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1、Unit 1 Friendship李仕才一、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 exercise at all.Scientists in Denmark hav
2、e 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 jog at was found to be about 5 miles
3、 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 arteries(动脉).Over time，this can cause serio
4、us 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.”The implications of this are that moderate f
5、orms 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 do that much to have a good impact on your health.
6、 And perhaps you shouldnt actually do too much”.1.The underlined word “strenuous” in Paragraph l is closest in meaning to“_”.A. hardB. regularC. practicalD. flexible2.The author presents some figures in Paragraph 2 to _.A. suggest giving up joggingB. show risks of doing sportsC. provide supportive e
7、videnceD. introduce the research process3.According to the scientists，why is too much exercise harmful？A. It may injure the heart and arteries.B. It can make the body tired out.C. It will bring much pressure.D. It consumes too much energy.4.What can be inferred from the text?A. No exercise at all is
8、 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
9、，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 strenuous 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
10、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、单句语法填空1It was when I got back to my apartment _I first came across my new neighbors.答案：that本句是强调句。被强调部分是时间状语，故应填that。2Lily cant fall asleep, extremely _ (concern) about the result of her maths test.答案：concerned短语be concerned about . “担忧，
11、挂念”，本句中逗号后没有连词，故逗号后的部分为状语，此处应用形容词短语作伴随状语。3Its no pleasure _ (go) camping on such a foggy day.答案：goingIts no pleasure doing sth. “做某事没有乐趣”。4The little boy is clever enough to have no trouble _ (find) his house without others help.答案：findinghave no trouble doing sth. “做某事没困难”。5There was no _ (agree),
12、and the proposal was accepted.答案：disagreement由形容词no可知，本空应填名词，再由后一分句“建议被接受了”可知，应填名词disagreement。6He happened _ (know) the secret, so I neednt tell him.答案：to have knownhappen to do sth. “碰巧做某事”，再由后一并列分句“没有必要告诉他”可知，前一分句谓语部分应用不定式的完成式。7He set his alarm clock before going to bed in order _ (get) up earlie
13、r than usual the next morning.答案：to getin order to do sth. “为了做某事”。8Several weeks had gone by _ they knew the painting was missing.答案：beforebefore引导的时间状语从句，表示“在以前”，从句常用一般过去时，主句用过去完成时。9While _ (wait) for the bus by the roadside, I found a wallet on the ground.答案：waiting时间状语从句的主语和主句主语一致，且从句谓语部分含有be动词，
14、故从句中省略主语和be动词，填waiting。while waiting可看作是while I was waiting的省略。10The windows havent been cleaned for at least a year and are _ (dust) now.答案：dustydusty “脏的，布满尘土的”，是形容词，在此处作表语。三、完形填空。Something quite tragic(悲剧的)happened in our home.It had a _1_ effect on our lives.It _2_ the way we relax and even wher
15、e we sit.There was no fire or flood.we _3_ our WiFi service，for over a week.I was raised in the preWiFi era，so I was relatively _4_ to the situation.My children，_5_，did not have this training.When given the news that there was no WiFi in the house，their first _6_ was：“But，what will we do？”Fortunately，the TV still worked，although the children were _7_ to find that it had only 70 channels.For the children，a(n) _8_ challenge was homework，most of which is now given online.The lack of broadband seemed to provide a new _
