Book 5 unit 3 单元练习
阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。
A
You probably know who Marie Curie was, but you may not have heard of Rachel Carson. Of the outstanding ladies listed below, who do you think was the most important woman of the past 100 years?
Jane Addams(1860-1935)
Anyone who has ever been helped by a social worker has Jane Addams to thank Addans helped the poor and worked for peace. She encouraged a sense of community(社区)by creating shelters and promoting education and services for people in need In 1931,Addams became the first American woman to win the Nobel Peace Prize.
Rachel Carson(1907-1964)
If it weren’t for Rachel Carson, the environmental movement might not exist today. Her popular 1962 book Silent Spring raised awareness of the dangers of pollution and the harmful effects of chemicals on humans and on the world’s lakes and oceans. Sandra Day O’Connor(1930-present)
When Sandra Day O’Connor finished third in her class at Stanford Law School,in 1952, she could not find work at a law firm because she was a woman. She became an Arizona state senator(参议员) and ,in 1981, the first woman to join the U.S. Supreme Court. O’Connor gave the deciding vote in many important cases during her 24 years on the top court.
Rosa Parks (1913-2019)
On December 1,1955, in Montgomery, Alabama, Rosa Parks would not give up her seat on a bus to a white passenger. Her simple act landed Parks in prison. But it also set off the Montgomery bus boycott. It lasted for more than a year, and kicked off the civil-rights movement. “The only tired I was, was tired of giving in,” said Parks.
1. What is Jane Addams noted for in history?
A. Her social work.
B. Her teaching skills.
C. Her efforts to win a prize.
D. Her community background.
2. What is the reason for O’Connor’s being rejected by the law firm?
A. Her lack of proper training in law.
B. Her little work experience in court.
C. The discrimination against women.
D. The poor financial conditions.
3. Who made a great contribution to the civil-rights movement in the US?
A. Jane Addams.
B. Rachel Carson.
C. Sandra Day O’Connor.
D. Rosa Parks.
4. What can we infer about the women mentioned in the text?
A. They are highly educated.
B. They are truly creative.
C. They are pioneers.
D. They are peace-lovers.
B
Even though they were written 150 years ago, Alexander Dumas’ action novels still excite millions of readers around the world, in close to 100 languages.
Dumas’ two most famous stories, The Three Musketeer s（火枪手）and The
Count of Monte Cristo, have inspired more than 100 films. The former one was adapted（改编）into a popular film, The Man In the Iron Mask, in 2019. In the film Leonardo Di Caprio played both King Louis XIV and his twin brother Philippe.
Few people know, however, that the author was the grandson of a Haitian slave. Even fewer people know that Dumas’ father rose rapidly from a soldier to a general in the French Army before he was 31. The general died young, leaving Alexander little money. But determined Dumas conquered the problems of being poor, having received little formal education, and racism (种族歧视) to become one of the world’s most popular writers.
Dumas’ life sometimes was just like his action novels. He took part in three revolutions（革命）and fought for the freedom of people. After making a fortune by writing novels, he built a mansion outside Paris and kept it open to poor artists, friends, and even strangers. Luckily for his fans, the mansion has recently been restored and opened to the public.
5. Which of the following statements about Alexander Dumas is NOT TRUE? _____.
A. He suffered from racism.
B. He was well-educated.
C. He was the son of a general.
D. He partly based his novels on his life.
6. Alexander Dumas’ novels _____.
A. have lasted for less than 100 years
B. have been translated into more than 100 languages
C. have attracted readers for many years
D. have not been well received until recently
7. Why was the film The Man in the Iron Mask mentioned in paragraph 2? _____.
A. To show Dumas’ novels are out of fashion
B. To advertise for the film
C. To prove the popularity of Dumas’ novel among readers
D. To acknowledge the amazing acting skills of Leonardo Di Caprio
8. We may infer from the article that Dumas _____.
A. did not live a colorful life
B. was a man who kept money to himself
C. led three revolutions in France
D. was a generous and kind-hearted man
第二节（共5小题；每小题2分，满分10分）
根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
Everyone knows that fish is good for health. 9 But it seems that many people don’t cook fish at home. Americans eat only about fifteen pounds of fish per person per year, but we eat twice as much fish in restaurants as at home. Buying, storing, and cooking fish isn’t difficult. 10 This text is about how to buy and cook fish in an easy way.
11 Fresh fish should smell sweet: you should feel that you’re standing at the ocean’s edge. Any fishy or strong smell means the fish isn’t fresh. 12 When you have bou ght a fish and arrive home, you’d better store the fish in the refrigerator if you don’t cook it immediately, but fresh fish should be stored in your fridge for only a day or two. Frozen fish isn’t as tasty as the fresh one.
There are many common methods used to cook fish. 13 First,clean it and seas on it with your choice of spices(调料).
Put the whole fish on a plate and steam it in a steam pot for 8 to 10 minutes if it weig hs about one pound. (A larger one will take more time.) Then, it’s ready to serve.
A. Do not buy it.
B. The easiest is to steam it.
C. This is how you can do it.
D. It just requires a little knowledge.
E. The fish will go bad within hours.
F. When buying fish, you should first smell it.
G. The fats in fish are thought to help prevent heart disease.
第三部分：英语知识运用（共两节，满分45分）
第一节完形填空（共20小题；每小题1.5分，满分30分）
Sometimes I really doubt whether there is love between my parents. Every day they are very busy trying to __1__ in order to pay the high tuition for my brother and me. They don’t act in the __2__ ways that I read in books or I see on TV. In their opinion, ―I love yo u is too __3__ for them to say. Sending flowers to each other on Valentine‘s Day is even more out of __4__.
One day, my mother was sewing a quilt(缝被子). I sat down beside her. “Mom, I have a question to ask you. Is there __5__ between you and Dad?”, I asked her in a very low voice. She didn’t answer immediately. She __6__ her head and continued to sew the quilt.
I was very worried because I thought I had _7_ her. I was _8__ and I d idn’t know what I should do. But at last I heard my mother say the following words: “Susan,” she said thoughtfully, “Look at this thread. Sometimes it __9_, but most of it disappears in the quilt. The thread really makes the quilt __10__. If life is a quilt, then love should be a thread. It can hardly be seen __11_, but it‘s really there. Love is __12__.”
I listened carefully but I __13__ her until the next spring. At that time, my father suddenly __14_ seriously. My mother had to stay with him in the hospital for a month. When they returned from the hospital, they both looked __15 _. It seemed both of them had had a serious illness. After they were back, every day in the morning and dusk, my mother helped my father __16__ on the country road．
“Dad, how are you feeling now?” I asked him one day.
“Susan, don’t __17__ me.” he said gently. “To tell you the truth, I just like walking with your mom.”_18__ his eyes, I know he loves my mother deeply.
Once I thought love meant flowers, gifts and __19__. But from this experience, I understand that love is just __20__ in the quilt of our life. Love is inside, making life strong and warm.
1. A．keep fit B．rise early C．earn money D．collect money
2. A．magic B．romantic C．fantastic D．attractive
3. A．simple B．easy C．relaxing D．luxurious
4. A．the question B．question C．reach D．control
5. A．feeling B．love C．quarrel D．smile
6. A．raised B．shook C．nodded D．bowed
7. A．hurt B．injured C．wounded D．harmed
8. A．in great surprise B．in a great embarrassment
C．with deep depression D．at extreme sorrow
9. A．happens B．comes about C．appears D．occurs
10. A. warm and soft B．hot and hard
C．thin and cool D．strong and durable
11. A. somewhere and sometime B．anywhere or anytime
C．more or less D．here and there
12．A．inside B．outside C．faraway D．nearby 13．A．could believe B．couldn‘t understand
C．wouldn‘t recognize D．might know
14．A．got sick B．got stuck C．threw up D．became disabled 15．A．quite healthy B．very pale C．fairly red D．much surprised 16．A．jump high B．go hurriedly C．run fast D．walk slowly 17．A．think about B．talk with C．worry about D．laugh at 18．A．Reading B．Seeing C．Saying D．Writing 19．A．fresh roses B．gold ring C．sweet kisses D．beautiful jewelry 20．A．a thread B．a needle C．the cloth D．the cotton
第二节：语法填空（共10小题；每小题1.5分，满分15分）
Friendship is one of the most important things in everyone’s life. 1______ is very difficult to find a better definition(定义) of friendship. A true friend is the person 2_______ can share all our sadness and double all our happiness. In time of trial(尝试) , he or she is always at our side to give us his or her help and comfort.
Knowing how 3________ (value) friendship is, we should be very careful with our choice of a friend. We should choose those people with a good character 4________ our friends, but we must try to avoid 5________ (make) friends with a bad man. Besides, we should forgive their mistakes and try to help them as much as possible.
A true friend can always 6________ (trust), loved and respected. If you tell a friend your secrets, he or she won’t tell 7________. Friends share their joys and sorrows. They help each other when they are 8________ trouble, and cheer each other up when they are sad. 9________ most important thing is that a friend always understands you. In conclusion, 10________ you have made a good friend, don’t forget him or her.
第四部分：写作（共两节，满分35分）
第一节短文改错(共10小题；每小题1分，满分10分)
My father and I stayed at the South Lake Hotel for a week when we visit Beijin g last month. It is in the downtown area, but it is easy to go to anywhere from the hote l by public transport. We lived in a comfortably double-room with a big bath. What I liked best were the free high-speed Internet connection in the room. I checked my em ail messages every day. I also shared for my friends many photos taking in Beijing. Th e food was wonderful
with reasonable prices, and we enjoyed several local dish. It is such great hotel that I
would recommend it to any friend of me who is going to Beijing.
第二节书面表达(满分25分)
假定你是李华。你班同学决定为小明举办生日聚会。请你写信邀请外教Susan参加，要点包括：
1.时间：周五晚8点至9点
2.地点：学生俱乐部
3.内容：生日歌、蛋糕、游戏等
4.要求：备小礼物
Hi, Susan,
_______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________
Book 5 unit 3 单元测试参考答案
第二部分：阅读理解
第一节（共1小题；每小题2分，满分8分）
1-4:ACDC 5-8: BCCD
第二节（共5小题；每小题2分，满分10分）
9-13: GDFAB
第三部分：英语知识运用（共两节，满分45分）
第一节完形填空（共20小题；每小题1.5分，满分30分）
1．C 2．B 3．D 4．A 5．B
6．D 7．A 8．B 9．C 10．D
11．B 12．A 13．B 14．A 15．B
16．D 17．C 18．A 19．C 20．A
第二节：语法填空（共10小题；每小题1.5分，满分15分）
1. It
2. who/that
3. valuable
4. as
5. making
6. be trusted
7. others
8. in
9. The 10. when 第四部分：写作（共两节，满分35分）
第二节短文改错(共10小题；每小题1分，满分10分)
小题1:visit—visited
小题2:but----and/so
小题3:to 去掉
小题4:comfortably ---comfortable
小题5:were---was
小题6:for---with
小题7:taking---taken
小题8:dish---dishes
小题9:such后加 a
小题10:me—mine
第二节书面表达(满分25分)
One possible version:
Hi, Susan,
We're throwing a surprise party for Xiaoming's birthday. We'd like to invite you to the party. We want to give him a surprise, so please keep quiet about it. We'll gather at the Students' Club at 8 p.m. this Friday, after the evening classes.
And it's going to last about an hour. We each will prepare a little present. When he comes, we'll light the candles and sing "Happy Birthday" together for him. Then the cake will be cut and we'll sing songs and play games. It'll be nice to see how excited he will be. I'm sure you'll have a good time at the party, too.
Yours,
Lihua
第2单元 综合测试 （满分120分，时间120分钟） 一、积累运用（18分，每小题3分） 1.下列各组词语中没有错别字的一项是（ ） A.物华天宝钟明鼎食老当益壮高山流水 B.人杰地灵淹淹一息穷且益坚青云之志 C.千里逢迎天高地迥桑榆非晚皇天后土 D.高朋满座萍水相逢一芥书生形影相吊 2.下列各句都有通假字的一项是（ ） ①问征夫以前路，恨晨光之熹微 ②云销雨霁，彩彻区明 ③我决起而飞，抢榆枋而止 ④而征一国者，其自视也，亦若此矣 ⑤若夫乘天地之正，而御六气之辩 ⑥臣密言：臣以险衅，夙遭闵凶 A.①②⑤⑥ B.②③④⑤ C.②④⑤⑥ D.③④⑤⑥ 3.下列各句中加点词语的意义和用法与现代汉语相同的一项是（ ） A.于是．．怅然慷慨，深愧平身之志 B.三餐而反，腹犹果然．． C.零丁孤苦，至于成立．． D.欲苟顺私情，则告诉．． 不许 4.下列各句中加点词语的用法相同的一项是…（ ） A.?? ?????为奚以之九万里而南乎遑欲何之为故)2()1( B.?? ?????辞不赴命供养无主以臣遂见用于小邑余贫苦以家叔,)2(,)1( C.?? ?????亦若此矣其自视也征一国者而控于地而已矣而时则不至,,)2(,)1( D.?? ?????已是汤之问棘也而昨非是觉今实迷途其未远)2(,)1( 5.下面对文学常识的表述不正确的一项是（ ） A.辞，是介乎诗歌和散文之间的一种文体。因为起源于战国时的楚国，也叫楚辞、楚辞体；又因为《离骚》为这种文体的代表作，所以又称骚体。到了汉代，人们一般将辞赋并称。 B.《滕王阁序》是一篇骈体文，其特点是：讲求对仗，一般是用四字句和六字句；平仄相对；多用典故，讲求藻饰。 C.《逍遥游》是《庄子》中的代表作品。逍遥游，即超然物外、无拘无束、绝对
高一化学必修一第四章单元测试题 班别：姓名： 一、选择题 1．(北师附中)保护环境，就是关爱自己。下列说法中你认为不正确 ．．．的是() A．空气质量日报的主要目的是树立人们环保意识，同时也让人们知道了二氧化硫、二氧化氮和可吸入颗粒物是大气主要污染物 B．酸雨是指pH小于7的雨水 C．为了减少二氧化硫和二氧化氮的排放，工业废气排放到大气之前必须进行回收处理D．居室污染是来自建筑，装饰和家具材料散发出的甲醛等有害气体 2．(2010年东北师大附中期末考试)下列物质为纯净物的是() A．水泥B．水玻璃C．氨水D．液氯 3．高层大气中的臭氧保护了人类生存的环境，其作用是() A．消毒B．漂白C．保温D．吸收紫外线 4．下列物质不会因见光而分解的是() A．NaHCO3B．HNO3C．AgI D．HClO 5．下列实验能证明某无色气体为SO2的是() ①能使澄清石灰水变浑浊②能使湿润的蓝色石蕊试纸变红 ③能使品红溶液褪色，加热后又显红色 ④能使溴水褪色，再滴加酸化的BaCl2溶液有白色沉淀产生 A．①②③④B．①③④C．③④D．②③④ 6．下列说法正确的是() ①正常雨水的pH为7.0，酸雨的pH小于7.0； ②严格执行机动车尾气排放标准有利于防止大气污染； ③使用二氧化硫或某些含硫化合物进行增白的食品会对人体健康产生损害； ④使用氯气对自来水消毒过程中，生成的有机氯化物可能对人体有害； ⑤食品厂产生的含丰富氮、磷营养素的废水可长期排向水库养鱼。 A．①②③B．①④⑤C．②③④D．③④⑤ 7．为了加速漂白粉的漂白作用，最好的方法是() A．加入苛性钠溶液B．用水湿润C．加少量稀盐酸D．加热干燥使用8．下列物质中同时含有氯气分子(Cl2)和氯离子(Cl－)的是() A．食盐水B．氯酸钾溶液C．新制氯水D．液态氯化氢 9．香烟烟雾中含有CO、CO2、SO2、H2O等气体。用a.无水硫酸铜、b.澄清石灰水、c.红热氧化铜、d.生石灰、e.酸性品红溶液等可将其一一检出，检出的正确顺序是()
Unit3 知识点（14个） 1．expect (sb.) to do sth. 希望(某人)做某事I expect to be back within a week. hope to do something 希望做某事 2．overcome one‘s shortcomings 克服缺点overcome enemy 压倒, 制服 be overcome with/by sth ...不堪(通常指感情，常用被动语态） She was overcome by fear. 她吓得要命 3.First impressions.第一印象impressions: n. [C] 印象;感想 I had a very good impression of him. 我对他的印象很好. First impressions are half the battle. [谚]最初的印象最深刻; 先入为主。 impress 1) v. 使(某人)印象深刻 He impressed me unfavorably. 我对他印象不好 注意:使（某人）印象深刻，常用这个句型
be impressed by/at/with sth 对…留下深刻印象，惊叹 通常用于被动语态,不用于进行时,常用于下列结构: The teachers were most impressed by your performance in the exam. 2) v.使(某人)铭记 impress sth on sb /impress sb with sth 3）impressive 给人深刻印象的, 感人的an impressive scene 感人的场面 an impressive ceremony 给人深刻印象的典礼 4. take up Do you intend to take up his offer of a job?接受 This table takes up too much room.占用(时间或空间) When does the new manager take up his job?开始从事 由take组成的短语：take后面接 office就职
M5U3. 重点短语和用法 M5 Unit 3 Science versus nature 1. on (the) one hand 一方面 2. on the other hand 另一方面 3. point out指出 4. on the way to (doing) sth在去…的路上；即将做…… 5. in general 总的来说 6. concentrate on 集中注意力于…… 7 with the intention of 目的是 8. be related to与…...有关9. push ahead with 推进 10. interfere with 干涉，干扰11. be similar to与……相似 12. to conclude 得出结论 13. complain about对…….抱怨14. in response to对……的回复/反应 15. comment on对……做出评价 16. consider doing 考虑做……17. adopt sb/sth 收养；接受 18. the other day前几天 19. urge sb to do sth敦促某人做…… 20. focus on集中于，关注21. in favour of支持 22. meet one’s needs满足某人的需要 24. turn out结果是；生产 25. blame…for因为…….责备…… 26. praise…for因为……表扬…… 27. end up以…….告终28. use up 用完，用光 29. figure out计算出；弄清楚，弄明白 30. concentrate on集中注意力于…… 31. succeed in doing 做成了某事 32. in reply to 对……的回复 33. on one’s part对……而言 38. with reference to 关于…… 39. so far 到目前为止 40. donate…to把……捐赠给…… 41. someone else’s其余的某个人的 42. be resistant to 抵制 43. follow in one’s footsteps追寻某人的足迹 44. experiment on/with用……做实验 45. in complete agreement with 完全同意 46.for sale供出售，待销售 47. next door 隔壁的，相邻的 48. go against 违反，违背49. point of view 观点
Unit 2 The United Kingdom Ⅲ. 单项选择，从A、B、C、D四个选项中，选择最佳答案完成句子 1. Mr Smith our English teacher when she was sick. A. took the place of B. took place C. took his place D. in place of 2. The hotel has a restaurant for the guests’. A. comfort B. benefit C. convenience D. appreciation 3. Her health under the pressure of work. The doctor advised her to have a good rest. A. broke up B. broke down C. broke off D. broke away 4. The boy looked at me with a ______ expression. Maybe the explanation was quite . A. puzzled; puzzling B. puzzled; puzzled C. puzzling; puzzling D. puzzling; puzzled 5. When considering what to take, he an important factor: the weather. A. left over B. left out C. left behind D. left alone 6. The best solution to this task is to unite as many people as we can. A. undertaking B. performing C. accomplishing D. conducting 7. The main of this town is its beautiful springs. A. construction B. collection C. attraction D. building 8. The teacher our class four groups before we started the discussion. A. divided; up B. divided; into C. separated; into D. separated; from 9. Entering the classroom, I found Mary at the table and a composition. A. seated; writing B. seated; write C. seating; writing D. seating; written 10. It was a pity that the great artist died with his works . A. leaving unfinished B. left unfinishing C. leaving unfinishing D. left unfinished 11. They need to have my house thoroughly before they move in. A. clean B. to clean C. cleaned D. cleaning
物理必修一第四章测试题 一：选择题： 1.为了研究加速度跟力和质量的关系，应该采用的研究实验方法是（） A．控制变量法B．假设法C．理想实验法D．图象法 2.下面说法正确的是 A．物体的质量不变，a正比于F，对F、a的单位不限 B．对于相同的合外力，a反比于m，对m、a的单位不限 C．在公式F=ma中，F、m、a三个量可以取不同单位制中的单位 D．在公式F=ma中，当m和a分别用千克、米每二次方秒做单位时，F 必须用牛顿做单位 3.如图所示，质量均为m的A、B两球之间系着一根不计质量的弹簧，放在光滑的水平面上，A球紧靠竖直墙壁，今用水平力F将B球向左推压弹簧，平衡后，突然将F撤去，在这瞬间（） ①B球的速度为零，加速度为零 F ②B球的速度为零，加速度大小为m ③在弹簧第一次恢复原长之后，A才离开墙壁 ④在A离开墙壁后，A、B两球均向右做匀速运动以上说法正确的是 A．只有①B．②③C．①④D．②③④ 4.在光滑的水平面上访一质量为m的物体A用轻绳通过定滑轮与质量为m的物体B相联接，如图所示，物体A的加速度为a1，先撤去物体B，对物体A施加一个与物体B重力相等的拉力F，如图所示，，物体A的加速度为a2.则下列选项正确的是（） A.a1=2 a2 B. a1= a2 C. a2=2 a1 D.以上答案都不对。 5.对物体的惯性有这样一些理解，你觉得哪些是正确的？（） A 汽车快速行驶时惯性大，因而刹车时费力，惯性与物体的速度大小有关 B 在月球上举重比在地球上容易，所以同一物体在地球上惯性比在月球上大 C 加速运动时，物体有向后的惯性；减速运动时，物体有向前的惯性
D 不论在什么地方，不论物体原有运动状态如何，物体的惯性是客观存在的，惯性的大小与物体的质量有关 6.从地面竖直上抛一小球，设小球上升到最高点所用的时间为t1，下落到地面所用的时间为t2，若考虑到空气阻力的作用，则（） A t1 > t2 B t1 < t2 C t1 = t2 D 无法判断t1 , t2的大小 7.质量为8×103kg的汽车以1.5m/s2的加速度做匀加速直线运动，阻力为2.5×103N。那么，汽车的牵引力是（） A 2.5 ×103N B 9.5 ×103N C 1.2 ×104N D 1.45×104N 8.（多选）一有固定斜面的小车在水平面上做直线运动，小球通过细绳与车顶相连。小球某时刻正处于图示状态。设斜面对小球的支持力为N，细绳对小球的拉力为T，关于此时刻小球的受力情况，下列说法正确的是（） 填空题第二题图 A.若小车向左运动，N可能为零 B.若小车向左运动，T可能为零 C.若小车向右运动，N不可能为零 D.若小车向右运动，T不可能为零 9.（多选）关于伽利略的理想实验，下列说法中正确的是（） A. 这个实验实际上是永远无法实现的 B. 只要接触面相当光滑，物体在水平面上就能匀速运动下去 C. 利用气垫导轨，就能使实验成功 D. 虽然是想象中的实验，但是它是建立在可靠的事实基础上的 10.（多选）从水平地面竖直向上抛出一物体，物体在空中运动后最后又落回地面，在空气对物体的阻力不能忽略（假设阻力大小一定）的条件下，以下判断正确的是（）A．物体上升的加速度大于下落的加速度B．物体上升的时间大于下落的时间C．物体落回地面的速度小于抛出的速度D．物体在空中经过同一位置时的速度大小相等 二：填空题： 1.给出以下物理量或单位，请按要求填空。 A．米B．牛顿C．加速度D．米/秒2E．质量F．千克G．时间 H．秒I．位移J．厘米2K．千克/米2L．焦耳 （1）在国际单位制中作为基本单位的是__________。（2）属于导出单位的是___________。 2.如图，A、B两个质量均为m的物体之间用一根轻弹簧（即不计其质量）连接，并用细绳悬挂在天
U n i t3L i f e i n t h e f u t u r e FIRST IMPRESSIONS Spacemail: 15/11/3008(Earthtime) Dear Mum and Dad, I still cannot believe that I am taking up this prize that I won last year. I have to remind myself constantly that I am really in AD 3008. Worried about the journey, I was unsettled for the first few days. As a result, I suffered from “time lag”. This is similar to the “jet lag” you get from flying, but it seems you keep getting flashbacks from your previous time period. So I was very nervous and uncertain at first. However, my friend and guide, Wang Ping, was very understanding and gave me some green tablets which helped a lot. Well-known for their expertise, his parents’ company, called “Future Tours”, transported me safely into the future in a time capsule. him to or pressing fast as too many ” flashback soft room with 来源于网络
第二单元综合测试（新人教必修5） 一、基础知识 (18分，每题3分) 1.下列词语中加点字的读音完全正确的一项是( ) A.熟稔．(niǎn) 拔擢．(zhuó) 陨．首(yǔn) 茕茕孑．立(jié) B.自诩．(xǔ) 矜．育(jīn) 洗．马(xǐ) 决．起而飞(xuè) C.桨棹 ．．(zhào) 干涸．(hé) 逋．慢(bū) 恶．乎待哉(wū) D.赊．(shē) 笏．板(hù) 胜饯．(zhàn) 猥．以微贱(wěi) 2.下列词语中没有错别字的一项是( ) A.遐观孤鹜暇日天高地迥 B.宵逝南溟北冥云消雨霁 C.盘桓耸萃荟翠德合一君 D.绣闼侥幸扶摇鱼舟唱晚 3.下列句中不含通假字的一组是( ) A.小知不及大知。 B.臣以险衅，夙遭闵凶。 C.愿陛下矜悯愚诚。 D.汤之问棘也是已。 4.下列句中加点词语，古今意义相同的一项是( ) A.策扶老以．流憩。 B.野马也，尘埃也，生物 ．．之以息相吹也。 C.适莽苍者，三餐而反，腹犹果然 ．．。 D.奚惆怅 ．．而独悲？ 5.下列骈偶句的读法，节奏停顿有误的一项是( ) A.龙光/射/牛斗之墟。 B.落霞与/孤鹜/齐飞。 C.接/孟氏/之芳邻。 D.天柱高/而/北辰远。 6.下列句子中，没有活用现象的一项是( ) A.园日涉以成趣。 B.或棹孤舟。 C.臣具以表闻。 D. 宾主尽东南之美。 二、阅读欣赏 (28分) (一) 阅读选段，完成7～14题。 (16分，每题2分) 时维九月，序属三秋。潦水尽而寒潭清，烟光凝而暮山紫。俨骖马非于上路，访风景于崇阿；临帝子之长洲，得仙人之旧馆。层峦耸翠，上出重霄；飞阁流丹，下临无地。鹤汀凫渚，穷岛屿之萦回；桂殿兰宫，即冈峦之体势。 披绣闼，俯雕甍，山原旷其盈视，川泽纡其骇瞩。闾阎扑地，钟鸣鼎食之家；舸舰迷津，青雀黄龙之舳。虹销雨霁，彩彻区明。落霞与孤鹜齐飞，秋水共长天一色。渔舟唱晚，响穷彭蠡之滨；雁阵惊寒，声断衡阳之浦。 遥襟甫畅，逸兴遄飞。爽籁发而清风生，纤歌凝而白云遏。睢园绿竹，气凌彭泽之樽；邺水朱华，光照临川之笔。四美具，二难并。穷睇眄于中天，极娱游于暇日。天高地迥，觉宇宙之无穷；兴尽悲来，识盈虚之有数。望长安于日下，指吴会于云间。地势极而南溟深，天柱高而北辰远。关山难越，谁悲失路之人？萍水相逢，尽是他乡之客。怀帝阍而不见，奉宣室以何年？ 嗟乎！时运不齐，命途多舛。冯唐易老，李广难封。屈贾谊于长沙，非无圣主；窜梁鸿于海曲，岂乏明时。所赖君子见机，达人知命。老当益壮，宁移白首之心？穷且益坚，不坠青云之志。酌贪泉而觉爽，处涸辙以犹欢。北海虽赊，扶摇可接；东隅已逝，桑榆非晚。孟
高一化学必修一第四章单元测试题 一、选择题 1．(2010年东北师大附中期末考试)保护环境，就是关爱自己。下列说法中你认为不正确 ．．．的是 () A．空气质量日报的主要目的是树立人们环保意识，同时也让人们知道了二氧化硫、二氧化氮和可吸入颗粒物是大气主要污染物B．酸雨是指pH小于7的雨水 C．为了减少二氧化硫和二氧化氮的排放，工业废气排放到大气之前必须进行回收处理 D．居室污染是来自建筑，装饰和家具材料散发出的甲醛等有害气体 2．(2010年东北师大附中期末考试)下列物质为纯净物的是 () A．水泥B．水玻璃 C．氨水D．液氯 3．高层大气中的臭氧保护了人类生存的环境，其作用是 () A．消毒B．漂白 C．保温D．吸收紫外线 4．下列物质不会因见光而分解的是 () A．NaHCO3B．HNO3C．AgI D．HClO 5．下列实验能证明某无色气体为SO2的是 () ①能使澄清石灰水变浑浊 ②能使湿润的蓝色石蕊试纸变红 ③能使品红溶液褪色，加热后又显红色 ④能使溴水褪色，再滴加酸化的BaCl2溶液有白色沉淀产生 A．①②③④B．①③④ C．③④D．②③④ 6．下列说法正确的是 () ①正常雨水的pH为7.0，酸雨的pH小于7.0； ②严格执行机动车尾气排放标准有利于防止大气污染； ③使用二氧化硫或某些含硫化合物进行增白的食品会对人体健 康产生损害； ④使用氯气对自来水消毒过程中，生成的有机氯化物可能对人体 有害； ⑤食品厂产生的含丰富氮、磷营养素的废水可长期排向水库养 鱼。 A．①②③B．①④⑤ C．②③④D．③④⑤ 7．为了加速漂白粉的漂白作用，最好的方法是 () A．加入苛性钠溶液B．用水湿润 - 1 -
课文理解-Unit3 Reading阅读训练 一、单项选择题(根据课文内容选择正确答案） 1. Li Qiang was unsettled for the first few days because________. A. he was uncertain about what might happen during the future tour B. he hadn't decided whether to take the risk of experiencing the future tour C. he couldn't wait to take the future tour D. he became so excited whenever he thought of the future tour 答案：A 2. How did he go into the future? A. The “Future Tours” transported him into the future in a time capsule. B. His parents' company drove him there. C. He went into the future by himself. D. A guide led him there. 答案：A 3. Put the sentences in right order according to the text. a. I was transported into the future by a comfortable time capsule. b. I arrived at a strange-looking house and everything in it made me surprised. c. I won a time travel journey to the year AD 3008. d. I had my first try to master a hovering carriag e. A. cabd B. bdac C. dacb D. cadb 答案：D 4. Which of the following is true according to the text?
高二语文（必修5）第二单元测试卷（2011. 09） 一、文言选择题。（20分） 1．下列各句中没有 ．．通假字的一项是（） A．乃瞻衡宇B．穷睇眄于中天 C．零丁孤苦D．北冥有鱼，其名为鲲 2．下列各句中加点字没有 ．．古今异义的一项是（） A．阮籍猖狂 ．．不许 ．．B．欲苟顺私情，则告诉 C．腹犹果然 ．．蓬蒿之间 ．．D．翱翔 3．下列各句中加点字活用类型与其他三项不同 ．．的是是（） A．当敛裳宵．逝B．俊采星．驰 C．宾主尽东南之美．D．则刘病日．笃 4．下列各句中“之”字意义与用法不同 ．．于．其他三项的是（） A．老当益壮，宁移白首之．心B．悦亲戚之．情话 C．是臣尽节于陛下之．日长D．奚以之．九万里而南为 5．下列各项中对相同句式的分类正确的一项是（） ①海运则将徙于南冥②《齐谐》者，志怪者也。③彼且奚适也④杨意不逢 ⑤都督阎公之雅望⑥问征夫以前路⑦今臣亡国贱俘⑧而莫之夭阏者 A．①/②⑦/③④⑥/⑤⑧B．①⑥/②③⑦/④/⑤⑧ C．①⑥/②⑦/③④⑧/⑤D．①⑥/②⑦⑧/③④/⑤ 二、按课文内容默写。（26分） （1），知来者之可追。（8），物换星移几度秋。（2），鸟倦飞而知还。（9），命途多舛。（3），抚孤松而盘桓。（10）穷且益坚，。（4）登东皋以舒啸，。（11），桑榆非晚。（5）木欣欣以向荣，。（12）外无期功强近之亲，。（6），彩彻区明。（13），形影相吊。（7），秋水共长天一色。 三、文言文阅读题。（共44分） （一）阅读下面文言文语段，回答6—9题。（20分） 小知不及大知，小年不及大年。奚以知其然也？朝菌不知晦朔，蟪蛄不知春秋，此小年也。楚之南有冥灵者，以五百岁为春，五百岁为秋；上古有大椿者，以八千岁为春，八千岁为秋。而彭祖乃今以久特闻，众人匹之，不亦悲乎？汤之问棘也是已。“穷发之北有冥海者，天池也。有鱼焉，其广数千里，未有知其修者，其名曰鲲。有鸟焉，其名为鹏，背若太山，翼若垂天之云；抟扶摇羊角而上者九万里，绝云气，负青天，然后图南，且适南冥也。斥鴳笑之曰：‘彼且奚适也？我腾跃而上，不过数仞而下，翱翔蓬蒿之间，此亦飞之至也。而彼且奚适也？’”此小大之辩也。
高一化学第四章周测试题 一、选择题 1．保护环境，就是关爱自己。下列说法中你认为不正确 ．．．的是() A．空气质量日报的主要目的是树立人们环保意识，同时也让人们知道了二氧化硫、二氧化氮和可吸入颗粒物是大气主要污染物 B．酸雨是指pH小于7的雨水 C．为了减少二氧化硫和二氧化氮的排放，工业废气排放到大气之前必须进行回收处理D．居室污染是来自建筑，装饰和家具材料散发出的甲醛等有害气体 2．下列物质为纯净物的是() A．水泥B．水玻璃 C．氨水D．液氯 3. 为某玻璃上精美的花纹图案，雕刻此图案所用的刻蚀液为（） A. HF溶液B、HCL溶液 C、H2SO4溶液 D、HNO3溶液 4、下列离子方程式书写不正确的是（） A、盐酸与Na2SiO3溶液混合：SiO32-+2H+===H2SiO3 B、CL2和H2O反应：CL2+H2O===2H++CL-+CLO- C、NO2通入水中：H2O+3NO2===2H++2NO3-+NO D、浓盐酸和二氧化锰共热制CL2：MnO2+4H++2CL-===Mn2++CL2+2H2O 5、下列操作不能 ．．用于检验NH3的是（） A．气体使湿润的酚酞试液变红B．气体能使湿润的红色石蕊试纸变蓝C．气体与蘸有浓H2SO4的玻璃棒靠近D．气体与蘸有浓盐酸的玻璃棒靠近6．下列说法正确的是（） A．硅胶不能用作干燥剂 B．实验室盛装NaOH溶液的试剂瓶用玻璃塞 C．硅的化学性质很稳定，主要以游离态存在于自然界 D．硅酸钠的水溶液俗称水玻璃，可用于制备木材防火剂 7、有经验的阿姨在用氯气消毒过的自来水洗有色衣服之前，都会将自来水在日光下暴晒 一段时间，目的是（） A. 使水中的杂质沉淀B、使水中的HCLO分解 C、起到杀菌作用 D、增加水中O2的含量 8、右图是化学实验常用装置之一,若气体从右管进入，可用来收集的气体 是（） A．NO B．NO2 C．NH3 D．SO2 9、下列物质中不能与二氧化硅作用的是（） A.氢氧化钙B、苛性钠C、氧化钙D、水 10、下列氯化物中，既能由金属和氯气直接反应制得，又能由金属和盐酸反应制得的是（）
Unit 3 Life in the future A teaching design for oral practice Teaching Contents: Oral practice based on the reading passage on page17 to page18. 1. Orally, answer several questions according to the text. 2. Practise two topics:1) What do you suppose the future transportation will be like? 2) Imagine where the house will be built in the future ? 3. Listening and retelling. Teaching aims: 1. Inspire the students to imagine the future life. 2. Inspire the students to say something about the future transportation and housing. 3. To improve the students’ oral ability. Teaching Important & difficult point:: 1. Inspire the students to imagine the future life and use the proper expressions. 2. Enable the students to understand the meaning of the text, and say something according to the text. 3. To improve the students’ oral ability. Teaching methods: reading; asking and answering activity; pair or group work. Teaching Aids: A computer, multmedia. Teaching procedures: Step1: Lead-in . Enjoy a short video, cut from a science fiction film I, robot, to lead the students to imagine the future world. Step2: Fast Reading Ask the students to read the text quickly, then find out the main idea of the text, and answer several questions according to each paragraph. purpose: These questionts are simple questions, just to help the students get a brief acquaintance to the future world described in the text. Step3: Listening and retelling according to paragraph 4. Show some tips to help the students retell the sentences. Purpose: This exercise is a practice for oral test part C in NCEE.
第4章测试 （基础过关卷） （时间:6０分钟，满分:１00分） 一、选择题(共20小题,每小题3分,共６０分) 1．（原创）下图字母分别表示扩散、渗透作用和水分子的转运。对a、b、ｃ的判断正确的是（） A.a、b、ｃ依次表示扩散、渗透作用和水分子的转运 B．ａ、b、c依次表示渗透作用、扩散和水分子的转运 Ｃ.a、b、c依次表示水分子的转运、渗透作用和扩散 Ｄ．a、b、c依次表示扩散、水分子的转运和渗透作用 2．(原创）比较酒精分子和氧气的跨膜运输,下列有关说法正确的是( ） A.都属于自由扩散 Ｂ.都属于渗透作用 C.前者只属于自由扩散、后者只属于渗透作用 D．前者只属于渗透作用、后者只属于自由扩散 ３.如果把成熟的植物细胞看成渗透系统,则相当于半透膜的结构是（ ) A．细胞膜Ｂ．液泡膜Ｃ．叶绿体膜 D．原生质层 4．人体中，K+很容易穿过细胞膜,但许多细胞内部Ｋ+的浓度比外部K＋的浓度要高,如人的红细胞中K+的浓度比血浆中K+的浓度高30倍。这种物质进入细胞的方式属于（ ) A．自由扩散 B．协助扩散 C．被动运输 D．主动运输 ５．把数条5ｃm长的马铃薯条分别浸在蒸馏水和不同浓度的蔗糖溶液中，每隔一段时间测量马铃薯条的长度。下图显示马铃薯条在不同浓度溶液中长度改变的百分率。下列相关叙述错误的是（) Ａ.马铃薯条通过渗透吸(失)水改变其长度 Ｂ.在0.１0 ｇ·ｍL－1蔗糖溶液中马铃薯细胞质壁分离 Ｃ.马铃薯细胞液浓度相当于０.3０ g·mL－1的蔗糖溶液 D．在0.４0 g·mL－１蔗糖溶液中马铃薯细胞失水皱缩 6.将紫色洋葱在完全营养液中浸泡一段时间，撕取外表皮，先用浓度为0．３g·mL－1的蔗糖溶液处理。细胞发生质壁分离后，立即将外表皮放入蒸馏水中,直到细胞中的水分不再增加。在该实验中,蔗糖溶液处理前外表皮细胞液的浓度为甲,细胞中的水分不再增加时外表皮细胞液的浓度为乙，则甲、乙的关系,以及实验过程中水分进出细胞的方式为（） A.甲<乙,被动运输 B.甲＞乙,被动运输 C．甲＞乙，主动运输 D．甲=乙,主动运输 ７.一位科学家发现,当温度升高到一定程度时，细胞膜的厚度变小而面积增大,这是由于细胞膜的什么特性所决定的?（）
一、基础题（每题 3 分，共 45 分） 1、下列各组句子中加点的词语，解释有误的一项是（） A.乃瞻衡（通“横” ）宇策扶老（指拐杖）以流憩 B.逮（及，至）奉圣朝谁悲失路（比喻不得志）之人 C.夙遭闵凶（不幸）背负青天而莫之夭阏（阻塞）者 D.彩（色彩）彻区明是以区区（拳拳，形容自己的私情）不能废远 2、下列各组句子中，不全含有通假字的一组是（） A.云销雨霁，彩彻区明而刘夙婴疾病，常在床蓐 B.臣以险衅，夙遭闵凶所赖君子见机，达人知命 C.遥襟甫畅，逸兴遄飞汤之问棘也是已 D.适莽苍者，三餐而反此小大之辩也 3、下列各组句子中加点字的意义和用法完全相同的一组是（） A.引壶觞以自酌控蛮荆而引瓯越 B.请息交以绝游生物之以息相吹也 C.凡在故老，犹蒙矜育本图宦达，不矜名节 D.门虽设而常关此虽免乎行，犹有所待者也 4、下列各句中的加点词语与现代汉语意义相同的一项是（） A.生物之以息相吹也 B.千里逢迎，高朋满座 C.问征夫以前路 D.欲苟顺私情，则告诉不许 5、下列各句中句式特点与例句相同的一项是（） 例句：访风景于崇阿 A.遂见用于小邑 B.农人告余以春及 C.童子何知，躬逢胜饯 D.背负青天而莫之夭阏者 6、下列各句中加点字的用法与例句相同的一项是（） 例句：奚以之九万里而南为 A.乐琴书以消忧 B.雄州雾列，俊采星驰 C.目吴会于云间 D.臣具以表闻，辞不就职 7、对下列各句中的“以”字用法分类正确的一项是（） ①伏惟圣朝以孝治天下②但以刘日薄西山③谨拜表以闻④奚以之九万里而南为⑤以八千岁为春⑥而彭祖乃今以久特闻 ⑦御六气之辩，以游无穷者⑧耕植不足以自给⑨诸侯以惠爱为德⑩倚南窗以寄傲 A.①② / ③⑥ / ④⑦⑩ / ⑤⑨ / ⑧ B. ①④ / ②③ / ⑤⑦⑩ / ⑥⑧ / ⑨ C.①④ / ②⑥ / ③⑦⑩ / ⑤⑨ / ⑧ D. ①⑥ / ②④ / ③⑦⑩ / ⑤⑧ / ⑨ 8、下列各种说法中有误的一项是（） A.“归去来兮，田园将芜胡不归”是诗人陶渊明发自内心的呼喊，它表明 诗人归隐的原因就在于家里的田地无人收拾，同时也说明他是一个热爱劳 动，反对不劳而获的人。 B.“辞”是介于散文与诗歌之间的一种文体，《归去来兮辞》虽然采用了楚辞的体式，但作者能自出机杼，不受楚辞中怨愤、悲伤情调的影响，而表 现出一种淡远潇洒的意旨。 C.《滕王阁序》作为一篇赠序文，借登高之会感怀时事，慨叹身世，其中 “襟三江而带五湖，控蛮荆而引瓯越”一句集中概括了滕王阁所处的雄伟 地势。 D.庄子认为要达到“逍遥”之境，则应“无所待”，这反映了道家消极避世 的思想，同时也是作者既无法解决社会矛盾，又不愿与黑暗势力同流合污 的一种无可奈何的心理反映。 9、下列各句中加点词“焉”的理解与其它三项不同的一项是 A、置杯焉则胶，水浅而舟大也。 B、有鱼焉，其广数千 ．． 里，未有知其修者 C、有鸟焉，其名为鹏，背若泰山，翼若垂天之云 D、复驾言兮焉求 ．． 10、下列各句中加点词“而”的理解与其它三项不同的一项是
高中化学学习材料 第四章测试卷 时间：90分钟满分：100分 可能用到的相对原子质量：H 1 C 12 N 14 O 16 Na 23 S 32 Cl 35.5 Cu 64 Ba 137 第Ⅰ卷(选择题共48分) 一、选择题(本题包括16小题，每小题3分，共48分。每小题只有一个选项符合题意) 1．下列有关生活和生产中的化学知识描述正确的是( ) A．工业上用活性炭给红糖脱色和用SO2给纸浆脱色的原理相同 B．今年来我国大部分地区频繁出现的“雾霾”是对一种新分子的描述 C．工业上用澄清石灰水和氯气反应制漂白粉 D．Al(OH)3、NaHCO3都可以治疗胃酸过多 答案：D 解析：活性炭脱色是利用吸附原理，SO2脱色是因为其和有色物质化合生成不稳定的无色物质，A项错误；雾霾不是新分子，二氧化硫、氮氧化物和可吸入颗粒物是雾霾的主要组成成分，B项错误；工业上用消石灰(石灰乳)和氯气反应制漂白粉，C项错误。 2．2015年5月12日是我国第七个“防灾减灾日”，进行化学实验时，必须规范操作，强化安全意识，防止发生事故。下列做法或操作正确的是( ) A．对浓硫酸进行稀释时，将水倒入浓硫酸中 B．实验室制取氯气时，不用设计尾气吸收装置 C．不慎将酸溅到眼中，应立即用水冲洗，边洗边眨眼睛 D．切取6.0 g Na进行Na与水的反应 答案：C 解析：稀释浓硫酸应该将浓硫酸倒入水中，A项错误；氯气有毒，实验室制备氯气应该进行尾气处理，B项错误；进行Na和水的反应时，应该切取黄豆粒大小的Na与水发生反应，6.0 g Na的质量过大，反应时容易发生危险，D项错误。
3．我国科学家成功研制SiO2超分子纳米管，其微观结构如图，下列叙述不正确 ．．．的是( ) A．该超分子性质稳定，不与任何酸发生反应 B．SiO2是酸性氧化物 C．SiO2在工业上可用于制造光导纤维 D．SiO2与碱的反应是非氧化还原反应 答案：A 解析：SiO2超分子纳米管由SiO2组成，SiO2能与氢氟酸发生反应，A项错误。 4．教材中的每一幅插图都承载着相应的教学功能，学生通过对插图的观察学习可以锻炼和提高自我学习能力、信息整合能力。下列插图中的操作不合理的是( ) 答案：B 解析：钾元素的焰色反应应该透过蓝色钴玻璃观察。 5．下列各组离子能大量共存的是( ) A．Na＋、Cu2＋、NO－3、SO2－4 B．H＋、K＋、HCO－3、SO2－3 C．Ba2＋、Mg2＋、CO2－3、Cl－ D．Fe3＋、NH＋4、OH－、Cl－ 答案：A 解析：H＋与HCO－3、SO2－3会反应，B项不符；Ba2＋、Mg2＋与CO2－3会反应，C项不符；Fe3＋、
重点高中生物必修一第四章测试卷
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…○…………外…………○…………装…………○…………订…………○…………学 校 : _ _ _ _ _ _ _ _ _ _ _ 姓 名 ： _ _ _ _ _ _ __ _ _ _ 班 级 ： _ _ _ _ __ _ _ _ _ _ 考 号 ：___________ …○…………内…………○…………装…………○…………订…………○…………绝密★启用前 2015-2016学年度邵阳县七中生物测试卷 第四章 考试范围：必修一；考试时间：45分钟；命题人：林西陆 题号 一 二 总分 得分 注意事项： 1．答题前填写好自己的姓名、班级、考号等信息 2．请将答案正确填写在答题卡上 第I 卷（选择题） 评卷人 得分 一、选择题（共48分） 1．浸入１mol/L KNO 3溶液中的洋葱表皮细胞，会产生质壁分离和质壁分离自动复原的现象。下列有关说法，错误的是（ ） A ．必须用高倍显微镜才能观察到质壁分离和复原现象 B ．细胞的质壁分离和复原，体现了细胞膜的流动性 C ．与质壁分离自动复原有关的两种主要细胞器是液泡和线粒体 D ．质壁分离和复原实验表明原生质层的伸缩性大于细胞壁的伸缩性 2．某实验小组为了探究细胞膜的通透性，将小鼠肝细胞在体外培养一段时间后，检测培养液中的氨基酸、葡萄糖和尿素含量，发现它们的含量发生了明显的变化（如图），以下分析合理的是
…○…………外…………○…………装…………○…………订…………○…………学 校 : _ _ _ _ _ _ _ _ _ _ _ 姓 名 ： _ _ _ _ _ _ _ _ _ _ _ 班 级 ： _ _ _ _ __ _ _ _ _ _ 考 号 ：___________ …○…………内…………○…………装…………○…………订…………○………… A ．培养液中葡萄糖和氨基酸含量降低，这肯定是协助扩散的结果 B ．培养液中尿素含量升高，推测其是细胞代谢的产物，且能过膜 C ．氨基酸和葡萄糖都能进入细胞，说明细胞膜不具有选择透过性 D ．转氨酶在肝细胞内，正常情况下不会排出胞外，若在细胞培养液中检测到该类酶，则是细胞胞吐作用排出的 3．某哺乳动物神经细胞内外的K ＋和Na ＋浓度见下表。下列属于主动运输的是 细胞内浓度（mmol·L －1） 细胞外浓度（mmol·L －1） K ＋ 140．0 3．0 Na ＋ 18．0 145．0 A ．K ＋经钾离子通道排出细胞 B ．K ＋与有关载体蛋白结合排出细胞 C ．Na ＋经钠离子通道排出细胞 D ．Na ＋与有关载体蛋白结合排出细胞 4． 肺泡内氧气进入组织细胞需经过几层磷脂双分子层（ ） A ．11层 B.18层 C.7层 D ．9层 5．葡萄糖分子以协助扩散方式跨膜运输的速率比自由扩散大105倍，这是因为（ ） A ．分子顺浓度梯度转运 B ．有载体蛋白协助 C ．分子通过亲水性通道跨膜 D ．细胞呼吸提供能量 6．下列生理过程中，物质通过细胞膜时不需要载体的是（ ） A ．Ca 2+进入根毛细胞 B ．氧气进入肺泡细胞 C ．K +进入小肠上皮细胞 D ．葡萄糖进入心肌细胞 7．将洋葱表皮放入一定浓度的硝酸钾溶液中，该表皮的细胞便发生质壁分离，不久这些细胞又逐渐发生质壁分离复原。其原因是（ ）