2018中考单项选择题120道
姓名________________ 得分_________________
单项选择(本大题共100题，每小题1分，共100分)
（）1. — He climbed so fast that he reached_____ floor in two minutes.
A. nine
B. the nine
C. the ninth
D. ninth
（）2. ______ your umbrella, or you’ll catch a cold on such a rainy day.
A. Take
B. To take
C. Taking
D. Taken
（）3.You can improve your English_____ reading more.
A. in
B. with
C. by
D. of
（）4. Do you like listening to country music or rock music?
________. It brings me pleasure.
A. Yes, I do
B. No, I don’t
C. I like music
D. Country music
（）5. It’s______ today. I think it’s going to_________.
A. cloud: rain
B. cloudy: raining
C. cloudy: rain
D. cloudy: rainy （）6. After the final exam, we will feel____ and we’ll have a________ summer holiday.
A.relaxing: relaxing
B. relaxing: relaxed
C. relaxed: relaxed
D. relaxed: relaxing
（）7. Ken looks _____ his father and he ______ taking photos with his father.
A. like: likes
B. like: like
C. likes: likes
D. likes: like
（）8. She studies hard all the time; she never gives up .
A. study
B. to study
C. studying
D. to studying
（）9. This morning she had milk and apples.
A. too much；too much
B. too many；too many
C. too much；too many
D. too many；too much
（）10. There are many trees on side of the road.
A. all
B. both
C. every
D. each
（）11. — What are they doing now?
— They are busy articles in the room.
A. to write
B. write
C. writing
D. to writing
（）12. Jan is in that book.
A. interesting；interesting
B. interested；interested
C. interested；interesting
D. interesting；interested
（）13. She short, but now she is tall.
A. used to be
B. is used to be
C. is used to being
D. used to being
（）14. His words made possible for me in the city.
A. it；to work
B. it；to working
C. that；to work
D. that；to working
（）15. Tom looks sad. Let’s cheer him .
A. up
B. in
C. out
D. at
第1页
（）16. They decided the kids to read.
A. to help；learn
B. to help；learning
C. help；to learn
D. help；learning
（）17. Could you please late for class next time?
A. don’t arrive
B. no arrive
C. not arrive
D. not to arrive （）18. —Look! She’s skiing so fast!
— Hard to her legs were once broken.
A. know
B. realize
C. imagine
D. find
（）19. She asks me if it tomorrow. If it tomorrow, she will go camping with me.
A. will rain；won’t rain
B. will rain；doesn’t rain
C. rains；doesn’t rain
D. rains；won’t rain
（）20. — Would you like juice?
— Yes, .
A. some；thanks
B. some；please
C. any；thanks
D. any；please ( ) 21. We don’t know if our friend_____. if he______, we’ll let you know.
https://www.360docs.net/doc/c59326846.html,es: comes.
B. comes: will come
C. will come: comes
（）22.Next month we’re going somewhere interesting as soon as the holiday___
A.will begin
B. has begin
C. begins
D. is beginning
（）23.Mum, don’t forget to remind me_____ the umbrella. It’s raining heavily outside.
A. bout
B. of
C. by
D. on
（）24.I succeed_____ the math exam this term, though I failed several times.
A. pass
B. in passing
C. passed D, to pass
（）25.This work needs close teamwork.________ will be achieved unless we work well together.
A. Nothing
B. Anything
C. Something
D. Everything
（）26.Did you know that the Earth is home to _______ animals?
A. million
B. millions
C. millions of
D. million of
（）27.Lina is one of _______ students in our class.
A. good
B. better
C. best
D. the best
（）28.----Oil is everywhere in this store, so you ______ know smoking is not allowed here.
-----I’m sorry.
A. can
B. may
C. must
D. shall
（）29.Technology helps us a lot, _______ we shouldn’t allow it to control our lives.
A. but
B. because
C. unless
D. even though
（）30.What can I do for you, Sir?
_______________.
A. Nothing
B. I don’t know
C. No, you can’t
D. I’d like a cup of tea
第2页
（）31.If you see any litter on the school playground , you ‘d better_____
A. give it away
B. pick it up
C. turn it off
D. put it on
（）32.Excuse me, but I don’t think you can smoke here.
Really sorry, I _______ this is a non-smoking room.
A.don’t know
B. won’t know
C. didn’t know
D. hasn’t known
（）33.Teenagers ________ to follow the traffic rules.
A. can teach
B. must teach
C. should be taught
D. might be taught
（）34.No one can be sure _________________ in a thousand years.
A. what will man look like
B. man will look like what
C. what man will look like
D. what will look like man
（）35.Everybody except Mike and Linda ______ there when the meeting began.
A. is
B. are
C. was
D. were
（）36.Your proposal is worth _________.
A. consider
B. considers
C. to consider
D. considering
（）37.My grandma stays at home ______ , so sometimes she feels_______
A. alone: alone
B. alone: lonely
C. lonely: lonely
D. lonely: alone
（）38.Madam, do you want anything else?
No, I need______
A. anything more
B. nothing more
C. something more
D. everything more
（）39. I bought _____________ for my mother on Mother’s Day this year.
A. special anything
B. anything special
C. special something
D. something special
（）40. Li Na is ___________ tennis.
A. famous as
B. famous to
C. famous for
D. famous with
（）41.There ________ a great concert in the theater next Sunday everything.
A. will be
B. will have
C. has
D. have
（）42Beijing is in the ________ part of China.
A. south
B. north
C. southern
D. northern
（）43.where would you like to go on vacation this summer?
Brazil. Because the 31st Rio Olympic Games _________ there.
A. will be held
B. will hold
C. will be happened
D. are held （）44.The man left the room angrily without________ a word.
A. say
B. saying
C. talk
D. talking
（）45.Hi, madam. Can I take the storybooks out?
No, my boy. They _______ be taken out of the reading room. It’s a rule.
A. mustn’t
B. needn’t
C. couldn’t
D. wouldn’t
第3页
（）46. She puts on some warm clothes to protect herself _________ the cold air outdoors.
A. for
B. out
C. against
D. of
（）47. I __________ the book Little Women, but I’ll let you read it fast.
A. haven’t read
B. don’t read
C. won’t read
（）48.----How many times _______ Carl _______ to the Great Wall?
-------Only once.
A. does: go
B. did: go
C. has; gone
D. has; been
（）49.The old couple is so kind that they regard the homeless child _____ their grandson.
A. as B, for C. with D, to
（）50.My friend is rather honest. I’m proud of her ________.
A. kindness
B. honest
C. honesty
D. kind
（）51.----Can you tell me ________________?
-----His home is quite far from the office, I think.
A. where he works
B. why he bought the car
C. when he got up
D. how he likes his job
（）52.---He always appears to _____________.
----That’s because he’s really knowledge and experienced.
A. make an effort
B. have a point
C. pull together
D. take place
（）53.It’s very impolite to ________ when your parents speak to you.
A. talk to
B. talk up
C. talk with
D. talk back
（）54.They try their best to pass the exam.
However, they don’t _________ it.
A. win
B. succeed
C. fail
D. manage
（）55.Will you come to the net bars with me ?
Sorry. My mother always tell me ___________ there.
A. not go
B. go
C. not to go
D. to go
（）56.He hardly hurt himself in the accident,___________?
A. doesn’t he
B. didn’t he
C. did he
D. does he
（）57.Who’s the man at the door? ____________
A. He is a doctor
B. He is a friend of mine
C. He is a famous singer
D. He is twenty.
（）58.The girl asked the teacher________________.
A. what does the museum
B. what did the museum look like
C. what the museum looks like
D. what the museum looked like
（）59.Shanghai is larger than________ city in Jiang Su.
A. any
B. any other
C. other
D. one
（）60.What did you _______ at the meeting yesterday?
A. speak
B. tell
C. say
D. talk
（）61. The bus is coming. Let’s _____________.
第4页
A. get it on
B. get it off
C. get on it
D. get off it
（）62.Must I finish the work before five o’clock?
No. You_______ finish it before eight.
A. mustn’t
B. needn’t
C. can’t
D. can
（）63. I will tell him as soon as he _________ back.
A. come
B. comes
C. will come
D. came
（）64. What do you think _________ solve the problem.
A. you can do
B. can you do
C. you can do to
D. can you do to （）65. In the past he often made his sister ____ ,but now he is often made _____ by his sister.
A. to cry; to cry
B. cry; cry
C. to cry; cry
D. cry; to cry
（）66. He ________ Alice for ten years.
A. marries to
B. has married to
C. has married
D. has been married to
（）67.Granny looked for her book, but she couldn’t find it _____.
A. somewhere
B. everywhere
C. anywhere
D. nowhere
（）68. ________ it is today!
A. What fine weather
B. What a fine weather
C. How a fine weather
D. How fine a weather
（）69.We will have a _________ holiday after the exam.
A. two month
B. two-month
C. two month’s
D. two-months
（）70. There is no enough ________ on the corner to put the table.
A. place
B. room
C. floor
D. ground
（）71. Robert has gone to _________ city and he’ll be back in a week.
A. other
B. the other
C. another
D. any other
（）72. Which book would you like to borrow?
________ of the two books is OK with me.
A. Either
B. Both
C. Any
D. None
（）73. There are many trees on ________ side of the street.
A. either
B. any
C. all
D. both
（）74. ________ is the population of the city?
A. How many
B. What
C. How many people
D. How much （）75. About ______ the fans are waiting here. They want to see the great singer.
A. two thousand of
B. two thousand
C. thousand of
D. two thousands of
（）76.He hasn’t heard from his friend _________ last month.
A. since
B. by the end of
C. for
D. until
（）77.I don’t know when he _____. When he _____ here, I’ll call you in a minute.
A. will come; will arrive
B. comes; arrives
C. will come; arrives
D. comes; will arrive
第5页
（）78. The train _________ for twenty minutes.
A. left
B. has left
C. is leaving
D. has been away （）79. Could I use your dictionary?
Yes, you _________.
A. need
B. could
C. can
D. should
（）80. In the past few years there _________ great changes in my hometown.
A. have been
B. were
C. had been
D. are
（）81.Did you do ___________ last month?
Not really. I just stayed at home.
A. special anything
B. anything special
C. interesting special
D. anywhere interesting
（）82.Bob is very clever. I’m sure he can finish the work with________ money and ______ people.
A. less; less
B. fewer; more
C. more; fewer
D. less; fewer
（）83.—Tommy, do you know if Frank ___ to the theatre with us this Sunday if it ____?
—Sorry, I have no idea.
A. will go, is going to be fine
B. goes, is fine
C. will go, is fine
D. goes, will be fine
（）84. I don’t have to introduce him to you ____ you know the boy.
A. until
B. unless
C. since
D. but
（）85.—This pair of shoes _______ really small for me.
—Why not try another _________.
A. is, pair
B. are, pair
C. is, one
D. are, one
（）86. The shop ________ at 8:00 a.m. and it ________ for ten hours every day.
A. opens; is open
B. is opened; opens
C. is open; has opened
D. opened; opens
（）87.When did you ______the book to the library?
－Yesterday afternoon.
A. borrow
B. lend
C. give
D. return
（）88. ______he ever ______abroad ?－No, never.
A. Did, go
B. Is, been
C Has, been D. Has, gone
（）89. She______ an English teacher.
A. uses to
B. used to
C. use to be
D. used to be
( )90. My hobby is ______all kinds of coins.
A. to collect
B. collecting
C. to pick up
D. picking up
( )91. My postcard is still on the desk. Why ______you ______it ?
A. haven't , posted
B. didn't, post
C. wasn't posting
D. won't, post
( )92.I __________ my father’s wet shoes and washed his feet.
A. took out
B. took off
C. took place
D. took away
第6页
( )93. I don’t know where Mr. White has gone. You’d better ask ____.
A. else somebody
B. other somebody
C. somebody else
D. anybody else
( )94. When he saw a ticket on the ground, he stopped ____.
A. to pick it up
B. pick it up
C. to pick up it
D. pick up it
( 95. Tom ______ there for 10 months since he ______ back to his hometown.
A. has lived, gets
B. has lived, got
C. lived, go
D. lived, has got
( )96. The film is very ___. Tom is very ____.
A. exciting, excited
B. excited, exciting
C. exciting, exciting
D. excited, excited
( )97. ____the weather will be like tomorrow, we II go surfing.
A. No matter how
B. No matter what's
C. No matter what
D. No matter if
( )98. Neither you or he ______ Hawaii before.
A. has gone to
B. have gone to
C. have been to
D. has been to
( )99. ________ will the concert start? ------ In about five minutes.
A. How far
B. How soon
C. How often
D. How long
( )100. As soon as he ____, he will write to me.
A. arrives at
B. arrives
C. reaches
D. gets
( )101. Linda, you can have the book now, I’ve just finished_______ it.
Ok, Thank you.
A. read
B. reads
C. reading D, to read
( )102. I invited four teachers and ______ can come . That’s great.
A. all
B. both
C. neither
D. none
( )103.They traveled all night to the village and got there _____ Sunday morning.
A. for
B. on
C. at
D. in
( )104. Can you tell us ______ yesterday , Sir?
By bus.
A. how did you arrive here.
B. how you arrived here
B. how will you arrive here D. how you will arrive here
( )105. Have you got a job offer?
Not yet. I _________.
A. waited
B. am waiting
C. wait
D. have waited
( )106. I’ m afraid I can’t do well in the game. _________. It’s just for fun.
A. Sounds good
B. What a pity
C. Thank you
D. Take it easy ( )107. Is this your computer ? Yes, it’s _____. My mother bought it for me.
A. me
B. my
C. mine
D. myself
( )108. We’ll stay at home ______ it rains tomorrow.
A. and
B. if
C. but
D. so
( )109. Peter is _________ boy in our class and he often helps us carry heavy things.
A. strong
B. stronger
C. strongest
D. the strongest
( )110. This Saturday is my ________ birthday. Welcome to my party!
A. fourteenth
B. the fourteenth
C. fourteen
D. the fourteen
第7页
( )111. It’s not a good habit to ________ what you can do today till tomorrow.
A. take off
B. put off
C. get off
D. turn off
( )112. Mum, I’ve signed for the box. What’s in it?
I’m not sure. It ______ be a present from your uncle.
A. need
B. must
C. may
D. will
( )113. Mr. Wang isn’t here, I think he _________ Gui yang.
A. has gone to
B. has been to
C. goes
D. went
( )114. Mr. Green_______ to sing an English song at the party and he sang well.
A. was invited
B. invited
C. is invited
D. invites
( )115. Judy, could you tell me ________ the schoolbag?
Oh, yes. I bought it in a store on the Internet.
A. where did you buy
B. where will you buy
C. where you bought
D. where you will buy
( )116.He does his homework as__________ as lily.
A. careful
B. carefully
C. more carefully
D. most carefully ( )117.He’s going to _____ an engineer when he ________ up.
A. be; grows
B. do; grows
C. be; grow
D. do; grow
( )118. The place is very calm and _______ . I really like it.
A. crowed
B. polluted
C. peaceful
D. dangerous
( )119.Can you come to my birthday party on Wednesday? Sure,________
A. I would like
B. I can’t come
C. I’m sorry to hear it
D. I’d love to
( )120. Don’t worry about me. I’m old enough to think for________.
A. himself
B. herself
C. yourself
D. myself
第8页
姓名_______________ 得分_____________________
1~5___________________ 6~10_______________________ 11~15_________________ 16~20______________________ 21~25_________________ 26~30______________________ 31~35_________________ 36~40______________________ 41~45_________________ 46~50______________________ 51~55_________________ 56~60______________________ 61~65_________________ 66~70______________________ 71~75_________________ 76~80______________________\ 81~85_________________ 86~90______________________ 91~95_________________ 95~100_____________________ 101~105_______________ 106~110______________________ 111~115________________ 116~120_____________________
答案：
1~5_CACDC___________ 6~10__DACCD______________ 11~15_CCAAA_________ 16~20__ACCBB______________ 21~25_CCBBA_________ 26~30__CDCAD______________ 31~35_BCCCC_________ 36~40__DBBDC_____________ 41~45_ADADA_________ 46~50__CADAC____________ 51~55_BBDDC_________ 56~60___CBDAC____________ 61~65_CDBCD_________ 66~70___DCABB____________ 71~75_CAABA_________ 76~80___ACDCA_____________ 81~85_BDCCA_________ 86~90___ADCAA_____________ 91~95_ABCAB__________ 95~100___ACDBB______________ 101~105_CABBB________ 106~110__DCBDB______________ 111~115_BCAAC________ 116~120_BACDD______________
中考生物会考单项选择题20题精选汇总(含答案)
选择题(本题共20小题，每小题3分，共60分.在每小题给出的四个选项中，只有一个选项是符合题目要求的) 1.在使用显微镜观察时，如果将物镜由高倍转换为低倍时，应明确观察的物像的细胞的变化和光线将会( ) A.细胞数量增加，光线变亮 B.细胞数量减少，光线变暗 C.细胞数量不变，光线不变 D.细胞数量减少，光线变亮 2.与洋葱表皮细胞相比，细菌的细胞中没有的是( ) A.细胞壁 B.细胞质 C.细胞膜 D.成形的细胞核 3.夜晚卧室里不宜放植物的原因是( ) A.花在白天吸收氧过多，使室内缺氧 B.植物蒸腾作用使室内水分过多，太潮湿 C.晚上花的呼吸作用与人争夺氧 D.占据空间，不利于人的活动 4.探究根的生长中，对根尖等距离划细线，过一段时间后会发现细线之间距离最大的是( ) A.根冠 B.分生区 C.伸长区 D.成熟区 5.如果用如图1所示，表示各种概念间的关系，下列选项中与图示相符的是( ) A动物无脊椎动物节肢动物昆虫 B生物圈生态系统绿色植物生产者 C被子植物裸子植物双子叶植物单子叶植物 D纲科目种 6.将经过黑暗各件处理的天竺葵的叶片一部分把上下两面遮盖起来，移到光下照射，然后 经过处理再滴加碘液，所看到的现象和对现象理解正确的是( ) ①见光部分变蓝②未见光部分也变蓝③产生了淀粉④未产生淀粉 ⑤需光⑥不需光⑦场所是叶绿体⑧不需要叶绿体 A.①③⑤⑦ B.②③⑤⑦ C.①④⑥⑦ D.①④⑤⑧ 7.粮食放久了，会引起发热现象的原因是( ) A.光合作用放出热量 B.呼吸作用放出热量 C.蒸腾放出热量 D.空气不流通引起发热 8.下列哪项不是小肠的结构与其吸收功能相适应的特点( )
英语中考单项选择题经典试题汇总
英语中考单项选择题经典试题汇总 ( ) 1. ________ it is today! A. What fine weather B. What a fine weather C. How a fine weather ( ) 2. Which is the way to the __________? A. shoe factory B. shoes factory C. shoe’s factory D. sh oes’ factory ( ) 3. This class ________ now. Miss Gao teaches them。 A. are studying B. is studying C. be studying D. studying ( ) 4. We will have a _________ holiday after the exam。 A. two month B. two-month C. two month’s D. two-months ( ) 5. There is no enough ________ on the corner to put the table。 A. place B. room C. floor D. ground ( ) 6. We can have _____ blue sky if we create _____ less polluted world。 A. a; a B. a; the C. the; a D. the; the ( ) 7. — Are you ________ American or English? — English.. We are working in Wuhu. A. a B. \ C. the D. an ( ) 8. You like playing basketball, and he likes running, _______? A. don’t you B. doesn’t he C. do you D. does he ( ) 9. —Why not take ____ umbrella with the sign “ Made in China”？ It is _____ useful umbrella? —What _______ good advice it is! A. an; an; a B. an; a; \ C. a; an; a D. \; an; a ( ) 10. – When shall we meet again next week? -- _______ day is possible. It’s no problem with me。 A. Either B. Neither C. Every D. Any ( ) 11. Robert has gone to _________ city and he’ll be back in a week。 A. other B. the other C. another D. any other ( ) 12. –A latest magazine, please. - Only one left. Would you like to have ________? A. it B. one C. this D. that ( ) 13. – Which book would you like to borrow? -- ________ of the two books is OK with me。 A. Either B. Both C. Any D. None ( ) 14. Mrs. Lee teaches ________ math. We all like her。 A. we B. us C. our D. ours ( ) 15. There are many trees on ________ side of the street。
2018年中考政治时政热点押题卷专题汇总(解析版)
2018年中考政治时政热点押题卷专题汇总 (时间:90分钟满分:100分) 一、单项选择题(下列各题的备选答案中,只有一项是最符合题意的。每小题3分,共45分) 1.张明在网上结识了一个新网友,虽未见面但两个人非常谈得来。一天网友对张明说,自己要搞一项社会调查,希望张明能把家庭详细住址告诉他。这时张明应该() A.相信网友,直接告诉他 B.问明白调查原因后再告诉他 C.约他见面后再告诉他 D.严词拒绝,坚决不告诉他 答案:B 2.中共中央组织部等11部委联合启动国家高层次人才特殊支持计划(简称“万人计划”),准备用10年时间,加快培养造就一批为建设创新型国家提供坚强支撑的高层次创新创业人才。我国政府出台这一举措的原因是() A.中华民族的伟大复兴呼唤人才 B.中国要发展只有靠高层次创新人才 C.人才是第一生产力
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2020中考英语100道单项选择题专题训练(附答案)
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2018年中考政治真题试题(含解析)
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广东省2020中考生物真题试题(含答案)
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长沙市2018年中考生物真题(含解析)
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【解析】植物体的结构层次是：细胞→组织→器官→植物体。植物细胞是植物进行生命活动的基本单位，细胞通过分裂分化形成组织，由组织形成器官、植物体；荔枝最外面是果皮，里面包着的是种子，从植物体的结构层次来看，荔枝是果实，属于一种生殖器官。 5. 小丽用显微镜观察黄瓜果肉细胞时，发现有多个气泡影响观察。为找到较好的观察视野，正确的做法是 A. 擦拭物镜 B. 转动反光镜 C. 移动载玻片 D. 调节细准焦螺旋 【答案】C 【解析】在显微镜下观察物像，如果发现有多个气泡影响观察，由于气泡主要是存在于装片上，因此应移动装片，寻找没有气泡的清晰物像进行观察。擦拭物镜只是可以去除污点；调节反光镜、转动细准焦螺旋等操作，只是改变视野的明暗和物像的清晰度，不能去除气泡。 6. “墙角数枝梅，凌寒独自开”描述了寒冬绽放的梅花。梅花结构中发自成果实的是 A. 花瓣 B. 雄蕊 C. 柱头 D. 子房 【答案】D 【解析】受精完成后子房的发育情况如图： 从图中可知，受精后，花的结构中，子房将发育成果实。 7. 某生物社团的学生想观察植株的生长发育，他们带来了以下生物材料，其中不会生长成植株的是 A. 绿豆 B. 大米 C. 土豆 D. 柳枝 【答案】B 【解析】绿豆是植物的种子，只有符合萌发的条件，才可以发芽，生长成植株，A不符合题意； 大米是水稻的种子经过加工制成的，只剩下了种子的胚乳部分，不会萌发生长成植株，B符合题意； 土豆是植物的茎，上面有许多芽眼，只要条件具备，可以发芽，生长成植株，C不符合题意； 将柳枝插入土壤，可以生根发芽，生长成植株，D不符合题意。 8. “白日不到处，青春恰自来。苔花如米小，也学牡丹开。”这首诗经央视《经典咏流传》播出后，广为传唱。诗中的“苔花”描述的是苔藓植物，其不具有的结构是
中考英语单项选择题专题练习：名词
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中考生物单项选择题的答题技巧 很多选择题，题干设计若明若暗，条件隐晦，选项设置似是而非，极具迷惑性。解答这类题时，既要细致审题，又要善于抓住关键；既要全面分析，又要清除干扰。 1、仔细审题，看清正误。 题干中有时是要求选说法正确的选项，有时则是要求选说法不正确的选项。因而，做题前要仔细审题，看清题目要求，不要未看完题干而盲目选择。当你读完一道题没有解题思路的时候，就再一字一句的认真读一遍，可能就会发现很多有用的信息。 2 找准关键词，挖掘隐含条件。 试题的题干中常有一些关键词，如“最”“至少”“主要”“直接”“基本”“根本”等，在读题时把这些关键词标注下来，有助于做题。考生在做题时要善于从这些关键词中找出突破点，从而确定出正确选项。在题干中往往隐藏一些信息，一定要认真审题挖掘隐含条件。 3 打破思维定势，排除干扰。 有些试题利用考生对日常现象和习题训练中的思维定势干扰正确解答，考生在审题时，一定要看清题目要求。建议大家在全卷做完后再仔细审查一遍。 4、注意图示信息，寻找关键点。 图表选择题具有直观、简明且能蕴含丰富信息的特点，便于通过分析作出进一步的推断。考生在解答用图表表示题意的选择题时，要
充分注意其中的细节，如曲线图的升或降、拐点或折点的位置、斜率的变化、题干的文字说明、信息的处理和转换等。 中考生物：考点全总结！ 一、食物的消化与吸收 1、蛋白质：细胞生长及修补组织的主要原料。 2、糖类：人体所需能量的主要来源。 3、脂肪：是生物体内储存能量的物质。 4、水：构成细胞的主要成分，体内的养分和废物必须溶解在水中运输。（水是细胞内的溶剂，水是生物体温调节剂，水是光合作用的原料） 5、无机盐：不能提供能量，维持正常生理活动的所需。 6、维生素：参与人体内许多重要的生理活动，维持人体正常生理活动不可缺少的微量元素。 7、粗纤维：促进肠道蠕动，有利于及时排便。 二、食物的消化与吸收 1、消化与吸收的主要场所：小肠 2、蛋白质的最终消化产物：氨基酸 3、糖类的最终消化产物：葡萄糖 4、脂肪的最终消化产物：脂肪酸和甘油 5、食物中的水、无机盐、维生素可以直接被消化吸收 6、食物中的粗纤维不能被消化吸收（以粪便的形式排出体外） 三、血液循环
中考英语单项选择题典型题集
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