1、【 精品教育资源文库 】 Unit 4 Helping people around the world 一、阅读理解。 If you think that running marathons will help you live a long and healthy life，new research may come as a shock. According to a recent scientific study， people who do a very strenuous workout are as likely to die as people who do no exerci
2、se at all. Scientists in Denmark have been studying over 1， 000 joggers and non-joggers for 12 years. The death rates from the sample group indicate that people who jog at a moderate pace two or three times a week for less than two and a half hours in total are least likely to die. The best speed to
3、 jog at was found to be about 5 miles per hour. The research suggests that people who jog more than three times a week or at higher speeds of over 7 mph die at the same rate as non-joggers. The scientists think that this is because strenuous exercise causes structural changes to the heart and arteri
4、es(动脉 ).Over time， this can cause serious injuries. Peter Schnohr， a researcher in Copenhagen， said， “If your goal is to decrease risk of death and improve life expectancy， jogging a few times a week at a moderate pace is a good strategy. Anything more is not just unnecessary， and it may be harmful.
5、” The implications of this are that moderate forms of exercise such as tai chi，yoga and brisk walking may be better for us than “iron man” events ， triathlons and long-distance running and cycling. According to Jacob Louis Marott， another researcher involved in the study， “You dont actually have to
6、do that much to have a good impact on your health. And perhaps you shouldnt actually do too much”. 1.The underlined word “strenuous” in Paragraph l is closest in meaning to“_”. A. hard B. regular C. practical D. flexible 2.The author presents some figures in Paragraph 2 to _. A. suggest giving up jo
7、gging B. show risks of doing sports C. provide supportive evidence D. introduce the research process 3.According to the scientists， why is too much exercise harmful？ 【 精品教育资源文库 】 A. It may injure the heart and arteries. B. It can make the body tired out. C. It will bring much pressure. D. It consum
8、es too much energy. 4.What can be inferred from the text? A. No exercise at all is the best choice. B. More exercise means a healthier life. C. Marathons runners are least likely to die. D. Proper exercise contributes to good health. 【文章大意】本文主要讲述了做运动过多或过少都对身体有害，只有做适量的运动才对身体有益。 1.A 【解析】考查词义推测。 hard 耗
9、费体力的； regular 有规律的； practical 实际的； flexible灵活的。由第一段最后一句 “According to a recent scientific study ， people who do a very strenuous workout are as likely to die as people who do no exercise at all.”可知，一点不做运动的人和非常艰苦锻炼的人都极有可能死，故应选 A。 3.A 【解析】考查细节理解。由第二段倒数第二句 “The scientists think that this is because str
10、enuous exercise causes structural changes to the heart and arteries(动脉 ).”可知，做过多的运动有害是因为它可能伤害心脏和动脉，故应选 A。 4.D 【解析】考查推理判断。根据第三段可知 ，做运动过多或过少都对身体有害，只有做适量的运动才对身体有益，故应选 D。 二、单项填空 1.Nowadays, few people develop the habit of keeping a supply of oil-lamps in the house in case of power _. A. failure B. absen
11、ce C. lack D. drop 【答案】 C 【解析】 句意： 如今， 很少有人为了防能源短缺， 养成保存油灯供应的习惯。 lack 缺少； failure 失败； absence 【 精品教育资源文库 】 缺席； drop 落下。故 C 正确。 2.Fitness is important in sport, but of at least _ importance are skills. A. fair B. reasonable C. equal D. proper 【答案】 C 【解析】 句意： 强健的身体在体育运动中很重要， 但是至少同样重要的还有体育技能。 fair 公平的
12、； reasonable 合理的； equal 相等的，平等的； proper 合适的。 3.Most of the people present at the meeting think poorly of the proposal, which they think will _ the worsening of the environment. A. adapt to B. refer to C. subscribe to D. contribute to 【答案】 D 【解析】句意：大多数与会者都不看好这一提议，他们认为它会导致环境的恶化。 contribute to“导致， 是?的
13、原因之一”，符合句意。 adapt to 适应； refer to 参与，指的是； subscribe to 订阅，赞同。 4.A great part of the information I have was _ by looking up something and finding something else on the way. A. requested B. acquired C. exchanged D. presented 【答案】 B 【解析】 requested 要求； acquired 获得； exchanged 交换； presented 提出，提供。句意：我的大部分
14、知识 都是这样获得的：在寻找某个资料时意外的获得了另外的资料。 5.Chinese president Xi Jinpin said that China attaches great importance to _ relations with the United Kingdom, and that deepening the China-U.K. relationship is the fundamental _ of both countries and people. 【 精品教育资源文库 】 A. strengthening; benefits B. extending; pro
15、fits C. expanding; interests D. developing; aspects 【答案】 C 【解析】句意：中国国家主席习近平说中国注重发展与英国的关系，同时加深中英关系也是两国及其人 们的根本利益所在。第一空： strengthen 加强； extend 延伸， expand 扩张，发展； develop 发展。 第二空上： benefits 好处，益处； profits 利润； interests 利益； aspects 方面。 6. Must I finish the report tonight? Its not _. You can do it next we
16、ek. A. important B. serious C. urgent D. nervous 【答案】 C 【解析】 important 重要的； serious 严肃的，认真的； urgent 紧急的； nervous 紧张的。句意：我必须今晚 完成报告吗？不着 急。你可以下周做。 7.As there is less coal and oil, scientists are exploring new ways of making use of _ energy, such as sunlight, wind, and water for power and fuel. A. prim
17、ary B. alternative C. instant D. unique 【答案】 B 【解析】 primary 初级的； alternative 可供选择的； instant 立刻的； unique 独特的。句意：由于煤和油较 少，科学家们正在探索更好的办法来利用可供选择的能源，如太阳能，风和风能来发电。 8.Every possible means _, but it seems that nothing will prevent the situation from getting worse. A. has tried B. have tried C. has been trie
18、d D. have been tried 【答案】 C 【解析】 every possible means 每一种可能的方法，谓语动词应用单数形式，且 means 与 try 之间为动宾关 【 精品教育资源文库 】 系，故 C 项正确。句意：每一种可能的方法都被试过了，但好像没有什么能阻止这种状况的每 况愈下。 9.Now that the banks are back on their feet, we expect extraordinary _ from them to help rebuild the economy. A. commitment B. appointment C.
19、instrument D. requirement 【答案】 A 【解析】 commitment 承诺， 许诺； appointment 任命， 约会， 职务， 职位； instrument 仪器， 乐器； requirement 要求。句意：现在，银行业恢复了往日的神采，我们希望银行能够做出重大承诺来帮助重振国 家的经济。 10.Many people have applied for a job with our company, but we only have one or two _ positions at the moment. A. empty B. vacant C. per
20、manent D. adequate 【答案】 B 【解析】考查形容词。 empty 空的，空洞的，空闲的，无效的； vacant 空闲的，空虚的，空缺的； permanent 永久的； adequate 充分的。句意：许多人申请我们公司的岗位，但是我们目前仅仅有一两个空缺 的岗位。故答案选 B。 11.In our childhood, we were often _ by Grandma to pay attention to our table manners. A. demanded B. reminded C. allowed D. hoped 【答案】 B 【解析】 demand
21、命令； remind 提醒； allow 允许； hope 希望。句意：在我们小时候，奶奶经常提醒我们 【 精品教育资源文库 】 注意餐桌礼仪。 12.It was foolish of him to _ his notes while taking such an easy test, and as a result, he got punished. A. refer to B. speak of C. cheat in D. take out 【答案】 A 【解析】 refer to 提到，谈到，查阅，参考； speak of 谈到，讲到； take out 清除，获取，把?带出去， 邀请 (某人 )外出。句意：对他来说在这样简单的考试中看笔记本真是愚蠢。结果他受到了惩罚。 13.When I was in high school, Dad retired and _ a food stand on the street near my school. A. took up B. set up C. brought up D. picked up 【答案】 B 【解析】 set up 建立，搭建。 take up 从
