1、课时跟踪检测30(B5Unit 3).单项填空1Writing has _ much of my spare time, but it has given me a great deal of pleasure.Ataken offBtaken downCtaken away Dtaken up答案与解析：D句意：写作占用了我的大部分业余时间，但是我从中得到了极大的乐趣。take up“占据，占用”，符合题意。take off“起飞；脱下”；take down“记下；拿下”；take away“带走；拿走”。2The mistake I made last week has been a ti
2、mely reminder of the need for _ care.Aequal BconstantCaccurate Dclear答案与解析：B句意：我上周所犯的错误适时地提醒我们要注意时刻谨慎。constant“经常的；不断的”，符合题意。equal“平等的”；accurate“准确的，精确的”；clear“清楚的；明确的”。3She started studying medicine at college, but _ to Business Studies in her second year.Atransformed BskippedCadjusted Dswitched答案与
3、解析：D句意：她在大学一开始学习医学，第二年转修商业学。switch“转换，变换”，多与to搭配。transform“改变，转化”；skip“跳来跳去，蹦蹦跳跳”；adjust“调整”。4The new teacher made a good _ on the students by her rich knowledge and humourous talk.Afeeling BeffectCimpression Dsense答案与解析：C句意：这位新来的老师以渊博的知识和幽默的谈吐给学生留下很好的印象。make an impression on sb.为固定短语，意为“给某人留下印象”。5W
4、hat do you know about Darwin after he returned from the trip by sea?Well, he got married and _ down to live in London.Asolved BsettledCstayed Dleft答案与解析：B句意：你知道达尔文乘船旅行回来后怎么样了吗？哦，他结婚后在伦敦定居了。settle down“定居；安定”。solve“解决”；stay“短暂停留”；leave“离开”。6How hungry the poor little boy was! He stared at the cakes i
5、n the shop window with _ eyes.Aanxious BnervousCdesirable Dgreedy答案与解析：D句意：这个可怜的男孩太饿了！他用贪婪的目光盯着商店橱窗里的蛋糕。greedy“贪婪的”，符合人饥饿时对食物的渴求。anxious“焦急的；忧虑的”；nervous“紧张的”；desirable“令人想要的”。7A passenger train _ about 1,500 people fell into the river when the bridge collapsed.A. carrying B. carriedC. to be carried
6、 D. to carry答案与解析：A考查非谓语动词。非谓语动词的逻辑主语train和carry之间存在主谓关系，故用现在分词作定语，修饰train。句意：一列载有约1,500名旅客的火车在桥梁垮塌的时候跌入了河中。8Her speech made a great impression _ the audience.Ain BonCat Dof答案与解析：B句意：她的演说给听众留下了极其深刻的印象。impression常与介词on搭配，即make an impression on sb.“给某人留下印象”。9Do you have any _ experience of this type o
7、f work?I am sorry, but I have just graduated from college.Aprevious BpopularCcurrent Dlast答案与解析：A句意：你以前做过这种工作吗？对不起，我刚从大学毕业。previous“先前的”；popular“流行的”；current“目前的”；last“最后的”。10_ to use in January, 2010, the road has solved the longstanding problem of traffic jams of this area.APut BPuttingCHaving put
8、 DBeing put答案与解析：A句意：2010年1月投入使用之后，这条公路已经解决了本地区存在已久的堵车问题。put. to use“将投入使用”。主句的主语是the road，故用过去分词形式作状语。可理解为：Since it was put to use in January, 2010, the road.。11Ive applied for the job but Im not very _ about my chance of getting it.Aoptimistic BcomfortableCtiresome Dsuccessful答案与解析：A句意：我申请了这份工作，但我
9、对获取这份工作的机会持不太乐观的态度。be optimistic about意为“对持乐观态度”。comfortable“舒服的”；tiresome“令人烦的”；successful“成功的”。12We must not _ the good traditions passed down from generation to generation.Acatch sight of Blose the sight ofClose sight of Dcatch the sight of答案与解析：C句意：我们决不能对世代相传的优良传统视而不见。lose sight of“忽视”。13If you
10、want to slow down, you must _ harder on the brakes.Atake BpressCsweep Dcarry答案与解析：B句意：如果你想减速，你必须用劲踩刹车。press“按，施加压力”，符合语境。14He will join us _ the condition that we divide all the profits equally.Ain BforCon Dto答案与解析：C句意：只要我们决定平均分配利润，他就会加入到我们当中。on the condition that是固定短语，表示“条件是”。15Though _ money, his
11、parents managed to send him to a key university.Alacked Blacking ofClacking Dlacked in答案与解析：C句意：虽然缺钱，但他父母还是设法把他送进了一所重点大学。lack为及物动词，表示“缺乏”，主句主语与lack之间是主动关系，故用现在分词形式。.阅读理解When people lose legs after accidents or illnesses, emergency care and artificial limbs(假肢) often allow them to walk again. Newts (
12、蝾螈)in the same situation, on the other hand, can grow limbs back on their own! Scientists have known for a long time that certain animals can regrow limbs, but they havent quite figured out how these creatures do it. Researchers have now come up with some new ideas. Their work may give people the ab
13、ility to regrow lost limbs. The researchers started with two simple experiments: when you cut a newts leg at the ankle, only the foot grows back; when you cut off a leg at the very end, the whole leg grows back. In both cases, the regrowth begins with stem cells. Stem cells can develop into nearly a
14、ny type of cell in the body. How do a newts stem cells know when to grow only a foot and when to regrow a whole leg? This question relates to another mystery. In newts, a cutoff leg will grow back only if the nerve bundle(神经束) in it also grows back, but if something prevents the nerve bundle from gr
15、owing the stem cells at the wound wont regrow a new leg. In its study, a British team focused on a protein called nAG. When the team prevented nerves in a limb from growing, but added the nAG protein to stem cells in the limb, the limb still regrew. That protein seems to guide limb regrowth. People
16、have proteins that are similar to nAG. Further research into these_materials may someday help human limbs recover by themselves.16. A newt will regrow its leg if_.A. its ankle was cut off but the nerve bundle was goodB. its leg was cut off and the nerve bundle stopped growingC. its leg was cut off a
17、nd the nerve bundle could grow backD. its ankle and the nerve bundle could grow back17. What do the underlined words “these materials” refer to?A. Nerve bundles and proteins. B. Proteins similar to nAG.C. Stem cells and proteins. D. Stem cells and nerve bundles.18. The first sentence of the passage_
18、.A. acts as a leadinB. shows where researchers got their new ideasC. states the authors opinionD. describes the result of researchers studies19. Whats the purpose of studying the newts?A. To find out whether newts would regrow after being cutting off.B. To find out the similarity between human and n
19、ewts.C. To find out what is nAG.D. To find a way of helping human limbs recover by themselves.答案与解析：16C根据文章倒数第二段第二句“a cutoff leg will grow back only if the nerve bundle in it also grows back”可知被割掉的肢体重新长出来的条件是其中的神经束也能长回来。17B根据文章最后一段中的“People have proteins that are similar to.”可知对这些类似于蛋白质的研究，科学家有一天能够帮
20、助人类的肢体自动恢复。18A本文主要介绍对蝾螈肢体再生的研究，因此文章的第一句起引入话题的作用。19D从文章最后一句可以看出科学家对蝾螈研究的最终目的就是找到帮助人类肢体自动恢复的方法。.七选五Students will need to use all of their skills in order to understand the reading selections in Readers Choice. _20_ These selections provide practice on employing different reading skills to get the mess
21、age of the writer. They also give students practice in four basic reading skills：skimming, scanning, reading for thorough comprehension, and critical reading. Skimming involves reading quickly through a text to get an overall idea of its contents. This kind of rapid reading is suitable when you are
22、trying to decide if careful reading is desirable or _21_Like skimming, scanning is also quick reading. However, in this case the search is more concentrated. _22_ When you read to find a particular date or number, you are scanning. Reading for thorough comprehension is carefully reading in order to
23、understand the total meaning of the passage. At this level of comprehension the reader is able to summarize the authors ideas _23_.Critical reading demands that a reader makes judgments about what he or she reads. This kind of reading requires posting and answering questions such as “_24_”， “Do I sh
24、are the authors point of view？” and “Am I convinced by the authors arguments and evidence?A. Does my own experience support that of the author?B. Readers Choice is one of the most popular magazines in the world.C. but has not yet made a critical evaluation of those ideas.D. The book contains many ty
25、pes of selections on a wide variety of topics.E. To scan is to read quickly in order to find out specific information.F. Do I know about the author?G. when there is no time to read something carefully.答案：20.D21.G22.E23.C24.A.短文改错As student of your age, I understand your situation. That you are facin
26、g is common among teenagers. However, it should be wise not to do anything may hurt her feelings. Here are a few suggestion. First, its advisable to talk most with your mom. Heart to heart talks helped you understand each other better. There are also opportunities to let her knowing your ideas and a
27、ttitudes toward many things. Second, you should learn to do our own things well, proving to your mom that you are already a “grownup”. Its even the better whether you share more in the housework, such as cleaning, washing and cooking.答案：Asa student of your age, I understand your situation. ThatWhat
28、you are facing is common among teenagers. However, it should be wise not to do anythingthat may hurt her feelings. Here are a few suggestionsuggestions. First, its advisable to talk mostmore with your mom. Heart to heart talks helpedhelp you understand each other better. There are also opportunities to let her knowingknow your ideas and attitudes toward many things. Second, you should learn to do ouryour own things well, proving to your mom that you are already a “grownup”. Its even the better whetherif you share more in the housework, such as cleaning, washing and cooking.
