yes.p-e-n.D.Yes. P-E-N. 43.Since nothing is ________ than health, you should live a healthy lifestyle. A.valuable B.more valuable C.most valuable D.the most valuable44.—Were you at home at 7:00 last night?—Yes,I______at that time.A.do my homeworkB.did my homeworkC.was doing my homeworkD.am doing my homework45.下面四个标志中表示中国中央电视台的是.A.B.C.D.46.Big TV's aren't popular today _______ most people watch shows on their phones.A.even if B.so thatC.because D.as long a s47.—My parents always think “________.”—Not exactly the case, they just encourage you to be better in this way.A.Every dog has its dayB.Many hands make light workC.Too many cooks spoil the brothD.The grass is always greener on the other side48.The winter holidays are coming. David and his sister _____ them in Sanya.A.spend B.is going to spend C.are going to spend 49._______ tourists want to know the history of China, _______ they can visit the museum. A./… if B.Because… /C./… so D.If… / 50.Computers are very useful. They can help us get much ________ on the Internet. A.difference B.magazine C.information D.reason 51.Kobe Bryant was a very _______ basketball player, and he could play basketball very _______.A.well; good B.good; good C.good; well52.The boy ______ animals and he can jump ______ many animals.A.likes ;like B.like;likeC.like ;likes D.likes ;likes53._____ middle school students allowed to use mobile phone at school ?A.Do B.Did C.Are D.Can 54.—Linda, can you tell me something about Tu Youyou?—Sure. She is the woman won the Nobel(诺贝尔) Medicine Prize.A.which B.whose C.who D.whom 55.My cousin is going to work harder on________ because he wants to be an excellent scientist.A.science B.education C.medicine D.math 56.That film________magic because you can feel the wind and smell the food. A.like B.is like C.likes D.look like 57.Do you know the girl ________ won the first prize in the competition?58.---- The weather report says that it tomorrow in most parts of Hezhou city-----If it ,we won’t take the PE lesson.A.will rain; will rain B.will rain; rains C.rains. will rain D.rains. rains 59.There ______ a number of books on the bookshelf. And the number of the books ____ 50.A.are; are B.are; is C.is; is D.is; are60.If it ________, we ________ go to the Great Wall tomorrow.A.rains; will B.is raining; will C.will rain; won't D.rains; won't 61.Stephen Hawking’s story gives me much___ to face all kinds of difficulties. A.chance B.wealth C.courage D.decision 62.—Let’s go to the zoo this weekend.—Dad, you said so last week and the week before. ________.A.No pain, no gain B.Practice makes perfectC.It never rains but pours D.Actions speak louder than words 63.—What’s your job, Henry?—I’m a ________. I work late. I’m very busy when people come for dinner.A.nurse B.reporter C.waiter D.teacher 64.—Are you going to go skiing in Zhangbei next month?—I’m not sure. It all depends on _______ then.A.if I’m freeB.when will I have timeC.if I’ll have enough time65.—Did you see Mr. White just now?—Yes. He ________ his car when I met him.A.parked B.was parking C.is parking D.parks 66.There is something wrong with his ________. He is deaf.A.eyes B.legs C.ears67.My father ________ a ping-pong, but he ________ a ping-pong bat.A.have; has B.has; doesn’t have C.has; doesn’t has D.has; don’t have 68.—Could you tell me ________ back from her hometown?—Yes. She’ll be back this Sunday.A.when Alice came B.when did Alice comeC.when Alice will come D.when will Alice come69.My father’s sister is my________.A.grandmother B.cousin C.aunt D.uncle 70.The old man eats a little meat every day, such as ________.A.potatoes B.eggs C.sausages 71.Physics ______ my favorite while politics ______ her favorite.A.is; is B.are; is C.are; are72.Lily _______ a new schoolbag. _______ some books in it.A.has; There is B.have; There are C.have; There is D.has; There are 73.________ people ________ English in the U.K.?A.Is; speak B.Does; speakC.Do; speak D.Are; speak74.I think I will have a ________ holiday soon for coming National Day!A.three-days B.three-day C.three days D.three day 75.—Are those your pens? —______.A.No, it isn’t B.Yes, they areC.Yes, they’re D.Yes, it is.76.Excuse me. Could you please tell me _______________?A.how get to the Pacific CinemaB.how I got to the Pacific CinemaC.how I can get to the Pacific CinemaD.how should I get to the Pacific Cinema77._______does Jack get up? He usually gets up____7:00____the morning.A.What time ,at,in B.When,in,on,C.How,at.in D.Where,in,after78.For some , he didn't come to the meeting.A.advice B.decision C.reason D.choice 79.— What kind of home do you live in?— It’s ________ with thirty-six floors.A.a townhouse B.a farmhouse C.an apartment80.一Could you show me how to use the new mobile phone?—Why not read the ________ first? I'm not sure about it.A.instructions B.introduction C.information D.invitation 81._________listen to music in class.A.Don’t B.Isn’t C.Not82.We have some and for dinner.A.chickens ,hamburger B.chickens,hamburgersC.chicken,hamburger D.chicken,hamburgers83.What is the smallest of these?A.Rafwd B.Anm C.Niatg D.Sreoh 84.He __________ some cooking at that time, so ___________me.A.did, heard B.was doing, heardC.was doing, didn’t hear D.did, didn’t hear85.The visitor told a very ________ story about what he did for a ________ in Africa. A.lively; living.B.lively: life C.living; living D.alive; live 86.—Father’s Day is coming. I’m thinking about ________.—Good boy!A.what present I gave my father B.how I can give my father a surprise C.if I planned a party for my father D.where will my family have a big meal 87.Li Ming has______ brothers______ sisters.A.no, and B.not, and C.no, or 88.—Mary, I heard that you moved last month. What’s your new ________?—I live at 205 Helping Street now. Come and have a coffee if you are free.A.plan B.job C.hobby D.address参考答案:1.C【详解】句意:——你午餐吃什么?——我喜欢蔬菜,因为它们对健康有好处。
带答案高考英语单选题考点专题训练

带答案高考英语单选题考点专题训练单选题1、I hope the car won’t ________ while we’re driving in the countryside.A.break inB.break downC.break upD.break through2、_________they hard-working?A.IsB.AmC.AreD.Not is3、A new study shows anger may help people reduce the negative impacts ________ stress and help you become healthier.A.inB.ofC.onD.at4、The organization assists people based on need and gives the top _______ to those in the most serious and immediate danger.A.devotionB.divisionC.potentialD.priority5、______ black box of the two could be found first is a matter of public concern. A.WhichB.HowC.WhereD.Whether6、Improperly moving a person with a neck injury, for example, can ________ permanent spinal injury and paralysis. A.result fromB.suffer fromC.take onD.lead to7、One unfortunate accident in 1994 ______ an above-the-knee amputation(截肢) of Amy Palmiero-Winters’ left leg, leaving the passionate runner learning how to walk again.A.came afterB.cracked downC.resulted inD.took over8、—Mum, it is nice weather. I want to skate this afternoon.—Don’t you think the ice on the lake is too thin to _________ your weight? A.absorbB.bearC.catchD.take9、The man ________ you shook hands just now is our new English teacher.A.with whomB.whomC.with whichD.which10、An artist who was recently travelling on a ferry to the southern island discovered ______ a long lost antique Greek vase.A.at randomB.by chanceC.on occasionD.in turn11、The________ gained from this experience has invested my life with new meaning. A.departureB.insightC.proofD.setting12、In order to make greater progress in English, he attends extra classes ________.A.every other daysB.every other dayC.each second daysD.each two days13、—What did she say to you just now?—She asked me if I knew _______.A.whose pen is itB.whose pen it wasC.whose pen it isD.whose pen was it14、________ is known to the world, China’s Liu Xiang became the first Asian in history to win the men’s 110m hurdles at the Olympic Games.A.ThatB.WhichC.AsD.It15、Usually, there is an interval between the two parts of the concert _____ the audience can buy something to eat or have a rest.A.thatB.whichC.whenD.where16、______ darkness had again descended upon me ______ how much I had left unseen.A.When; I had realizedB.Only when; did I realizeC.Only when; I realizedD.When; I realize17、It has been ______ all over the world that China has made remarkable achievements in economy. A.acknowledgedB.criticizedC.assumedD.overlooked18、Your brother seems to be a good driver; ________, I don’t worry about the safety of my trip.A.even soB.even thoughC.thereforeD.however19、The social media platform Twitter found that the laughing face with tears of joy was the most used, ________ by the crying face and heart eyes emoji.A.followingB.followedC.being followedD.to follow20、Tomas is a very good leader and has the ability to _______ the best in others.A.bring outB.take outC.make outD.wash out21、The reason ______ you gave for the absence of your assignment was ______ you missed the deadline after getting a long-queued nucleic acid test (核酸检测).A.why; thatB.why; whichC.that; thatD.which; why22、It was a pleasure to learn to dance from Polly, who was a gentle and ______ young lady. A.braveB.dishonestC.forgetfulD.graceful23、Amanda hopes to live a simple life ______ she can just enjoy her activities rather than rush to meet the deadline. A.whereB.whenC.thatD.which24、Will it suit your _________ that we meet at 7.00 o’clock this evening? A.satisfactionB.appointmentC.delightD.convenience25、The world's oceans contain huge amounts of salt. In fact, if you____________ all the salt ____________ the oceans, you can use it to build a wall about 300 km wide and 1 km tall all around the Earth.A.take; apartB.dig; outC.move; inD.remove; from26、It was ________ I came across my best friend ________ I realized I had left the book at home that we hadattempted to finish together today.A.when; thatB.that; whenC.that; thatD.when;when27、Besides, it’s vital that you ________ your table manners.A.mindedB.mindC.to mindD.minds28、---Your suit ______! Why?---I got stuck in the rain.A.has ruinedB.had ruinedC.has been ruinedD.had been ruined29、You can only realize how hard this job is ________ you really experience it. A.unlessB.untilC.whenD.before30、All flights ________ because of the snowstorm, we decided to take the train.A.were canceledB.had been canceledC.having canceledD.having been canceled31、______ that all the ______ problems would be settled, John felt relaxed.A.Convinced; existingB.Convincing; existingC.Convinced; existedD.Convincing; existed32、—______ you interrupt now? Can’t you see I’m on the phone?—Sorry, sir, but it’s an emergency.A.CanB.ShouldC.MustD.Would33、His young sister is always curious ________ everything about physics and her dream is to be a physicist in the future.A.inB.withC.aboutD.of34、Regardless of many massive challenges, I ________ die ________ give up.A.preferred to; rather thanB.preferred; rather thanC.would; thanD.would to; rather than35、Not until very late that night ______ her house was ______ from the terrible flood.A.did she realize, under threatB.that she realized, under threatC.when she realized, in declineD.had she realized, in decline36、By 17:20, ______ was close to the closing time, all the fresh fruit had been sold. A.whenB.whichC.whatD.that37、Any potential triggering (触发) of atomic weapons would be ______ a disaster of immense scale. A.nothing less thanB.nothing better thanC.nothing more thanD.nothing worst than38、We’ve always regarded Dr. Smith as a man of integrity and high professional ________. A.interestB.attitudeC.competenceD.reputation39、I really think ________ impossible to finish the work in such a short time. A.itB.thisC.themD.that40、It’s strongly recommended that the machine ________ every year.A.repairB.to repairC.be repairedD.should repair41、The reason why I have to wash my clothes by hand is that my washing machine ______.A.is repairedB.is being repairedC.has been repairedD.was repaired42、________ the hospital, the region has a university, ________ was also built with government support. A.In addition to; whichB.In harmony with; thatC.On the basis of; whichD.As well as; that43、—Will you please sing for the sick at the city hospital to cheer them up?—_____.A.What about you?B.It's very kind of you.C.Certainly. I'll be glad to.D.I'm sorry to hear that.44、Artemisinin has become a vital part of the treatment for malaria, and is thought to save 100,000 lives a year in Africa alone.句子中谓语时态为现在完成时的是:A.has becomeB.is thoughtC.saveD.become45、—It was a wonderful National Day holiday trip. So, which city did you like better, Hangzhou or Wuxi?—______. There were good things and bad things about them.A.It’s hard to sayB.I didn’t get itC.You must be kiddingD.Couldn’t be better带答案高考英语单选题_010参考答案1、答案:B解析:考查动词短语词义辨析。
专题训练:电场中的图像问题

专题训练:电场中的图像问题一、单选题(共15小题,每小题5.0分,共75分)1.真空中有一半径为r0的带电金属球壳,通过其球心的一直线上各点的电势φ分布如图,r 表示该直线上某点到球心的距离,r1、r2分别是该直线上A、B两点离球心的距离.下列说法中正确的是()A.A点的电势低于B点的电势B.A点的电场强度方向由A指向BC.A点的电场强度小于B点的电场强度D.正电荷沿直线从A移到B的过程中,电场力做负功2.两带电量分别为+q和-q的点电荷放在x轴上,相距为L,假设无穷远处电势为零,能正确反映两电荷连线上电势大小φ与x关系的是下图中的()A.B.C.D.3.两电荷量分别为q1和q2的点电荷放在x轴上的O、M两点,两点电荷连线上各点电势φ随x变化的关系如图所示,其中P、N两点的电势为零,NF段中Q点电势最高,则()A.P点的电场强度大小为零B.q1和q2为等量异种电荷C.NQ间场强方向沿x轴正方向D.将一负电荷从N点移到F点,电势能先减小后增大4.两电荷量分别为q1和q2的点电荷放在x轴上的A、B两点,两电荷连线上各点电势φ随x 变化的关系图线如图所示,其中P点电势最低,且AP>BP,则以下说法正确的是()A.P点的电场强度大小为零B.q1的电荷量小于q2的电荷量C.q1和q2可能是同种电荷,也可能是异种电荷D.负电荷从P点左侧移到P点右侧,电势能先减小后增大5.有一场强方向与x轴平行的静电场,电势φ随坐标x的变化的图线如图所示,如规定x轴正方向为场强的正方向,则该静电场的场强E随x变化的图线应是图中的哪一个?()A.B.C.D.6.电场强度方向与x轴平行的静电场,其电势妓x的分布如图所示,一质量为m、带电量为+q的粒子(不计重力),以初速度v0从O点(x=0)沿经轴正方向进入电场.下列叙述正确的是()A.粒子从O点运动到x3点的过程中,在x2点速度最大B.粒子从x1点运动到x3点的过程中,电势能先减小后增大C.要使粒子能运动到x4处,粒子的初速度v0至少为2D.若v0=2,则粒子在运动过程中的最大动能为3q07.真空中有一静电场,其在x轴正半轴的电势随x变化的关系如图所示,则根据图象可知()A.R处的电场强度E=0B.若试探电荷从x1处移到x2处,电场力不一定做正功C.x1处与x2处的电场强度方向相反D.该电场有可能是处在O点的正的点电荷激发产生的8.如图甲所示为电场中的一条电场线,在电场线上建立坐标轴,则坐标轴上O~x2间各点的电势分布如图乙所示,则()A.在O~x2间,场强先减小后增大B.在O~x2间,场强方向一定发生了变化C.若一负电荷从O点运动到x2点,电势能逐渐减小D.从O点静止释放一仅受电场力作用的正电荷,则该电荷在O~x2间一直做加速运动9.一静电场沿x坐标轴方向的电势分布如图所示,则()A.在x1~x2之间存在着沿x轴正方向的匀强电场B.在x1~x2之间存在着沿x轴正方向逐渐增强的电场C.在x1~x2之间沿x轴方向电场强度为零D.在x1~x2之间存在着沿x轴负方向的匀强电场10.空间有一沿x轴对称分布的电场,其电场强度E随x变化的图像如图所示.下列说法正确的是()A.O点的电势最低B.x2点的电势最高C.x1和-x1两点的电势相等D.x1和x3两点的电势相等11.有一沿x轴分布的电场,以+x方向为电场正方向.其电场强度E随x变化的图象如图所示.下列说法正确的是()A.O点的电势最高B.x2点的电势最高C.正电荷从x1移动到x3电场力不做功D.x1和x3两点的电势相等12.光滑绝缘水平面上固定两个等量正电荷,它们连线的中垂线上有A、B、C三点,如图甲所示.一质量m=1 kg的带正电小物块由A点静止释放,并以此时为计时起点,并沿光滑水平面经过B、C两点,其运动过程的v-t图象如图乙所示,其中图线在B点位置时斜率最大,则根据图线可以确定()A.A、B两点间的位移大小B.中垂线上B点电场强度的大小C.B、C两点间的电势差D.A、C两点间的电势能的变化大小13.如图甲所示,Q1、Q2为两个固定的点电荷,一带负电的试探电荷仅在电场力作用下以初速度v a沿两点电荷连线的中垂线从a点向上运动,其v-t图象如图乙所示,下列说法正确的是()A.两点电荷一定都带负电,但电量不一定相等B.两点电荷一定都带负电,且电量一定相等C.t1、t2两时刻试探电荷在同一位置D.t2时刻试探电荷的电势能最大14.如图在(0,y0)和(0,-y0)两位置分别固定一个电荷量为+Q的点电荷.另一个带电量为+q的点电荷从(-x0,0)位置以初速度v0沿x轴正方向运动.点电荷+q从(-x0,0)到(x0,0)的过程中只受电场力作用,下列描述其加速度a或速度v与位置x的关系可能正确的是()A.B.C.D.15.如图甲所示,A、B是一条电场线上的两点,若在某点释放一初速度为零的电子,电子仅受电场力作用,从A点运动到B点,其速度随时间变化的规律如图乙所示,则() A.A点的场强大于B点B.电子在A点受到的电场力小于B点C.A点的电势高于B点D.电子在A点的电势能小于B点二、多选题(共11小题,每小题5.0分,共55分)16.在x轴上有两个点电荷q1、q2,其静电场的电势φ在x轴上分布如图所示.下列说法正确的有()A.q1和q2带有异种电荷B.x1处的电场强度为零C.负电荷从x1移到x2,电势能减小D.负电荷从x1移到x2,受到的电场力增大17.(多选)空间某区域有沿x轴方向分布的电场,其电势φ随x轴变化的规律如图所示.下列说法中正确的是()A.该区域的电场为匀强电场B.该区域的电场为非匀强电场C.该区域的电场方向沿x轴正方向D.该区域的电场方向沿x轴负方向18.(多选)真空中有两个点电荷,以两个点电荷中点O为坐标原点,以两个点电荷的连线为x 轴,过两个点电荷的中点且垂直x轴的直线为y轴建立直角坐标系,下面四幅图表示两个点电荷形成的电场中某物理量随坐标x或y变化的情况,下列说法中可能正确的是()A.可表示两等量异号电荷连线中垂线上电势随坐标y变化的情况B.可表示两等量同号电荷连线上场强随坐标x变体的情况C.可表示两等量同号电荷连线中垂线上场强随坐标y变化的情况D.可表示两等量异号电荷连线上电势随坐标x变化的情况19.(多选)如图所示,A、B为两个带等量正电的点电荷,O为A、B连线的中点.以O为坐标原点、垂直AB向右为正方向建立Ox轴.下列四幅图分别反映了在Ox轴上各点的电势φ和电场强度E随坐标x的变化关系,其中可能正确的是()A.B.C.D.20.(多选)某静电场中的一条电场线与x轴重合,其电势的变化规律如图所示.在O点由静止~x0区间内()释放一电子,电子仅受电场力的作用,则在-xA.该静电场是匀强电场B.该静电场是非匀强电场C.电子将沿x轴正方向运动,加速度逐渐减小D.电子将沿x轴正方向运动,加速度逐渐增大21.(多选)如图甲,某电场的一条电场线与Ox轴重合,取O点电势为零,Ox方向上各点电势φ随x变化的规律如图乙所示.若在O点由静止释放一电子,电子仅受电场力的作用,则() A.电子的加速度恒定B.电子将沿着Ox正方向运动C.电子的电势能将增大D.电子的加速度先逐渐减小后逐渐增大22.(多选)空间某一静电场的电势φ在x轴上分布如图所示,A、B、C、D是x轴上的四点,电场强度在x轴方向上的分量大小分别是E A、E B、E C、E D,则()A.E A<E BB.E C<E DC.A、D两点在x轴方向上的场强方向相反D.同一负点电荷在A点时的电势能小于在B点时的电势能23.(多选) 两个等量同种电荷固定于光滑水平面上,其连线的中垂线上有A、B、C三点,如图甲所示.一个电荷量为2×10-6C、质量为1 g的小物块从该水平面内的C点静止释放,其运动的v-t图象如图乙所示,其中B点处为整条图线切线斜率最大的位置(图中标出了该切线).则下列说法正确的是()A.B为中垂线上电场强度最大的点,其电场强度E=1×103V/mB.由C到A的过程中,物块的电势能先减小后变大C.由C到A的过程中,电势逐渐升高D.A、B两点电势差UAB=-5×103V24.(多选)如图甲所示,Q1、Q2为两个被固定的点电荷,a、b是它们连线的延长线上的两点.现有一带负电的粒子只在电场力作用下以一定的初速度从a点开始经b点向远处运动,粒子经过a、b两点时的速度分别为v a、v b,其速度时间图象如图乙所示.下列说法正确的是() A.Q一定带正电B.Q1的电量一定小于Q2的电量C.b点的电场强度一定为零D.粒子由a点经b点向远处运动过程中,粒子的电势能先减小后增大。
初中七年级英语单选题专题训练100题(含答案)

初中七年级英语单选题专题训练100题含答案一、单项选择1.After having a three-day rest, my father is now feeling _____ to go to work. A.enough good B.enough well C.well enough D.good enough 2.—What’s your favorite color?—________ favorite color is ________.A.I; red B.My; blue C.I; banana D.My; math 3.Do they have a soccer ball? No, _____A.they aren’t B.they doesn’tC.they don’t D.they do4.We love animals ________ they are our friends.A.but B.so C.or D.because 5.There is________X-ray coming from the box.________amazing thing!A.an; What B.a; How C.an; What an D.a; How an 6.—________ Mary have straight hair ________ curly hair?—She has curly hair.A.Is; or B.Does; or C.Is; and D.Does; and 7.The firemen tried their best and never gave up, even lost their lives in Muli. We should learn from their ________.A.spirit B.kindness C.fairness 8.—Sorry, I’m late. There was too much traffic on my way here.—I don’t think it’s a good ________. You are always late for our date.A.idea B.excuse C.time 9.—Mother’s Day is coming. Here is a pair of jeans for you, Mum.— ______ beautiful blue jeans! Thank you, Amy.A.How a B.How C.What a D.What 10.Sydney Opera House was a _________ of Australia.A.house B.park C.symbol D.rock11.I have waited for an hour but he hasn’t come yet. ____ waste of time!.A.How B.How a C.What D.What a12._________ useful information it is!A.How B.How a C.What D.What a 13.This week, the _______ seems to change every day: one day is hot; the next day is cold. A.time B.seasonC.weather D.way14.— Jim looks sad today. What’s wrong with him?— He ________ the math test yesterday and he cried for a long time.A.finished B.managed C.failed D.continued 15.—Does your brother like sports?—Yes, he does. He wants to be a ________ like Sun Yang.A.dancer B.teacher C.singer D.player 16.—Did you notice a girl in green come in?—No, I didn't. I ________ a book.A.had read B.have read C.will read D.was reading 17.下列字母含有相同元音音素的一组是________。
人教版一年级数学上册单选题专项专题训练

人教版一年级数学上册单选题专项专题训练1. 用两个完全一样的正方形可以拼成一个( )。
A .正方形B .长方形C .长方体2. 一本书14元,一枝笔6元。
书比笔贵()元。
A .20B .8C .143. 东方红电器商店电视机销售情况统计表如下,从图中可知哪天销售的最少?()星期一二三四五六日销售量(台)20 15 12 14 15 20 25A .星期二B .星期三C .星期四4. 比一比,最少的是()。
A .B .C .5. 下列错误的是()。
A .54+4=58B .63+15=68C .46+32=786. 4乘2写作()。
A . 3×4B .4×2C .3×27. 8-5-2=()A . 2B .6C .1D .78. 6+4=()A .10B .11C .12D .139. 小林家养了26只白兔,养的灰兔比白兔少得多,灰兔可能有( )只。
A .7B .22C .4010. 11-6+7=()A . 12B .8C .9D .1111. 计算56+8,一般来说可以先算()A .6+8B .50+8C .16+812. 选出得数比50大的()。
A .25+13B .45+12C .33+1213. 军军和楚楚都有一些气球,军军比楚楚多7个气球,楚楚比军军少( )个气球。
A .6B .7C .无法确定14. 15-7+4=()A . 2B .6C .12D .415. 下图中,()多?A .草莓B .香蕉16. 3+3+4=()。
A .7B .8C .9D .1017.A .小云B .小丽C .小华18. 小象跑在小牛的()A .上B .下C .前D .后19. 10+7=()A . 7B .9C .17D .320. 8能分成2和()。
A .7B .6C .5D .421.A .13B .10C .222. 图书馆有78本书,借走8本,还剩下()本A .60B .70C .8023. 羊大概有()只A .15只B .30只C .20只24. 小明:一班有48人,小雪:二班的人数比一班少一些,二班可能有多少人?()A .50人B .15人C .46人25. 44+3=()A .46B .47C .4826. 下图表示()。
中考化学鲁教版(五四学制) 专题训练--金属

2023年中考化学鲁教版(五四学制)专题训练--金属一、单选题1.下列化学方程式不正确的是 ①2222H OH +O 电解①322Fe+6HCl=2FeCl +3H ↑①2323CO+Fe O 2Fe+CO ↑高温①22H +CuO Cu+H O ∆①22Cu+ZnCl =CuCl +ZnA .①①①①①B .①①①C .①①①D .①①①①2.某兴趣小组在研究Mg -Al 合金、Fe -Al 合金、Zn -Fe 合金、Fe -Cu 合金时,发现其中一种合金7.5g 与足量的稀盐酸充分反应后产生了0.5g 气体,该合金可能是 A .Mg -Al 合金 B .Fe -Al 合金 C .Zn -Fe 合金D .Fe -Cu 合金3.根据金属活动性顺序Fe >Cu >Ag 判断,下列说法错误的是 A .反应Cu+FeSO 4═Fe+CuSO 4可以发生 B .反应Fe+2AgNO 3═2Ag+Fe (NO 3)2可以发生 C .铜片放入硝酸银溶液中,颜色由无色变成蓝色 D .铁丝插入硫酸铜溶液中,铁丝表面有红色物质析出4.现有a 、b 、c 三种金属,a 、b 分别与稀硫酸,c 的硝酸盐溶液作用的现象如表所示:根据表中所给的实验结果,判断这三种金属活动性有强到弱的顺序正确的是A .c 、b 、aB .a 、b 、cC .b 、a 、cD .a 、c 、b5.取一定量的Al 放入Cu(NO 3)2和AgNO 3的混合溶液中充分反应后过滤,得到固体和蓝色滤液,下列说法正确的是A .固体中一定有Ag 与CuB .滤液中的溶质可能是AgNO 3 Cu(NO 3)2 Al(NO 3)3C .AgNO 3一定完全反应D .Cu(NO 3)2 一定没有参加反应6.“中国高铁,世界第一”,高铁列车车体材料使用了含镍不锈钢,工业上火法炼镍的原理是:2C+NiO 高温2Ni+CO ↑,下列说法错误的是A .反应中NiO 发生还原反应B .气体产物中可能有COC .该不锈钢中还含有铁和碳D .该不锈钢合金的硬度小于纯铁7.下列排序正确的是 A .利用金属的年代:Al Cu Fe由先到后B .溶液的pH:24H SO NaCl NaOH由小到大C .氮元素的化合价:233N NH HNO 由低到高D .物质在水中的溶解性:()232CaCl CaCO Ca OH 由大到小8.下列实验目的通过对应实验操作能达到的是A .AB .BC .CD .D9.现有一包固体粉末,可能含有C 粉、NaCl 、NH 4HCO 3、CuSO 4、Fe 粉中的一种或几种。
专题训练之单选题(一)

复习选择题专练( )1.There a little oil in the bottle. A. are B. is C. aren’t D. am( )2.--In England, people eat a lot of beef. -- .We eat a lit of beef, too.A. So do theyB. So they doC. So we doD. So do we( )3.—Do you agree Jim ? A. with B. on C. to D. over( )4.What’s with you ? A. matter B. the wrong C. the matter D. the mater( )5.Would you like to sit the table the window? A. on…near B. at…byC. on…by D. near…by ( )6.Let’s ask the policeman. He know. A. can B. may C. will D. shall( )7.I bought an English book my way . A. in, home B. in, to home C. on, home D. on, to home ( )8.You seem about him. A. worried B. worrying C. worry D. to worried( )9.Both of the books are good.If you let me have one, is OK A. neither B. either C. both D. all. ( )10. Help yourself some fish. A. to B. to have C. have D. for( )11.I want to eat. A. something English B. English something C. English anythingD. Anything English( )12.May I your order now? A. take B. bring C. get D. took( )13. the end of the road, you’ll find a shop in front of you.A. On, theB. At, /C. In, /D. At, the( )14.The zoo is very . You’d better catch a bus. A. near B. far C. long D. short( )15. is the way the cinema? A. What, of B. Where, to C. Which, to D. How, of( )16.My home isn’t far from the school. It’s about .A. forty minutes’s walkB. forty minute’s walkC. forty minutes walkD. forty minutes’ walk ( )17. of his parents is at work. A. Neither B. All C. Both D. Some( )18.This one is not good, and that one is even . A. bad B. worse C. worst D. badly( )19.You go with us right now. A. need B. should C. would D. could( )20.We won’t go to the Great Wall if it tomorrow. A. snows B. snowedC. snow D. will snow ( )21.We must wash our hands we have meals. A. when B. before C. after D. because ( )22. “Stop and listen to me carefully.” Said the teacher. A. to talk B. talks C. talking D. talk ( )23.He the bus, sat down and bought a ticket. A. got in B. got out C. got on D. got off( )24.I’m sorry I can’t go fishing with you. I have a pain my right arm.A. inB. onC. with C. of( )25.The chicken smells . A. well B. badly C. hard D. good( )26.The farmers are busy vegetables. A. grow B. growing C. grew D. grows( )27.Don’t be late. You be there on time. A. must B. can C. may D. mustn’t( )28.Don’t worry. They always enjoys at the party. A. them B. their C. themselves D. theirs( )29.—Thank you for having us. We had a very good time today. —. Bye.A. No, thank youB. I’m afraid notC. You shouldn’t say thatD. It was my pleasure( )30.—May I smoke here?—.A.Yes, you mustB.Yes, you pleaseC.No,you needn’tD. No, you’d better not( )31.—Did the children go to the farm with the apple picking?—Yes, the first day they went to the farm and the second day went to the nearest farm.A. farB. fartherC. farthestD. farest( )32.—Can you see in the classroom? —No, I’m afraid not. Today’s a holiday. It’s Sunday.A. nobodyB. anybodyC. nothingD. something( )33. —Where’s Jim? —He went to Beijing last week. He be back until next month.A. didn’tB. won’tC. wasn’tD. doesn’t( )34. —Look! The woman in the lake is for help. She can’t swim.A. smilingB. laughingC. cryingD. saying( )35. —Is everything OK? —Yes, we want the meeting to start .A. in timeB. at timesC. on timeD. of time( )36.I can buy because I have no money. A. anything B. something C. nothing D. everything ( )37. —Where’s my football? —It must be in the room.A. anywhereB. somewhereC. any whereD. some where( )38.I feel thirsty. Please me something to drink. A. take B. bring C. carry D. help( )39.It’s a secret. We’d better tell her. A. not B. no C. don’t D. won’t( )40.The little boy is young look after himself. A. too, not to B. to, too C. too, to D. very, to( )41. —Mum, where’s my blue sweater? I can’t find it anywhere.—Don’t worry. You’ll find it somewhere.A. Soon or lateB. Sooner or laterC. Soon and lateD. Sooner and later( )42. —Is all the food there? —No, there’s nothing. The monkeys all the food.A. ate upB. ate outC. eat upD. eat out( )43. —Oh, the monkey have our picnic basket. —Quick! Let’s before they eat the food.A. take it awayB. get it backC. take away itD. get away it( )44. —Daddy, a dog, a dog is coming! —You are a big boy now. Don’t . TommyA. afraidB. worryC. be afraidD. be worried( )45. —How beautiful your school is! —Yes, our school is what it was three years ago!A. any moreB. not moreC. any longerD. no longer( )46.In the evening I told him story. A. my all B. the all C. whole my D. my whole( )47.She said she would go there. A. not…more B. not…any more C. no more D. not…longer( )48.We got up early, we didn’t catch the train. A. and B. so C. but D. then( )49.He the boy English for an hour every day.A. keep, readingB. kept, to readC. keeps, readingD. keeps, to read( )50.I the picture three days ago. A. finish drawing B. finished drawing C. finished draw( )51.The boy a face in class. All children . A. make, laugh B. makes, laughs C. made, laughed ( )52.Our country becomes . A. good and good B. well and well C. better and better ( )53.She was hungry and she stopped something. A. eating B. eats C. to eat D. having( )54.Don’t turn the radio, please. My father is now.A. on, asleepB. on, sleepC. off, sleepingD. off, slept( )55.How did Ling Feng make the baby crying? A. stop B. to stopping C. stopping D. to stop ( )56.How old is this little baby? . A. It is only one little month oldB. She is only one monthsC. He is only one month oldD. It’s only one month( )57.Igot up late. I go to school in a hurry. A. have B. have to C. has D. had to( )58.He his pen at home. He wanted to borrow one. A. leave B. left C. forgets D. forget ( )59.You’d better your coat you. It’s cold there.A. bring…forB. take…forC. take… withD. bring… with( )60.I told him run in the street. It was dangerous. A. doesn’t B. not C. didn’t D. not to( )61.The film is interesting, I don’t like it. A. or B. but C. and D. so( )62.After that he sang . A. not any more B. not more C. no more D. no again( )63.Are you the 100-meter race? A. for B. in C. at D. to( )64.Wu Ping dropped his stick. He stopped it. A. get B. to get C. getting D. gets( )65.Who won the race? A. girl’s 100 meter B. girl’s 100-meters C. girls’ 100- meter( )66.It was difficult the boy’s relay. A. win B. winning C. to win D. won( )67.—Who taught to write? —He learnt all by .A. him, him B. his, himself C. his, him D. him, himself( )68.He is tall I. A. a little, than B. more, than C. as, as D. so, as( )69. she swim when she was nine years old? A. Can B. Could C. Can’t D. If( )70.He two balls from the top of the building. A. jumped B. dropped C. passed D. fell( )71.He and his parents teachers in the same middle school. A. all are B. are all C. both are D. are both( )72.He tries to study hard and catch up his classmates. A. to B. on C. in D. with ( )73.He was very tired but he went on machines.A. mendingB. mendC. to mend D. mended ( )74.They passed the sticks the next runners the same time.A. on, to, inB. on, in, toC. on, to, atD. in, to, at( )75.Why didn’t Mr. Fat enjoy ?Can you the answer?A. himself, find outB. himself, findC. him, look forD. very much, find out( )76. —Would you please look out of the window? —Sorry, I do it again.A. don’t…won’tB. not…won’tC. not to…mustn’tD. won’t…can’t( )77.He found very difficult to learn English . A. it, good B. that, good C. it, well D. that, well ( )78.What you from seven to nine this morning? A. did, to B. do, do C. are, doing D. were, doing( )79. —Why was Tom’s mother angry Tom? —Because he couldn’t pass the math exam.A. withB. atC. toD. for( )80. —Did she sing well? —Yes, we often heard her in the next room.A. singB. to singC. sangD. sings( )81. —English is very important now. —You must try English well.A. learningB. to learnC. learnD. learned( )82.They supper when I on the door. A. are having…are knockingB. had…were knockingC. are going to have…knockedD. were having…knocked( )83.Brian is good at Chinese. He several hours books about it every day.A. spend…readingB. spent…readC. spends…readingD. spends… to read( )84. elephant is much heavier than sheep. A. A…a B. An, a C. The, the D. /, /( )85.Do you remember name of cinema? A. the…the B. the…a C. a …the D. /, /( )86. —Do you know what interested ? —I’m not sure.A. is he…inB. he is…withC. is he…withD. he is…in( )87. —What did you buy your mother for Mother’s Day? —I bought her a pair of shoes.A. forB. toC. withD. /( )88.Bob is much younger than Mike. But he is as as Mike. A. tall B. taller C. much taller ( )89.Can you make them to get on each other?A. decide…with wellB. to decide…well withC. decides…with wellD. decide…well with( )90. —I’m sorry to trouble you. A. It doesn’t matter B. All right C. No. D. You’re right( )91. —Are you interested in maths or history, Mike? —. I prefer physics.A. BothB. EitherC. NeitherD. Nothing( )92.We TV at midnight when our uncle came in.A. are watchingB. watchedC. were watchingD. watch( )93.Iwant to know . A. why doesn’t he give up smoking B. why does he smoke a lot C. why he doesn’t give up smoking D. why does he give up smoking( )94.Would you please drop your shoes on the floor during the night?A. not toB. notC. don’tD. never to( )95.I’m hungry, mum. But there is food in the fridge. A. a few B. a little C. little D. any( )96. —May I watch TV before I finish the letter? —No, you .A. write, don’tB. wrote, needn’tC. writing, won’tD. writing, mustn’t( )97. —Which film are you going to see?—There’s nothing good at the moment. .Would you like to go to a concert?A. Let’ do something elseB. Let’s go to buy the ticketsC. Let’s go there right awayD. Let’s go to buy some DVDs( )98. —How long does it take you to go to your school? —About fifteen walk.A. minuteB. minutesC. minute’sD. minutes’( )99.Betty Smith is not married yet, I think, for people call her .A. Mrs. SmithB. Miss BettyC. Mr. SmithD. Miss Smith( )100. —How are you this morning? —. A. Yes, I’m fine. B. It’s fine this morning.C. How are you, Tom.D. Not very well. I have a pain in my head.( )101—When is Bob’s birthday?. —November 21st, the same day .A. to youB. as yoursC. with mineD. like me( )102.The teacher thought he would try to make the students harder.A. workB. workingC. workedD. to work( )103.Which of these inventions is useful of all? A. the second B. the second most C. much more( )104.At the end of the last lap, Lily and Susan were .A. neck to neckB. neck for neckC. neck and neckD. neck by neck( )105. we’re having today!A. What a fine weatherB. How fine the weatherC. How fine weatherD. What fine weather ( )106. —How carefully you are writing! —.A. Don’t mention itB. Not very beautifulC. It’s kind of you to say soD. That’s not true( )107. —Don’t read in the sun. —No, I . A. mustn’t B. don’t C. won’t D. can’t( )108.Will you please it yourself. A. don’t do B. not to do C. not do D. don’t to do( )109.I have to stop and have a rest five minutes. A. every B. each C. other D. all( )110.Wait for a moment, I’ll give you to eat.A. something differentB. nothing differentC. different somethingD. different nothing( )111. Yesterday I saw a man on the road. A. lay B. was laying C. lying D. lie( )112.He hurried to get the box. A. of B. off C. at D. on( )113. —What happened to Mary’s brother? —He off when he a motor bike.A. was, falling, rodeB. fell, was ridingC. falls, is ridingD. was falling, was riding( )114.It was very kind you my son to the hospital.A. of, to takeB. for, to takeC. of, bringingD. for, to bring( )115.The students saw the accident near the gate yesterday.A. to happenB. happenedC. happensD. happen( )116.He looks today than yesterday. A. more tired B. tireder C. most tired D. much tired( )117. both enjoy fishing on Sunday. A. Wang B. Wangs C. The Wang D. The Wangs( )118.She went to the hospital as quickly as she . A. could B. walked C. can D. did( )119.You’d better the book.. bad book it is!A. not read, HowB. not to read, What aC. not read, WhatD. not read, What a( )120. a pair of glasses the nose the teacher came.A. With, onB. Wearing, overC. Having, inD. Putting, on参考答案:1-5 BDACB 6-10 BCABA11-15 AABBC 16-20 DABBA21-25 BCCAD 26-30 BACDD31-35 CBBCC 36-40 CBBAC41-45 BABCD 46-50 DCCCB51-55 CCCAA 56-60 CDBCD61-65 BCBBC 66-70 CDCBB71-75 BDACA 76-80 BCDAA81-85 BDCBA 86-90 DAADA91-95 CCCBC 96-100 DADDD101-105 BABCD 106-110 CCCAA111-115 CBBAD 116-120 ADADA。
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单选专题训练(一)1. China has ______ long history and she is the first country to invent printing in ______ history.A. a; theB. /; /C. a; /D. /; the2. In Martin Luther King’s time, the money spent on educating a black child was justone fourth of ____ on each white child.A. that spentB. what to be spentC. it had beenD. which was spent3. After 20 years in an African country, I returned home and found it changed ______recognition.A. overB. beyondC. more thanD. out of4. Do you know the of the saying I just referred to?A.resourceB.sourceC.courseD.cause5. ______criticize my son, I______ help him find a more effective way to learn English.A. Rather than; prefer toB. Other than; would ratherC. Rather than; would like toD. Better than; had better6.By the end of this year, 160 new students ___ in the English Department of this world famous university.A.have enroll B.will have enrolledC.have been enrolled D.will have been enrolled7. The handbook gives ________ details about the functions of this washing machine.A. steadyB. secureC. potentialD. precise8. Parents and their children often disagree about the amount of freedom and responsibility that young people ______.A. would haveB. are havingC. are to haveD. are about to have9. All flights ________ because of the snowstorm, many passengers could do nothingbut take the train .A. had been canceledB. was canceledC. having been canceledD. being canceled10.After the meeting, Premier Wen Jiabao walked onto the platform, _____ himselfin a chair and prepared for answering questions.A. seatingB. seatedC. being seatedD. had seated11.Not having finished his homework, _____ to watch TV.A. mother forbade himB. so he was forbiddenC. he forbadeD. he was forbidden12. The magician picked some persons from the audience _____ and asked them tohelp him with the performance.A.by accident B.in vain C.at random D.on average 13. That is the only way we can imagine ______ the overuse of water in students’bathroom.A. reducingB. to reduceC. reducedD. reduce14. Before I buy a car, I would like to have a mechanic, whom I truly trust, ______.A. look it overB. looking it overC. to look it overD. looked it over15. ______ on his father’s shoulders made it possible for Victor, a boy of five, towatch the show.A. Having carriedB. CarryingC. Being carriedD. Carried16. ------I’m afraid I can’t finish the book within this week.------______.A.Please go ahead B.That’s rightC.Not at all D.Take your time17. Though ______ of danger, he still went swimming in the river, which cost hislife.A. was warnedB. warnedC. warningD. to be warned18. ____ that witnessed the emergence of and the ongoing debate over GeneticallyModified Food.A.During the first 10 years in the 21st centuryB.That it was in the first ten years of the 21st centuryC.It was in the first ten years of the 21st centuryD. It was the first ten years of the 21st century19. In that newly-built computer centre, there are a great number of moderncomputers, with six experts _______ questions that users may ask.A. answeringB. answerC. answeredD. being answering20. The problem of carbon emissio ns ______ in society now has aroused the public’swide concern again.A. to be discussedB. being discussedC. having discussedD. having been discussed21. He ___ away before we arrived, since the house was deserted.A.shall have gone B.should have goneC.could have gone D.must have gone22. Many factors contribute to____, but the most destructive is the role that humanshave played.A. animals to dieB. dying animalsC. animals died outD. animals dying out23. —Jack, this is the third time that you have been late this week.—Sorry, sir, but I was _____ for 15 minutes on the way.A. held upB. put upC. taken upD. given up 24.______all by herself for many years, the old lady is sometimes very difficult______.A. Having lived; to be got along withB. Living; to get on well withC. Having lived; to get along withD. Living; to get along25. The new movie____________ to be one of the biggest money-makers of all time.A promises B.agrees C.pretends D.intends26. I have promised that my daughter _______ get a new electronic dictionary on hernext birthday.A. shouldB. mustC. shallD. would27. My car's performance is ___ since the engine's been tuned and the tires have beenchanged.A.better as twice B.twice as the conditionC.twice as good D.twice as better28.My uncle is quite worn out from years of hard work. He is no longer the man _____ he was fifteen years ago.A. whichB. whomC. whoD. that29. I advise you to stay away from Maria. Although she is usually easy-going, she______ be quite annoying sometimes.A. canB. needC. mustD. should30. _____ he did a great deal to help the poor was known to every voter.A. ThatB. WhatC. WhetherD. As31. In fact, many of our guests ask for accommodations here _________ they come.A. at timeB. first timeC. for the first timeD. each time 32.Nobody believed his reason for being absent from the class ______ he had to meet his uncle at the uncle.A. whyB. thatC. whereD. because33.______, but he still couldn't understand the logical connection of the two subjects.A.Having told many times B.Having been told many times C.He had been told many times D.Many times as he was told34. – Can you think of a case in which the ecology of an idea is in balance?-- Sure. You see, _________ an environment is undisturbed, the ecology of the area is in balance.A. unlessB. asC. thoughD. where35. The most important thing we must consider before carrying out the plan is ______it is possible for us to carry it on.A. whenB. whyC. whetherD. that36. The more things a man is interested in, ______.A. the more he will have opportunities of happinessB. the more opportunities of happiness he will haveC. the more opportunities of happiness will he haveD. much more opportunities of happiness he will have37.I want to use the same tools ____ used in your factory a few days ago.A. as wasB. which wasC. as wereD. which38. You don’t think she is more anxious to go there alone than you are, ______?A. do youB. are youC. isn’t sheD. don’t you39. _________ solve the medical care for the low-income earners and theunemployed.A. Only by joint efforts can weB. By only joint efforts we canC. Only by joint efforts we canD. Only we can joint effort40. Man must keep in mind that it will be years ______ the earth recovers from thedamage he makes to it.A. whenB. untilC. sinceD. before41. The pilot lost contact with the military base,________ the plane crashed in thedesert.A. by means of whichB. for whichC. in case of whichD. as a result of which42. As a new-comer of the class, Sarah hopes to become a friend of___ s hares herinterests and has common outlooks.A.whoever B.whomever C. no matter who D.anyone 43. If he had a real talent for painting, a painter he should be; if not, he must take tosome other craft, ____ he would have the chance of making himself a decent livelihood.A. whereB. whichC. asD. when44. ____ his father and stepfather were Muslim, American black president, BarackObama is Christian.A.When B.Even C.As D.While45. Madame Curie, for _________ life had once been very hard, discoveredradioactivity.A. whomB. whoseC. whoD. which46. If you want to do the experiment again, you’d better be more careful ______ youmake a mistake.A. only ifB. as ifC. so thatD. in case47. By no means ______to go hiking this weekend.She has too much homework todo.A.will Jane agree B.Jane will agreeC.will agree Jane D.did Jane agree48. In our daily life, we often come across occasion ______ we have to tell white liesto avoid hurting others.A. thatB. whichC. whenD. where49. What would have happened _______, as far as the river bank?A. Bob had walked fartherB. If Bob should walk fartherC. Had Bob walked fartherD. If Bob walked farther50. ____ as the main reason for the recent world-wide economic problems is the factthat US government would hardly accept.A. RegardingB. To regardC. RegardedD. Being regarded1---5 CABBA 6----10 DDCCB 11----15 DCBAC 16---20 DBDAB21---25 DDACA 26---30 CCDAA 31-----35 DBCDC 36---40 BCAAD41---45 DAADA 46---50 DACCC单选专题训练(二)1. Tour guides need to be independent, outgoing and have _____desire to share ____ information.A. /; theB. a; /C. the; theD. a; the2. In Beijing ,although there is a good public transport system, ________ private car is still becoming ________ popular means of transportation.A.不填;the B.the ;a C.the ;the D.a;不填3. It is no ________ arguing with Bill because he will never change his mind.A. useB. helpC. timeD. way4. —How beautiful the dress looks on you ! Don’t you want, Madam?—Well ,please show me .A.one; other B.it; other C.it; another D.one; the other5. John didn’t choose of the ties and went away without looking at a third one.A.many B.either C.all D.any6. I will visit Austria ______ the invitation of my friend this summer vacation.A.by B.for C.to D.at7. —I thought you would join in my birthday party tomorrow.—I would if I ____ to attend an important meeting.A.don't have B.didn't have C.will not have D.would not have8. Tired, Jim was fast asleep with his back a big tree.A. inB. belowC. besideD. against9. —When did you last hear Jay?—He phoned me this morning, and we agreed a time and place to meet.A. of, toB. about, withC. from, withD. from, on10. What the scientist said sounded strange, ______ ,they made sense.A.therefore B.however C.since D.otherwise11. It is known to us all E-mail is______ efficient than sending a fax.A.much B.many C.more much D.much more12. While studying, fix your mind on what is really important or you will __remembering nothing.A. end upB. take upC. lead toD. stick to13. Nothing after the terrible fire caused by the careless doorkeeper.A.left B.continued C.kept D.remained14. —Guess what? I happened to meet Johnson in the street last Friday.—If my memory serves me correctly, you ____ each other for ages.A.haven't seen B.hadn't seen C.didn't see D.don't see15. If you are a migrant worker who have no Guangzhou hukou, you might still rent a house________ you find a contract job with a Guangzhou company.A. now thatB. on condition thatC. even thoughD. since16. Jane was elected chairman of the committee. This is the first time that a woman ___ to the post.A. has appointedB. had appointedC. has been appointedD. had been appointed17. ––Have you seen my e-mail about our TESL project?––Yes. Luckily I checked my e-mails yesterday. Normally I ______ my e-mail box for days.A. haven’t openedB. didn’t openC. hadn’t openedD. don’t open18. I ____ toward the door to go outside when suddenly Jim opened it unexpectedly.A.walked B.was walking C.had walked D.had been walking19. I have to see the doctor because I a lot lately.A. have been coughingB. had coughedC. coughedD. cough20. The train for Shanghai _____ at 9 tomorrow morning. So you are _______ to get everythingready at 7 o’clock.A. will leave, supposedB. are leaving, supposeC. leaves, supposedD. is going to leave, suppose21. The science fiction was not published until 35 years after it .A. has been completedB. has completedC. was completedD. completed22. Once ____ the forest, you ought to remain ____ you are waiting for help.A.losing; where B.losing; there C.lost; there D.lost; where 23. With the victory at the French Open, Li Na has reached NO.4 in the world, ______ theprevious Asian record.A.equaled B.equaling C.to have equaled D.having equaled24. Alexander tried to get his work in the medical circles.A. to recognizeB. recognizingC. recognizeD. recognized25. This advice is of some value, I think. It deserves _____________.A. being consideredB. to be consideredC. to considerD. considered26. --- Who are you waiting for?--- _____ us a lecture this afternoon.A. The professor wants to giveB. The professor will giveC. The professor about to giveD. The professor to give27. He told us whether _______ a picnic was still under discussion.A. to haveB. havingC. haveD. had28. ___ in 1995, the Metro system for China's commercial capital has doubled in reach to 420kmin just the past year;Shanghai did in 15 years ___ London did in 150.A. Beginning; whatB. Beginning; thatC. Begun; whatD. To begin; that29. We rushed to the football court, only to see a sign_____ into the ground reading PERIODICMAINTENANCE (定期维修).A.knocked B.knocking C.to be knocked D.being knocked30. My son has gone abroad. I’m looking forward to him_______.A. returnB. to returnC. returningD. returned31. Walking exercises___ be boring at times, but on a clear sunny morning nothing could bebetter.A.may B.will C.must D.should32. Thank you so much! But for your text message, I____ home without my ID card this morning.A. would have leftB. would leaveC. had leftD. left33. You buy a gift, but you can if you want to.A. mustB. mustn’tC. have toD. don’t have to34. ––Do you think it wise for parents to do everything for their children?––No. That’s ______ they’re mistaken.A. whetherB. whenC. whatD. where35. Mr. Frank asked me a question I could go with him to he called theTreasure House the next week.A.that; which B.whether; that C.whether; what D.that; where36. His family members gave some examples of _________ his drinking and smoking hadaffected the family.A.that B.what C.how D.whether37. Has it ever struck you ______ it would be like to have no one you could trust?A. thatB. whoC. whichD. what38. Eliza remembers everything exactly as if it ______ yesterday.A.was happening B.happens C.has happened D.happened39. you are aware of the trick used in advertisements ,I don’t think you are eager to buy.A. WhetherB. UntilC. ThoughD. Once40. Many of them turned a deaf ear to his advice, _____ they knew it to be valuable.A. as ifB. even ifC. now thatD. so that41. – I like your new shoes!– Thanks. I had to try on almost a dozen pairs ___________ I decided to get them.A. asB. whenC. afterD. before42. He is now paying __attention to what the article says than to the way___ the language is used.A. a lot more; thatB. much more; on whichC. very more; in whichD. even more; by which43. We hope the measures to control prices, are taken by the government, will succeed.A.as B.when C.since D.after44. There are many examples throughout the world ______ talented players are ignored by theirnational managers.A. whenB. whereC. whichD. whose45. —Have you seen the film The War Horsey—Of course, I have.It was in my hometown ______ it was made.A.where B.when C.that D.which46. —Did you know any French before you arrived in Paris?—Never it, actually.A. had I learnedB. have I learnedC. was I learningD. I learned47. Either you or one of your students to attend the meeting that is due tomorrow.A. areB. isC. haveD. be48. According to some studies, EQ is _____ important, if not more important than IQ.A. soB. veryC. evenD. as49. --- Angelia looks blue today.--- Yes, but she won’t say_____ bothers her.A . why is it thatB . that is whyC . it is whatD . what it is that50. ---Jack is really a brave guy.--- ___. And we can’t admire his courage ___.A. So is he; a lotB. So he is; very muchC. So he is; too muchD. So is he; a little单选专题训练(二)1-5 BBACB 6-10 DBDDB 11-15 DADBB 16-20 CDBAC 21-25 CDBDB 26-30DACAC 31-35 AADDC 36-40 CDDDB 41-45 DAABC 46-50 ABDDC。