单项选择题
一) 单选题1. The police investigation discovered that three young men were ____ in the robbery.(A)caught (B) involved (C) connected (D)tightened难度：中 分值：1.02. He never married, but his life was____ lonely(A)by far (B) farfrom(C) so far (D)so far as难度：中 分值：1.0 3. If you _____ your name and address on the card, we’ll send the book to you as soonas it is returned.(A) goover(B) fillin (C) findout(D) carryout难度：中 分值：1.0 4. “We’ll do what we can to get the goods ________ on time,” said the manager ofthe company.(A)reach(B)returned (C) delivered (D)come难度：中 分值：1.05. Vickie had most probably ______ her for another sort of girl(A)regarded (B) viewed (C) mistaken (D)looked难度：中 分值：1.0 6. Linda can barely read and write though she has recently graduated from high school.(A)seldom (B) undoubtedly (C) perfected (D)hardly难度：中 分值：1.07. Be sure to ________ your work at the end of the exam.(A) lookover(B) hangup (C) setaside (D) catchsight of难度：中 分值：1.08. _______ his wealth, he is not happy(A) Exceptfor(B)In spite of(C) Becauseof(D)besides难度：中 分值：1.09. One of his many faults is that he never _______ anything very long.(A) decideson(B) sticksto (C) goesover (D) makessure难度：中 分值：1.010. He cought to have handed in the paper yesterday . That’s what he __________.(A)shoud have done (B) should do (C)should(D)should be doing难度：中 分值：1.011. It is a worthwhile experiment even if it may fail.(A)necessary (B) complete (C) valuable (D)perfect难度：中 分值：1.012. The school bus was_____ by a thick fog.(A) heldup(B) brokenoff(C) keptup (D) putoff难度：中 分值：1.013. You _________ me , because I didn’t say that.(A)must have misunderstood (B)must misunderstand(C)must be misunderstood (D)had to misunderstand难度：中 分值：1.014. Smoking is prohibited in the office(A) nogood(B) discouraged (C)encouraged (D) notallowed难度：中 分值：1.015. Rain does not ______ bring down the temperature(A)certainly (B) undoubtedly (C) necessarily (D)completely难度：中 分值：1.0 16. Television keeps us informed about______- events and the latest developments inscience and politics(A)current (B) fashionable (C) brand-new (D)previous难度：中 分值：1.017. The airplane arrived one hour behind______.(A)timetable (B) plan (C) date (D)schedule难度：中 分值：1.018. The football game will be played on ______(A) Junesix(B) sixJune (C) the sixthof June (D) the sixof June难度：中 分值：1.019. The judge suspected the truth of the evidence provided by the witness.(A)believed (B)doubted (C)gussed (D)realized难度：中 分值：1.020. Chichester _____ all kinds of hardships in his solo sailing round the world.(A)suffered (B) experienced (C) overcame (D)lasted难度：中 分值：1.021. It is the boy’s laziness that ________ his failure in the exams.(A)resulted from (B)resulted in (C)brought in (D)led into难度：中 分值：1.022. What she suggested has been_____ just because it is impracticable.(A) turndown(B) turnin (C) turnover (D) turnup难度：中 分值：1.023. Are you positive that the boy you saw in the hotel corridor(走廊) was Peter?(A) right (B)sure(C)wrong(D) doubtful难度：中分值：1.024. How we __________ a chance to visit your great country !(A) looked for(B) longed for(C) waited for(D) went for难度：中分值：1.025. I couldn’t understand why he pretended _________ in the bookstore.(A) not to see me(B) to see me not(C) not see me(D) to see not me难度：中分值：1.026. She proposes that we have a birthday party for our English teacher.(A) suggests (B) intends (C) demands (D) decides难度：中 分值：1.027. It was not a serious accident; the car needs only some______ repairs(A)major (B) secondary (C) minor (D)primary难度：中 分值：1.028. We need an extra copy of the book for the newcomer.(A) arare(B) anadditional (C) anunusual (D) anexcellent难度：中 分值：1.029. As long as you keep trying , you’ll certainly succeed.(A) If (B) As (C)Because(D)No matter how难度：中 分值：1.030. He failed in his ____ to give up the bad habit of cigarette smoking(A) attain (B) attempt (C) assent (D) tempt难度：中分值：1.031. Only guests of the hotel enjoy the ____ of using the private beach.(A) privilege (B) possibility (C) favour (D) advantage难度：中分值：1.032. Her heart was slightly ___ as a result of her long illness.(A) damaged (B) destroyed (C) demolished (D) spoiled难度：中分值：1.033. I suggest that you review these lessons before you take the final exam.(A) go across (B) go up (C) go over (D) go on难度：中分值：1.034. I received a _____ parcel yesterday and I am still wondering who may have sent it(A) sincere (B) dull (C) complicated (D) mysterious难度：中 分值：1.035. We moved to the front row______ we could hear and see better(A) soas(B) sothat(C)because (D) suchthat难度：中 分值：1.036. All her doubts vanished after she read the letter from Jimmy.(A)broke(B)decreased (C) disappeared (D)grew难度：中 分值：1.037. Bob’s doctor suggests _________ for a few days.(A)that he rest(B) hisresting(C)him to rest(D)that he is resting难度：中 分值：1.0 38. It was in that small room______ they worked hard and dreamed of better days to come.(A) what (B) in which (C) which (D) that难度：中分值：1.039. White teeth are a sharp ______ to black skin(A) content (B) contrast (C) contract (D) contact难度：中分值：1.040. Betty was nervous whenever she saw her history teacher.(A) tense(B) delighted(C) relaxed(D) disappionted。
英语考试单项选择经典题目
英语考试单项选择经典题目1. --- Can you tell me ________?--- He is a teacher.A. how is heB. which is heC. what does he doD. who he is【参考答案】D2. --- Are you free this Saturday evening?--- ____________. I have to attend a meeting.A. Yes, I amB. Yes, I doC. No, I'm notD. No, I can't【参考答案】C3. --- Could you please pass the salt?--- ____________. Here you are.A. Yes, sureB. I'm sorryC. No, thanksD. Of course【参考答案】D4. --- Excuse me, is this seat taken?--- No, it's not. ____________.A. Make yourself at homeB. Go aheadC. Not at allD. It doesn't matter【参考答案】B5. --- ____________?--- She is my sister.A. Who is thisB. Whose is thisC. Who is sheD. Whose is she【参考答案】C6. --- How was the movie last night?--- ____________. I really enjoyed it.A. It was boringB. It was terribleC. It was fantasticD. It was disappointing【参考答案】C7. --- What time shall we meet tomorrow?--- ________. How about 10 o'clock?A. It's up to youB. It's no problemC. It's on youD. It's your turn【参考答案】A8. --- The restaurant is closing. Shall we ask for the bill?--- ____________. I still want to have dessert.A. Not so quickB. Take it easyC. No problemD. What a pity【参考答案】A9. --- ________?--- She is a doctor.A. What does she doB. How is sheC. Who is sheD. Why is she【参考答案】A10. --- Could I borrow your pen?--- ____________. But please remember to return it.A. Of course notB. I would prefer not toC. I'm afraid notD. Sure, here you go【参考答案】D11. --- What do you think of the new MP3 player?--- Personally, ____________. It's user-friendly. A. I can't stand it B. I don't careC. I'm in love with itD. I can't bear it【参考答案】C12. --- ________?--- It's my mother's.A. Whose book is thisB. Whose book this isC. Who book is thisD. Who book this is【参考答案】A13. --- ____________?--- I have a headache.A. What's the matterB. What's wrong with youC. What's going onD. What happened【参考答案】A14. --- Shall we go to the concert tonight?--- I'd love to, ____________. But I have to work overtime.A. if you likeB. if you don't mindC. if you wantD. if you are willing【参考答案】B15. --- How much does this shirt cost?--- It is $30. ____________.A. It's not cheapB. It's a good priceC. It's worthwhileD. It's on sale【参考答案】A16. --- ________ in the park when I saw him for the first time.--- Really? You must be joking.A. Was youB. Were youC. Did youD. Do you【参考答案】B17. --- Have you heard from Lucy recently?--- Yes, I have. She ________ to Beijing for a business trip.A. has goneB. has beenC. had goneD. had been【参考答案】B18. --- I can't find my glasses. Have you seen them?--- ____________. Have you checked your bag?A. I'm not sureB. I can help youC. I think soD. I can't believe it【参考答案】C19. --- Could you please turn down the music? It's too loud.--- ____________. I'm sorry. I didn't realize it was bothering you.A. Sorry for thatB. I have no ideaC. It's none of your businessD. My apologies【参考答案】D20. --- Do you mind if I use your phone?--- ____________. Go ahead.A. You're welcomeB. Don't mention itC. It's up to youD. Please be my guest【参考答案】D以上是一些英语考试单项选择题的经典题目，希望能对您的学习有所帮助。
单-项选择题
第一章绪论一、单项选择题1、一种资产具备了（）等条件，才真正需要专业估价。
A、独一无二性和易受限制性B、独一无二性和难以变现性C、独一无二性和价值量较大D、难以变现性和价值量较大二、多项选择题1、房地产需要专业估价的理由有（）。
A、房地产具有独一无二性B、政府部门要求估价C、房地产的价值量较大D、估价人员要求估价2、房地产估价可在下列活动中发挥作用（）。
A、房地产出租B、房地产保险C、房地产继承D、房地产拍卖3、我国大陆的房地产估价发展迅速，突出表现在（）等方面。
A、确立房地产估价的法律地位B、实行房地产估价师执业资格考试制度C、制定“房地产估价规范”D、成立房地产估价师学会三、简答题1、房地产为什么需要估价？2、现实各项活动中有哪些方面需要进行房地产估价？3、房地产抵押贷款能否以交易价格作为抵押价值？为什么？第四章市场比较法一、单项选择题1、与市场比较法关系最为密切的房地产价格的形成原理是（）。
A、均衡原理B、预期原理C、竞争原理D、替代原理2、比准价格是一种（）。
A、市场价格B、理论价格C、评估价格D、公平价格3运用市场比较法评估房地产价格时，选择比较案例应尽可能使其在（）。
A、同一供需圈内B、相邻区域内C、同一行政区内D、同一城市内4、某住宅建筑面积与使用面积比例为1：0.7，已知建筑面积价格为3000元/平方米，则使用面积价格为（）元/平方米。
A、2100B、2333C、4286D、46665、有一宗交易实例使用面积2500平方英尺，成交总价16万美元，分二期付款：首期付50%，余款一年后支付。
若半年期利率为1.5%，1美元=8.28元人民币，1平方米建筑面积=0.75平方米使用面积，1平方米=10.764平方英尺，将其统一到每平方米建筑面积的人民币价格为（）。
A、7494元/㎡B、7250元/㎡C、4020元/㎡D、4215元/㎡6、有甲、乙两宗面积形状都相同的相邻地块各值50万元，若将两宗土地合并为一宗，合并后价值110万元，如果甲地块的使用权人购买乙地块的使用权，乙地块的使用权人的索价对交易双方都是公平合理的正常价格应为（）。
单项选择题(含答案)
单项选择题(有答案)一、单项选择题（共35小题，每小题2分，共70分）1、结合诗歌《木兰诗》，下列句子修辞手法依次判断正确的一项是（B）①不闻机杼声，惟闻女叹息。
②阿爷无大儿，木兰无长兄。
③东市买骏马，西市买鞍鞯，南市买辔头，北市买长鞭。
④旦辞爷娘去，暮宿黄河边。
正确答案：（B）A、比喻对偶反复夸张B、对偶对偶排比对偶C、借代反复排比对偶D、对偶反复对偶比喻2、对诗歌《逢入京使》的理解，不正确的是（D）正确答案：（D）A、这首诗表达了诗人远涉边塞的思乡怀亲之情。
B、“凭君传语报平安”表达了诗人挂念亲人而又无可寄托，担心亲人挂念自己的复杂心理。
C、展开联想与想象，诗歌描绘了离开长安日久，回头一望，只觉长路漫漫，尘烟蔽天．诗人又思念起家乡和亲人，不禁掩面抽泣，泪水很快就沾湿了双袖的情景。
D、这首诗语言朴素自然，仅仅运用了比喻的修辞手法，就将生活中充满的浓郁边塞生活气息，用朴素的语言真挚的表现出来。
3、诗歌《木兰诗》中多处使用修辞手法，使得文意表达生动形象，令人回味。
赏析诗歌，以下表达正确的是（C）正确答案：（C）A、木兰准备出征和奔赴战场，“东市买骏马……”四句排比，写木兰紧张地购买战马和乘马用具，表现出木兰对即将到来的从军生活的激动与向往；B、“旦辞爷娘去……”八句，未用任何修辞手法，却生动具体地描写了木兰行进的神速、军情的紧迫、心情的急切，使人感到紧张的战争氛围。
C、木兰十来年的征战生活，“万里赴戎机，关山度若飞”，夸张地描写了木兰身跨战马，万里迢迢，奔往战场，飞越一道道关口，一座座高山。
D、文末用对比作结，以双兔在一起奔跑，难辨雌雄的例子来做对比，对木兰女扮男装、代父从军十二年未被发现的奥秘加以巧妙的解答，妙趣横生而又令人回味。
4、对“但闻黄河流水鸣溅溅”“但闻燕山胡骑鸣啾啾”两句理解正确的一项是（C）正确答案：（C）A、写征程的遥远和军情的急迫。
B、写战争到来的悲凉气氛。
C、以宿营地空旷寂凉烘托木兰离家思亲的情怀。
英语单项选择(50题)测试题及答案 含解析
英语单项选择（50题）测试题及答案含解析一、选择题1．When you finish reading the book, you will have __ better understanding of __ life. A．a, the B．the, a C．/, the D．a, /2．It’s ________great surprise to find the poor little girl lives alone in _________countryside.A．a; the B．a; 不填C．不填; the D．不填；不填3．不定冠词的用法不定冠词有两个，a 和 an。
a用在辅音开头的单词前面；an用于以元音开头的单词前。
如：a book, an apple。
1）不定冠词用在但数可数名词前表示“某一个”。
如：There is a policeman at the door.门口有个警察。
2) 不定冠词用在单数可数名词之前，表示“任何，每个”。
如：A car must be insured.汽车一定要上保险。
A soldier must obey orders.军人必须服从命令。
3) 不定冠词用于头一次出现的单数名词之前。
如：There is a box in the room. The box is heavy.房间里有个箱子。
这个箱子很重。
4) 不定冠词和名词连用作表语或同位语，主要说明某个人或东西所属类别。
如：She is a teacher. 她是个老师。
We all thought him a suitable person for the job.我们都认为他是适合做这个项目的人。
5）定冠词用在价格、速度、比率等短语中。
如：six kilometers an hour 每小时60公里3 times a day 每天三次6) 不定冠词用在专有名词前。
如：He wants to buy a Kodak.他想买架柯达相机。
英语单项选择(50题)测试题含解析
英语单项选择（50题）测试题含解析一、选择题1．It's ______ great surprise when I heard ______ news about the accident.A．the; a B．a; theC．a; 不填 D．the; the2．---What _____ great fun it would be if we could celebrate his birthday!---Forget it! The teacher in _____ charge of our dorm won't be happy to see that.A．a; the B．/; the C．/; / D．a; /3．The Jurassic Park is _____ Steven Spielberg movie in which _____ hero fights bravely and protects his friends and family from dinosaurs．A．／；the B．a；theC．／；a D．the；a4．let’s go to ______ cinema , which will take your mind off the problem for ______ while. A．the ,the B．the, a C．a, the D．a, a 5．—Who’s ________ girl in red over there?—Kate, ________ excellent student in our class.A．the; a B．the; an C．/; an D．/; a二、选择题6．My parents have made ________ a habit to go out for a walk around Xuanwu Lake. A．this B．it C．that D．one7．The sheep are eating grass on the hill. How happy ________ look!A．it B．its C．they D．them 8．BFSU is not far from Peking University, so you can easily visit ________ in a day. A．both B．all C．either D．neither三、选择题9．If you’re good at English, you will have one more ________ when searching for jobs. A．method B．advantage C．interest D．interview 10．—The air is very fresh in our city. There is less _______ than before.—Yes. The government has taken action to protect the environment.A．wood B．pollution C．noise D．water四、选择题11．—Peter, have you heard of the song Let it go?—Yes, it sounds _________ and it's popular among young people.A．nice B．bad C．terrible D．strange五、选择题12．Wu Mengchao, known as the “father of Chinese hepatobiliary surgery” passed away________ the age of 99 on Saturday.A．on B．in C．at D．by13．The grassland, reaching out far away, looks rather beautiful _____ the blue and clean sky.A．against B．above C．through D．past六、选择题14．Children’s Day is on the way. Many shops have ________ huge posters with the word “SALE”.A．put on B．put in C．put away D．put up 15．Much to everyone’s surprise, Hi, Mom ________ to be a biggest hit.A．turns out B．puts out C．carries out D．breaks out 16．We are supposed to ________ smart phones and take more exercise instead.A．put up B．put away C．put on D．put out七、选择题17．—Must the children leave at six tomorrow morning?—No, they _______. They can have more time to get ready for the trip.A．can’t B．needn’t C．mustn’t D．may not八、选择题18．— ________ moving person Zhang Dingyu is! He devoted himself to treating and helping patients in Wuhan.—Yes, he won the award for Moving China last year.A．How a B．How C．What a D．What19．—________ interesting story!—________ excited you look! May I have a look at it?A．What an; What B．How; How C．What an; How D．How; What 20．________great fun it is to be with the humorous girl!A．What B．What a C．How D．How a九、选择题21．-__________do you sleep every day, Eric?-For about eight hours.A．How much B．How fast C．How often D．How long 22．— will the project of high-speed railway connecting Xuzhou to Lianyungang be completed?—In about two years.A．How long B．How far C．How soon D．How often23．— ________ will you finish your model spaceship, Tom?—In about two days. I’ll try my best to make it.A．How long B．How soon C．How often D．How far十、选择题24．— Daddy, when will we go out to fly a kite?— As soon as your homework _________.A．will finish B．will be finished C．is finished D．finishes 25．—I saw several boxes of books at the gate of our school just now.—They ________ to children in poor areas.A．were sent B．are sent C．will be sent D．were being sent 26．—My father works in Pukou . He spends much time driving home every day.—Don’t worry about that. It’ll be easier when the bridge ________.A．repairs B．will repair C．is repaired D．will be repaired十一、选择题27．—Hi, Daming. What are you up to?—I ________ a project about family history.A．do B．did C．am doing D．was doing 28．— Lena, I guess you were in a hurry this morning. You ________ your sweater inside out.—Oh my god, I’ll have it changed immediately.A．wore B．are wearing C．were wearing D．have worn 29．—Hey! You nearly hit the tree! What’s up?— Sorry, I ________ the trip to my hometown.A．think about B．am thinking about C．was thinking about D．thought about十二、选择题30．Going to the movies is good, ______ I really only like listening to music.A．and B．but C．so D．or31．- Thomas, spend less time on computer games; ______you will do worse in your studies.- All right.A．so B．but C．or D．and十三、选择题32．—Could you tell me ________?—I’m not sure.A．how many people have joined the club B．when is Thanksgiving DayC．which animal does he like best D．what time will the dolphin show start十四、选择题33．—Hurry up, we must be the first to interview the pop star.—Sure.____________.A．East or west, home is the best B．The early bird catches the wormC．Many hands make light work D．Don’t put all your eggs in one basket 34．—Amy, your pronunciation is so beautiful now. How do you make it?—Thanks. Just as the saying goes,”_____.”A．Each dog has its day B．Many hands make light work C．Practice makes perfect D．The grass is always greener on the other side 十五、选择题35．—Can you tell me how to get to the park?—________—Thank you all the same.A．Show me the map, please.B．Certainly. It’s opposite the museum.C．Sorry, I don’t know. I’m a stranger here.D．Sure. Turn right and go along Rock Road.十六、选择题36．I think middle school students should not get their hair _______.A．color B．colors C．colored D．coloring 37．There is something wrong with his TV. He wants to get it _______ this afternoon. A．repairing B．repaired C．to repair D．repair38．When you travel abroad, you can hardly avoid products made in China.A．to buy B．buy C．buying D．be bought 39．— Baby, would you mind ________ me cook the fish?—Of course not. I can’t wait ________ it!A．help; taste B．helping; taste C．help; to taste D．helping; to taste 40．There is someth ing wrong with my DVD player. I’ll have it ________.A．fixing B．to fix C．fixes D．fixed41．I think that AI(人工智能) ________ in many fields will ________ to help us solve many problems in the future.A．used；be used B．is used；be used C．used；use十七、选择题42．—OK, what do you want to know?—I’m unsure ________.A．which is the way to the Palace Museum B．how many colors are there in a rainbow C．that the couple has been married for 3 years D．how long I can borrow the story books 43．— Where is your son Jimmy living now?— He________the city of Yangzhou, China for two years.A．has come to B．has been to C．has gone to D．has been in十八、选择题44．The drama, “The Empress of China" that was pulled off the air for technical reasons now back on TV．A．is B．are C．has D．have45．The teacher told us that light ________ faster than sound.A．travelled B．has travelledC．travels D．was travelling46．—The moon ________ its first female astronaut by the year 2024.—Wow, this will truly be a remarkable moment in history.A．has welcomed B．is welcomed C．welcomed D．will welcome十九、选择题47．The happiest of people don’t necessarily have the best of everything; they just make the most of everything ________ comes along their way.A．which B．who C．when D．that二十、选择题48．—When will the railway that connects the two cities open?— next year. Only two thirds been built.A．Until; has B．Until; haveC．Not until; has D．Not until; have49．All students should keep taking exercise every day _______ they are busy studying so many subjects.A．until B．because C．though D．unless 50．Benny, monitor of our class, is such ________ honest boy that we all trust him.A．a B．an C．the D．/【参考答案】***试卷处理标记，请不要删除一、选择题1．B解析：B【解析】【详解】考查冠词。
中考 单项选择 练习题(含答案)
C. came
D. will come
【解析】as soon as引导的条件状语从句用一般现在时，主
句用将来时,故选B。
6. 推算法
有些选择题涉及简单的数学常识，所给的答案从语法上看
是对的，要选出这种题的正确答案需要进行推算。
【范例】This is Mr. White’s ____ visit to Beijing. He has
B. the ship of the desert
C. a useless animal
D. the most beautiful animal
【解析】很多人都知道，因为骆驼非常耐渴，所以人们在 沙漠地区常用骆驼代步，骆驼因此被称“沙漠之舟”，故 正确答案为B项。
8. 关键词法 许多题目都有这样一些词，它们对于快速而准确的判定答 案起着至关重要的作用，我们称这些词为关键词，找到句 中的关键词也就找到了解题的突破口。 【范例】I saw Kevin in the supermarket this morning. —No, it _____ him. He moved to Canada last week. A. can be B. must be C. can’t be D. mustn’t be 【解析】由本题的关键点“He moved to Canada last week.” 可知在超市见到的那个人一定不是凯文，故答案为C项。
—Fifty. A. How much B. How many C. How soon D. How far 【解析】选B。 提问可数名词的数量应该用how many。
10. —Excuse me, sir. Is the swimming pool open all day?
单项选择100题(基础篇)(学生版)
人教版新目标七年级上册期末冲刺复习专项分类突破卷单项选择100题（一）1．—_________ you Mr. Wang?—Yes, my name ________ Wang Ming.A．Are, am B．Is, areC．Is, am D．Are, is2．My English teacher’s name is Jonny White. So we call him ________.A．Miss Jonny B．Mr. Jonny C．Mr. White D．Sir Jonny 3．—What’s the girl’s name?—________ name is Mary.A．His B．My C．Her D．Your 4．Mom，________my good friends, Mike and Bob.A．she is B．he is C．this is D．these are 5．Hello! My name is Zhang Lingyun. _________ is my family name.A．Zhang B．Ling C．Yun D．Lingyun 6．—What is that?—It is a photo _________ her family.A．in B．of C．to D．on 7．Anna is not my sister. is my cousin.A．He B．His C．She D．Her 8．Jenny is my dad’s sister. She is my ________.A．uncle B．aunt C．grandmother D．cousin 9．Here’s a photo of my ________ and in it you can see my parents and sister. A．family B．school C．friend D．phone 10．This ____ my brother and those ____ my friends.A．is, are B．are, isC．are, are D．is, is11．Helen is my aunt. Her son is my ________.A．brother B．son C．uncle D．cousin 12．—_________ is the boy?—He is my brother.A．How B．Who C．Where D．What 13．—Bob, ________ is my brother Frank.—Nice to meet you, Frank.A．it B．these C．this D．those 14．I have _____________uncle and _____________aunt.A．a, a B．an, an C．a, an D．an, a 15．一Tom, ________ is Sally. ________ is my good friend.一Nice to meet you, Sally.A．he; This B．this; She C．it; She D．she; This 16．—________?—She is my sister.A．Who’s she B．What’s thisC．What’s her name D．How’s she17．Look at (看) the ________！We can see a girl and a dog in it.A．picture B．jacketC．phone D．friend18．—Thank you helping me.—You’re welcome.A．with B．of C．on D．for 19．—How old is Mike?— _________.A．He’s a boy B．H e’s ten C．He’s my father D．He is fine 20．Kate has two cousins. _______ are Sally and Frank.A．This B．That C．They D．You 21．—My English isn’t good. —You can ask the teacher ________ help.A．in B．for C．of D．at 22．Please call us _____2388977.A．at B．on C．in D．with 23．—________ this jacket, Alan?—It’s good, I like it.A．What about B．What’s C．Who’s D．What color 24．—Is this pencil box ________？—Yes，it is. And the notebook is ________，too.A．Gina；her B．Gina's；herC．Gina；hers D．Gina's；hers25．That’s a set ________ keys.A．in B．at C．of D．for26．—Are those her pencils?—________. They’re mine.A．Yes, it is B．No, it isn’t C．Yes, they are D．No, they aren’t 27．—Your watch is very nice.—_________________A．No, it isn't.B．Yes.C．No. D．Thank you.28．I can’t find my ticket. I think I have lost _________.A．it B．one C．this D．them29．—Is this his book?—________. It’s her book.A．Yes, I am B．No, it isn’t C．Yes, it is D．No, he isn’t30．We must ________ the two boys for their help.A．to thank B．thanks C．thank D．thanking 31．Jim lost his ID card and he must _________it.A．lose B．find C．see D．say32．Look! I can see two windows ________ the wall.A．on B．in C．to D．for33．This is ____________ bedroom. They both like it very much.A．Mary and Helen B．Mary's and Helen's C．Mary's and Helen D．Mary and Helen's 34．Jenny isn't tidy.In her room, the books are ________.A．everywhere B．somewhere C．here D．there 35．—my ruler?—It's under the chair.A．Where B．Where's C．Where're D．Where are 36．Anna isn’t ________. Look! Her CDs are everywhere.A．kind B．tidy C．fine D．welcome 37．My sister ________ I are tidy, ________ my brother isn’t.A．and；and B．but；but C．and；but D．but；and 38．—Where is the baseball ?—It’s ________ the table ________ the floor.A．on; under B．on; on C．under; under D．under; on 39．________ my toys. They are new.A．Here are B．Here is C．This is D．That is 40．— ________, Jimmy! You must go to school!—OK, Mum.A．Come on B．Excuse me C．Have a nice day 41．Let’s ________ computer games.A．play B．plays C．to play D．playing 42．—Where’s the map?—I think it’s in your __________ room.A．grandparent B．grandparents C．grandparents’D．grandparents’s43．—Is your notebook in the schoolbag?—________. It’s in the bookcase.A．No, it isn’t B．Yes, it is C．No, they aren’t D．Yes, they are 44．Hello, mum! I need my English book. Can you ________ it to school?A．need B．bring C．take D．have 45．— ________ they have any sports collections?—Yes, they ________.A．Do, do B．Are, are C．Can, do D．Do, can 46．Let’s play ______ basketball after school.A．a B．an C．the D．\47．He ________ soccer on Sunday afternoon. He ________ TV.A．doesn’t play; watches B．don’t play; watchesC．doesn’t play; watch D．don’t play; watch48．----Le’s play computer games.----_____________.A．That sounds good. B．No, I don’t.C．Well, let’s play soccer.D．No, I don’t have a ball.49．I ________ a soccer ball, and Gina ________ a volleyball.A．have; have B．has; has C．have; has D．has; have 50．I’ll go to Shanghai ________ my paren ts.A．and B．to C．with D．of51．My brother and I are in ________ class.A．one B．same C．a D．the same 52．He is a ________ player. He plays ________.A．good; good B．well; well C．good; well D．well; good 53．I have _______ tennis ball．Let’s play ________ tennis．A．the，the B．an，/ C．/，the D．a，/54．一Do you like basketball, Tom?—No，I don’t. It’s________ for me.A．difficult B．interesting C．easy D．fun55．He has a good ________ habit because he doesn’t want ________ fat.A．eat; to be B．eating; be C．eating; to be D．eat; be 56．Linda ________ her friend, Gina, about her favorite food.A．helps B．thinks C．asks D．wants 57．—________ your cousin like milk?—Yes, he likes ________ very much.A．Does; it B．Do; it C．Does; them D．Is; them 58．Eating vegetables maybe help you keep _______.A．health B．healthy C．healthily 59．—Eating ________ food is good for our ________.—You’re right.A．healthy; health B．health; healthyC．healthy; healthy D．healthily; healthy60．Do you like French fries and fish ________ dinner?A．in B．of C．about D．for61．We want .A．two cup of oranges B．two cups of orangesC．two cups of orange D．two cup of orange62．Tom ________ eggs, milk, fruit and vegetables every day, ________ he is very healthy. A．have；so B．has；so C．have；but D．has；but 63．—________ lemons do you want?—Two, please. And ________ are they?—They’re 7 yuan.A．How much; how much B．How many; how manyC．How many; how much D．How much; how many64．It’s only 5 yuan! You can buy it ________ a good price.A．at B．with C．in D．on65．Do you need shoes ________ sports?A．for B．at C．in D．on 66．Look!These red shorts are ____ sale ___ only 8 dollars.A．on; at B．on; forC．at; for D．for;on67．We have sweaters ________ all colors ________ ￥50 each.A．in; at B．at; in C．in; for D．at; for 68．— Can I help you?— ______. I need a sweater.A．Yes, I do B．Thank you C．Yes, please D．Happy birthday 69．The pants_______nice. I'll take__________.A．look: them B．looks: it C．look; it D．looks: thern 70．Mr.Green doesn’t like his car now.He wants to ________ it.A．buy B．sell C．take D．get71．My shoes ________ red. This pair of shoes ________ not mine.A．are; is B．are; are C．is; are72．I want to buy a shirt _______ my father.A．to B．on C．for D．in 73．Susan has ________ classes in the morning. The ________ one is art.A．five；fifth B．fifth；fifthC．five；five D．fifth；five74．He is ________ student to come to school in the morning.A．the first B．first C．two D．an75．Next week is Linda's birthday. We want to ________ a birthday party for her.A．have B．buy C．play D．take76．We have a geography lesson ________ three o'clock ________ Thursday afternoon. A．at; in B．in; in C．on; on D．at; on77．________ is between October and December.A．November B．August C．September D．June 78．—________ is your Art Festival?—It’s ________ May 16th.A．What；on B．What；in C．When；on D．When；in 79．-Happy birthday to you, Gina.- .A．Thank you B．All rightC．That' s all right. D．You're welcome80．________ is the fourth month of a year.A．January B．February C．March D．April81．Our school has an art festival ________ November 30th.A．at B．on C．in D．for82．—is your sister?—She is eight.A．How old B．How C．How much D．What 83．—When is your cousin’s birthday?—________ on June 2nd.A．You’re B．She’s C．We’re D．It’s 84．—What’s the ________ today? —It’s October fi fteenth.—What ________ is it today? —It’s Sunday.A．date; day B．day; date C．date; date D．day; day 85．—When is the volleyball game?—________.A．It’s on August 10th B．It’s in August 11thC．It’s at August 12th D．It’s of August 12th86．October comes before __________ and after __________.A．September; November B．November; September C．December; November D．September; August87．My brother’s birthday is on May ________.A．the nineth B．nine C．the ninth D．nineteen 88．— ________ is the book sale?—It’s next week.A．What B．Who C．When89．My father says he has no time to_________ newspapers in his office.A．look B．see C．read D．watch90．I don't like math ______ it's difficult for me.A．because B．but C．in D．and 91．Jim is ten.I'm ten，too.We are the same ______.A．day B．age C．month D．birthday 92．— ________ does he like Miss Sun?— Because her lessons are very interesting.A．What B．Who C．How D．Why93．－________ do you like science?－________it’s interesting.A．Why; So B．What; Because C．Why; Because D．How; Because94．－_______ do you like best?－I like math best.A．Which subject B．What food C．What color D．Which sport 95．—Did you finish ________ the kite?—Yes. I flew it with my classmate this morning.A．making B．make C．makes D．to make 96．-Do you like English? -Yes, it’s .A．boring B．not interesting C．fun D．bad 97．—Does the yellow T-shirt look nice _____me? —Yes . And you look so smart ___yellow . A．on ;in B．on ;on C．in ;on D．in ;in98．The socks are so cheap.I'll____them.A．bring B．like C．take D．eat 99．—What's the ___________of this T-shirt?—50 yuan.A．price B．number C．saleD．question100．—do you like for breakfast?—Two eggs and some milk.A．Where B．How C．What D．What’s。
单项选择题(20题)
单项选择题（20题）1.尾矿堆积坝上升速率（）设计堆积上升速率是重大事故隐患。
[单选题] *A、大于；(正确答案)B、小于；C、等于2.浸润线埋深（）控制浸润线埋深是重大事故隐患。
[单选题] *A、大于；B、小于；(正确答案)C、等于3.经验算，坝体抗滑稳定最小安全系数小于国家标准规定值的（）倍是重大事故隐患。
[单选题] *A、0.85；B、0.90 ；C、0.95 ；D、0.98(正确答案)4.用以贮存独立选矿厂进行矿石选别后排出尾矿的场所，未按（）实施安全管理的是重大事故隐患。
[单选题] *A、临时堆场；B、隐患点；C、尾矿库；(正确答案)D、排土场5. 坝体的平均外坡比或者堆积子坝的外坡比（）设计坡比是重大事故隐患。
[单选题] *A、大于；(正确答案)B、小于；C、等于6.尾矿库重大隐患是指（）。
[单选题] *A、尾矿库存在的所有隐患B、尾矿库可能导致的重大事故隐患(正确答案)C、尾矿库可能导致的轻微事故隐患D、尾矿库可能导致的环境污染隐患7.多种矿山性质不同的尾砂混合排放时，必须按（）进行排放。
[单选题] *A、设计内容；(正确答案)B、申报内容；C、预期要求8.“外坡比”指的是尾矿坝的垂直高度与水平宽度的比值。
坝体的平均外坡比是对尾矿堆积坝坝体外坡整体坡度的评价指标，堆积子坝的外坡比是对（）尾矿筑坝法子坝外坡坡度的评价指标。
[单选题] *A、上游式；(正确答案)B、中游式；C、下游式9. 《尾矿库安全规程》（GB39496-2020）第6.1.9条规定：采用尾矿堆坝的尾矿库，应在运行期对尾矿坝做全面的（），以验证最终坝体的稳定性和确定后期的处理措施。
[单选题] *A、安全性复核；(正确答案)B、周期性检查；C、定向性检查；D、不定期检查10. 《尾矿库安全规程》（GB39496-2020）第5.3.15条规定：尾矿坝应满足渗流控制的要求，尾矿坝的渗流控制措施应确保浸润线（）控制浸润线。
单项选择100题
单项选择100题1. After he gave a report about the school, Mr White____ the visitors around it.A. went on to showB. went on showingC. went on with showingD. kept on showing2. -- Tom works hard at English.?-- _____, and _____.A. So does he; so you doB. So you do; so is heC. So he will; sodo you D. So he does; so do you3. When you write to him, please _____ him.A. give my loves toB. give my regard toC. remember me toD.give my wishes for4. We have done things we ought not to have done and_____ undone things we ought to have done.A. leftB. leaveC. will leaveD. leaving5. People are puzzled _____ they read the book.A. the first timeB. at the first timeC. for the first timeD. at first6. In some countries,_____ are called "public schools" are notowned by the state.A. thatB. whichC. asD. what7. -- The boy is tall enough _____ his age. --Yes, I was much_____ when I was his age.A. to; shorterB. at; tallerC. at; shorterD. for; shorter8. --Who are you waiting for? -- _____ the man wounded in theleft leg.A. The doctor will operate onB. Tie nurse to be looked afterC. The doctor to operate onD. His brother got9. --How did you _____ the movie last night? --Oh, both interesting and instructive.A. findB. considerC. thinkD. feel10. With his son _____, the old man felt unhappy.A. to disappointB. to be disappointedC. disappointingD. being disappointed11. The food tastes _____ and sells _____.A. well; wellB.good; goodC. good; wellD.well; good12. The sun was shining brightly, _____ everything there _____more beautiful.A. making; lookB. to make; lookedC. and made; lookingD. and making; be looked13. It' s too late to go out now. _____, it's starting to rain.A. BesidesB. MeanwhileC. HoweverD. Anyhow14. Everybody in the little town knew my first teacher, so we hadno ____ finding his home.A. difficulties inB. difficulty withC. difficultyD. difficulty to15. I can't understand it, will you please _____ once more?A. explain that wordB. repeat that wordC. explain us that wordD. explain that word for us16. --How often do you go to the library?--______.A. In two daysB. Every few daysC. Each third dayD. Every afew days17. We are just _____ calling you up _____ you come in.A. about; whenB. on the point of; whileC. on the point of; whenD. on the point of; as18. --They all agree _____ George. Has the project been passed?--Who _____ George can make the final decision?A. except; expectB. except; besidesC. but; butD. besides; but19. I come to tell you Jack _____ for London next month.A. is leavingB. is about to leaveC. will leaveD. would leave20. You can say "He went there _____, not _____."A. on the car; by carB.on foot; in his carC. by foot; by carD.inhis car; by his foot21. Jack is a good friend _____, he often comes to our home fora visit.A. of my fatherB. of my father'sC. for my fatherD. with myfather22. What way are you thinking of _____ rid of the flies?A. to getB. gettingC. being gotD. to be getting23. We must do something to _____ factories _____waste water into the river before it is cleaned.A. stop; pouring .B. prevent; to pourC. keep; pouringD. stop;to pour24. "_____ of them are not here." means "_____ of them are not here."A. All; SomeB. Both; EveryC. Both; NeitherD. All; Both25. --How did you do in the test?--Not so well. I _____ much better but I misread the directionsfor Part D.A. could doB. could have doneC. must have doneD. should do26. Mary cares about clothes too much, and she _____ too much money _____ clothes.A. spend; inB.cost; atC. pays; toD. spends; on27. Our kind teacher wanted to teach us _____ he knew athis lesson.A. thatB. all whatC. that allD. everything which28. They started early that morning in order that they_____ there before noon.A. would getB. gotC. must getD. might get29. Is this research center _____ the foreign guests visited last week?A. thatB. whichC. whereD. the one30.--What is the model plane look like? --Well, the wings of the plane are _____ of its body.A. more than the length twiceB. twice more than the lengthC. more than twice the lengthD. more twice than the length31. The enemy troop suddenly took the small village by surprise _____ a rainy morning.A. onB. atC. inD. during32. This is the school _____ they visited last year and is the one _____ my father once worked.A. that; whereB. where; thatC. where; whereD. that; that33. The college entrance examination is coming, the students are _____ it.A. preparingB. prepared forC. preparedD. preparing for34. The task was very hard, so _____ were needed.A. ten more menB. ten men moreC. more ten menD. men more ten35. He wanted to read more, so he asked his friend if there was _____ to read.A. something easy enoughB. something enough easyC. enough easy somethingD. easy enough something36. The room is very large and only little room _____ by the new piano.A. are taken upB. takes upC. is taken upD. is taking up37. What _____ time it is to listen to a speech having nothing todo with you!A. wasteB. wastesC. a waste ofD. a waste for38. _____ your help, we have _____.A. Thanks to, finishedB. Thanks to, endedC. Thanks for, finishedD. Thanks for, completed39. When and where to build the new factory _____ yet.A. is not decidedB. are not decidedC. has not decidedD. havenot decided40. It is necessary ___ me ___my studies before a new term.A. for, to make a plan forB. of, making a plan forC. for, to make a plan ofD. of, making a plan of41. He _____ the club and _____ its activities.A. took part in; joinedB. joined; took part inC. joined; took a part inD. took part in; took part in42. The noble man prefers ___money to him ___sorry to him.A. giving; to sayingB. giving; to sayC. give; to sayD. to give; to saying43. To gain honor for our country, we will try our best_____ the game.A. competing inB. competing againstC. to compete withD. to compete in44. Tom was so angry with Bob that he hit _____.A. Bob in the headB. Bob's headC. Bob on the headD. onBob's head45. _____ at the news that I didn't know what to say to comforther.A. So sad she lookedB. So sad did she lookC. So sadly shelooked D. So sadly did she look46. Only a fool enjoys _____ in public.A. making fun ofB. to make fun ofC. being made fan ofD. to be made fan of47. Our English teacher _____ by the teachers and students.A. is good thought ofB. is thought high ofC. is sung highly praise forD. is spoken highly of48. I like ______ of the two stories, for this story is _____ than that one.A. both; not more interestingB. neither; no more interestingC. neither; not more interestingD. either; no more interesting49. You'd better make a mark _____ you have any questions.A. at whichB. at whereC. the placeD. where50. The stubborn boy didn't _____ so that he missed the chance.A. take adviceB. follow an adviceC. give some adviceD. ask for advice51. Old as the car is, _____ it works quite well.A. butB. yetC. soD. however52. They were _____ inventors than pure scientists.A. moreB. lessC. manyD. worse53. The teachers are doing what they _____ their stuaits.A. can to teachB. can teachC. can teachingD. can to teaching54. Liaocheng, Shandong Pro. is a beautiful city, ____11 pay a three-day visit.A. whichB. whereC. to whichD. in which55. Don't have your children _____ for hours reading books in_____ dark a room.A. sitting; soB. sit; suchC. to be sitting; soD. to sit; such56. I want to know _____.A. what the matter isB. what matter it isC. what's the matterD. the matter is what57. After so long a walk, he was too _____ further.A. tired for walkB. tire to walkC. tiring to goD. tired to go58. Why not trust and use David? He is still as strong as____ inthe team.A. somebody elseB. everybody elseC. anybody elseD. nobodyelse59. After the accident, she had _____ all over.A. painsB. painC. acheD. aches60. I forget where I read the article, or I _____ it to you now.A. will showB. would showC. am going to showD. am showing61. ____for the doctor's careful treatment, he____till last year.A. If it is not; can't liveB. Were it not; couldn't liveC. Had it not been; couldn't have livedD. If they were not ; couldn't live62. They stayed up until midnight _____ the old year out and thenew year in.A. and sawB. to seeC. seeingD. for seeing63. George spent _____ studying.A. the whole dayB. all during the dayC. altogether a dayD.entirely a day64. You may _____ find it hard to get along well with them.A. certainlyB. likelyC. possiblyD. probably65. The house that _____ by the fire belongs toA. was destroyed, mineB. destroyed, mineC. was destroyed,me D. destroyed, me66. ---____ will the meeting _____?---In about 20 minutes.A. How long, lastB. When, lastC. How often, finishD. How soon, end67. While _____ in the room, we were all very excited.A. waitedB. waitingC. to waitD. wait68. _____ you _____ to go to watch the football match with me?A. Would; likeB. Would; ratherC. Do; feel likeD. Do; would like69. She asked _____ we were getting on well with our work.A. howB. ifC.whatD. that70. I'm wondering_____ he expects will win the gold medal inMen's Single.A. whomB. whichC. whoD. what71. Don't think of the exam. _____, it has been passed quite afew days.A. In allB. Not at allC. After allD. At all72. She _____ a man _____ a lot of money.A. was married; withB. married; withC. marrietl; toD. was married; to73. During the next ten years we both worked day and night to_____ the money we had borrowed.A. pay offB. pay forC. pay toD. pay back74. --Where do you think _____ he _____ the computer?---Sorry, I have no idea.A. /; boughtB. has; boughtC. did; buyD. had; bought75. We have been _____ by all our friends since we settled in thenew house.A. called onB. called atC. called intoD. called for76. I _____ her voice at once on the phone, though we hadn'tseen each other for ten years.A. heardB. knewC. realizedD. recognized77. But she had to ___ the company and ____a man in order toget a job.A. lie to; pretended to beB. lie; pretended to beC. lie to; pretended beingD. lie; pretended as78. The man went into the room, _____ rather strange.A. to lookB. lookingC. lookedD. and looking79. The driver drove __ hit a big tree and the car came to a stop.A. too carelessly toB. carelessly enough toC. so carelessly thathe D. so careless that he80. When he saw all his books _____ here and there on the floor,he knew that something terrible _____.A. lying; must have happenedB. lie; must happenC. lay; might have happenedD. had lain; could have happen81. ____Mr Brown's anger, it was his own son who didn't agree____him.A. To; withB. Because of; toC. With; ofD. For; on82. But later people developed a way of printing, _____rocks.A. usedB. usingC. and useD. uses83. The problem was that it is ____valuable ___everyday use.A. too; toB. too; forC. too; ofD. so; that84. ---Where is Mother---She is in the kitchen. She _____the housework all morning.A. is doingB. was doingC. has doneD. has been doing85. What a strange man! He loves his wife, but _____ he oftenbeats her.A. at a timeB. at one timeC. at timesD. at the same time86. The books, _____ the dictionaries, must be put back wherethey _____.A. included; wereB. to include; areC. including; wereD. including; are87. Paper _____ the fibres of plants for many years.A. has been made fromB. have been made out ofC. has madeup of D. have been made into88. Before the game started Alien's friends believed he was ___but he didn't feel ___. Then after the first ten minutes, he beganto take heart.A. sure to win; sure to successB. sure of success; sure of itC. sure to win; sure about thatD. sure about winning; sure to win89. His father looks young, but _____ fact he is _____.A. in; in the fortiesB. in; in his fortiesC. in the; in the fortiesD.in; in his forty90. It's quite strange that the man sleeps with his mouth____ andhis eyes _____.A. closed; openB. closed; openedC. closing; openD. closing; opening91. If you have a problem _____ your composition, you had better ask your teacher ______.A. in; on some adviceB. for; for some advicesC. on; some adviceD. with; for some advice92. There _____ a lot of coal mines in the south, but many ofthem have been closed or are _____ be closed.A. use to having; about toB. used to be; toC. use to having;going to D. used to be; supposed to93. The weather in Britain is ____too cold in winter___too hot in summer.A. either; orB. both; andC. neither; norD. or; and94. Forgive him, please. I don't think he broke your mirror____.A. with careB. on purposeC. for funD. with aim95. He advised the fanners to choose the best seed-heads,____that had the best colour.A. the oneB. the onesC. oneD. ones96. Although he is considered a great writer, _____.A. his works is not widely readB. but his works are not widelyreadC. however his works are not widely readD. yet his works are not widely read97. --_____ of the population of the city _____workers? --About60 percent.A. What; isB. What; areC. How much; isD. How much; are98. I was advised to arrange for insurance _____ I needed medical treatment.A. althoughB. incaseC. so thatD. if only99.---What can I do for you？---Well，I'm afraid the box is heavy for you，but thank you all the same．A．so B．much C．very D．too100.--Peter is very clever and he studies hard as well．---No ______be always wins first in the examinations.A．doubt B．question C．wonder D．problem1--5 ADCAA 6--10 DDCAC 11--15 CAACA 16--20 BCCAB21-25 BAAAB 26-30 DBDDC 31--35 AADAA 36-40 CCAAA 41-45 BADCB 46-50 CDBDA 51-55 BAACA 56-60 CDCAB 61-65 CBACC 66-70 DBABC 71-75 CBDAA 76-80 DABCA 81-85 ABBDD 86-90 CACBA 91-95 DBCBB 96-100 DDBDC。
一单项选择题(共30小题,每小题1分,共30分)
一、单项选择题（共30小题，每小题1分，共30 分）1. 下列属于半自主细胞器的是。
A．内质网B．线粒体C．高尔基复合体D．溶酶体2. 下列氨基酸含有羟基的是。
A．甘氨酸B．天冬氨酸C．亮氨酸D．苏氨酸3. 下列属于原核DNA结合蛋白的是。
A．H2A B．H2B C．H1 D．Hu4. 细胞中含量最低的RNA是。
A．mRNA B．tRNA C．rRNA D．以上均不对5. 以下关于原核DNA聚合酶Ⅰ描述不正确的是。
A．该聚合酶含有2个结构域B．该聚合酶具有3′至5′外切酶活性C．该聚合酶不具有5′至3′外切酶活性D．该聚合酶具有5′至3′聚合酶活性6. 原核DNA复制中的引物酶是。
A．DnaG蛋白B．DnaB蛋白C．Tus蛋白D．DnaA蛋白7. 下列关于DNA转录描述错误的是。
A．DNA转录需要底物NTPsB．DNA转录方向是5′至3′C．DNA转录中非模板链又称无意义链D．第一个被转录的碱基通常是嘌呤8. 下列不属于操纵子模型的DNA作用元件是。
A．启动子B．增强子C．操纵基因D．结构基因9. 下列真核转录因子DNA结合域不属于碱性亮氨酸拉链结构的是。
A．Jun-Jun B．Jun-Fos C．C/EBP D．Fos-Fos10. 真核DNA复制过程中最主要复制酶是。
A．DNA聚合酶δB．DNA聚合酶βC．DNA聚合酶γD．DNA聚合酶α11. 核苷酸组成中不含有的成分是。
A．磷酸B．脱氧核糖C．含氮碱基D．含硫碱基12. 下列有关DNA变性描述错误的是。
A．DNA变性后黏度下降B．DNA变性后紫外吸收值增高C．DNA变性后浮力密度上升D．DNA变性破坏了一级结构13. 下列蛋白表达水平的变化检测方法采用。
A．Norhtern印迹B．Southern印迹C．Western印迹D．原位杂交14. 下列内切酶酶切DNA后形成平整末端的是。
A．EcoRI B．BamHI C．EcoRV D．PstI15. 在蛋白翻译中，第一个被翻译的氨基酸是。