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1、课时作业（四）.单词拼写1. The brothers _(不同)widely in their tastes.2. Id like to come, too, if you have no _(反对).3. Scientists are hoping for a _(突破)in the search for a cure for cancer.4. Radio is an important communication _(媒介 )in many countries.5. They spent about a year _(总共)touring the four countries.6.Ma
2、ry was disappointed to see her homework returned with a mass of _ (改正)in red ink.7. Parents are responsible for giving their children _(道德)guidance.8. The question is quite s_, while that one is much more complicated.9. Smoking is f_ in public places.10. He always managed to _(得到)what he wanted.答案 1
3、. differ 2. objection 3. breakthrough 4. medium 5. altogether 6. correction 7. moral 8. straightforward 9. forbidden 10. obtain.单项填空1. In the end, the scientists hard work and patience _ with a breakthrough last year.A. paid back B. paid offC. paid for D. paid up答案 B解析 pay up“付清” ；pay off“得到好结果；取得成功
4、 ”；pay back“还钱；偿还” ；pay for“支付” 。结合语境可知 B 项为最佳选项。2. My brother suggested he and I be taken to an amusement park this weekend, and we were glad to know that our busy parents didnt _ to the plan.A. object B. referC. listen D. agree答案 A解析 句意：我哥哥建议这个周末带我们去游乐园；我们很高兴，因为忙碌的父母没有反对这个计划。object to“反对” ；refer t
5、o“指；涉及；提到” ；listen to“听” ；agree to“同意” 。3. As we all know, humans differ from other animals _ their ability to speak.A. on B. fromC. by D. in答案 D解析 句中表示的是“ 人类与其它动物在语言能力上有差异” ，故用 differ in .，表示“在方面不同” 。4. I am _ your suggestion _ we should spend more time on this project.A. in favor of; which B. in h
6、onor of; thatC. in favor of; that D. in honor of; which答案 C解析 句意：我很赞成你的建议那就是我们应该在这个工程上花费更多的时间。in favor of“赞成” ；in honor of “向表示敬意；为纪念” 。第二个空为that 引导的同位语从句。5. Clinical evidence began to _, suggesting that the new drugs had a wider range of useful activities than had been predicted from experiments in
7、 animals.A. operate B. strengthenC. approve D. accumulate答案 D解析 句意：临床证据在不断增加，表明这种新药的用途比先前根据动物实验所预测的用途更广泛。operate “操作” ；strengthen“加强；强化” ；approve “赞成；同意” ；accumulate “积累；聚积” 。6. As is well known, everyone is forbidden _ in buses, regardless of what they are.A. to smoke B. smokingC. to be smoking D.
8、to smoking答案 A解析 句意：众所周知，无论是谁，在公共汽车上都是禁止吸烟的。这里考查的是 forbid sb. to do sth. 的被动语态。7. The new chairman was quite familiar with the _ for conducting a meeting.A. procedure B. problemC. question D. people答案 A解析 procedure“程序；流程” ，符合题意。 problem“问题；毛病” ；question“问题” ；people“人们” 。8. The way he did it was diff
9、erent _ we were used to.A. in which B. in whatC. from what D. from which答案 C解析 考查介词的选择和宾语从句。句意：他做这件事的方式和我们以前所习惯的方式不同。 “与不同”用 be different from .结构，what 引导宾语从句，并在从句中作宾语。9. If you are always _ by such kind of failures, you will never succeed.A. turned down B. cast downC. made down D. put down答案 B解析 句意
10、：如果你一直因为这种失败而沮丧，你将永远不会成功。 cast down“使沮丧；使不愉快” ；turn down“关小(声音等 )；拒绝” ；put down“记下；写下” 。10. To our joy, there are so many _ in science and technology all over the world in recent years.A. discovery B. breakthroughsC. findings D. invention答案 B解析 discovery“发现” ；invention“发明” ，都符合句意，但须用复数形式。finding 有两种
11、含义，一是指别人丢掉后的“发现物；拾得物” ；二是其复数形式还有一特别含义，指“(委员会等的)调查结果；报告” ，不合句意。breakthrough“突破” 。.阅读理解Everyone becomes a little more forgetful as they get older, but mens minds decline more than womens, according to the results of a worldwide survey.Certain differences seem to be inherent in male and female brains:
12、men are better at dealing with mental images useful in mathematical reasoning and spatial (三维空间) skills, while women tend to excel (擅长) at recalling information from their brains files helpful with language skills and remembering the locations of objects.Many studies have looked for a connection bet
13、ween sex and the amount of mental decline people experience as they age, but the results have been mixed.Some studies found more age-related decline in men than in women, while others saw the opposite or even no relationship at all between sex and mental decline. Those results could be improper beca
14、use the studies involved older people, and women live longer than men. The men tested are the survivors, “so theyre the ones that may not have shown such cognitive (认知的) decline,” said study team leader Elizabeth of the University of Warwick in England.People surveyed completed four tasks that teste
15、d sex-related cognitive skills：matching an object to its rotated (旋转的) form, matching lines shown from the same angle, typing as many words in a particular category as possible in the given time, e.g. “objects usually colored gray”, and recalling the location of objects in a line drawing. The first two were tasks at
