1、课时作业17.单句语法填空1I hurt my leg while playing (play) football.2It was owing to luck rather than judgement that the driver succeeded in avoiding an accident.3The ancient church was almost burnt (burn) out before the firefighters managed to control the big fire.4The old lady was terrified at the thought o
2、f the terrifying experience in the forest. (terrify)5The heros deeds contrast sharply with those who only care about themselves.6Helen didnt want to get out of bed, for fear of waking her husband.7Just now he breathed (breath) with difficulty after a longtime running.8John FKennedy, murdered (murder
3、) in 1963, was top of the list of a survey with an 85 percent approval rating.9He refuses to_recognize (recognize) the fact that some of his classmates are catching up with him.10He never gave up chasing (chase) after his dream in his youth.完成句子1While waiting for the bus,_he met one of his old class
4、mates by chance.在等公共汽车时，他偶然遇到了一位老同学。2I threw myself on the bed and fell asleep immediately.我倒在床上立刻就睡着了。3All the candles were burnt out after a whole night.整整一夜之后，所有的蜡烛都烧完了。4It is generally agreed that we should eat less fat and more vegetables.人们普遍认为应该少吃肥肉多吃蔬菜。5In contrast with/to me,_Tom is more di
5、ligent than I. But by contrast,_Mary is much more diligent than Tom.与我相比，汤姆比我勤奋。但相比之下，玛丽比汤姆勤奋得多。.串点成篇微表达李平曾是个工作狂，过去常常工作到很晚。因为太累，他常常和衣而睡(throw oneself on)。他的妻子担心(fear for)他的健康要求他早点睡觉，但他拒绝(refuse)了。另外，他的朋友经常告诉他如果他不停止这么卖力工作的话，他会累垮(burn oneself out)的，但他不予理睬。一天他病了，被紧急送往(be rushed on)医院。医生告诉他，他的病源于工作太卖力并且
6、告诉他睡眠要充足。从那之后，李平的确改变了许多，现在他很健康。Li_Ping_was_a_workaholic_and_he_used_to_work_late._He_often_threw_himself_on_the_bed_in_his_clothes_because_he_was_too_tired._His_wife_feared_for_his_health_and_asked_him_to_go_to_bed_early,_but_he_refused._Besides,_his_friends_often_told_him_that_if_he_didnt_stop_work
7、ing_so_hard,_he_would_burn_himself_out._But_he_ignored_what_they_said._One_day_he_fell_ill_and_was_rushed_to_the_hospital._The_doctor_told_him_his_illness_resulted_from_his_hard_working_and_told_him_to_have_enough_sleep._After_that,_Li_Ping_did_change_a_lot_and_now_he_is_very_healthy.阅读理解There are m
8、any ways in which human cloning is expected to benefit humans.Dr Richard Seed, one of the leading supporters of human cloning technology, suggests that it may someday be possible to completely change the aging process because of what we learn from cloning.Scientists believe that they may be able to
9、treat heart attack victims by cloning their healthy heart cells and injecting them into the areas of the heart that have been damaged. Heart disease is the number one killer in the US and several other industrialised countries.There has been a breakthrough with human stem cells. Embryonic stem cells
10、 can be grown to produce organs to repair or replace damaged ones. Skin for burn victims, brain cells for the brain damaged, hearts, lungs, and kidneys could be produced. By combining this technology with human cloning technology, it may be possible to produce needed organs for suffering people that
11、 will be free of rejection by their immune systems. Conditions such as Alzheimers disease, Parkinsons disease, heart failure, and other problems can be cured if human cloning and its technology are not banned.Though current treatments for infertility (不生育) are getting a fair amount of publicity in t
12、he news, they, in terms of percentages, are not very successful. Some data shows that current infertility treatments are less than 10 percent successful. Couples go through physically and emotionally painful procedures for a small chance of having children. Many couples run out of time and money wit
13、hout successfully having children. Human cloning could make it possible for many more infertile couples to have children than ever before possible.本文作者从几个方面介绍了克隆人技术给人类带来了好处。1According to Dr Richard Seed, we can use cloning technology to _.Aproduce more animalsBmake people live happilyCmake people lo
14、ok youngerDcure people of many diseases答案：C解析：推理判断题。根据第二段中的“to completely change the aging process”可知，Richard Seed认为克隆技术可以彻底改变变老的进程。因此推知，克隆技术可以使人们看上去更年轻。2We can learn from the passage that _.Acloning has already been used to treat heart diseaseBwe can treat a mans heart disease by cloning heartsCmos
15、t people in industrial countries suffer from heart diseaseDmore people die of heart disease than of other diseases in the US答案：D解析：细节理解题。根据第三段最后一句可知，心脏病是美国和其他工业化国家的头号杀手，因此在美国死于心脏病的人要比死于其他疾病的人多。3What is the main idea of the last paragraph?AWith cloning infertile couples could have children.BTreatment
16、 of infertility is not successful.CInfertile couples suffer a lot physically and mentally.DIt is difficult for couples to have more children now.答案：A解析：段落大意题。联系全文可知，本文的主题是人类克隆技术。最后一段点明了现在治疗不孕的成功率很低，许多夫妇饱受煎熬，最后说明了利用人类克隆技术可以使不孕的夫妇有自己的孩子，因此A项正确。4What is the authors attitude towards human cloning?ASuppo
17、rtive. BDoubtful.CCautious. DCurious.答案：A解析：推理判断题。根据文章第一句，特别是关键词 benefit 及第二至五段(都是讲人类克隆技术会给人类带来益处)可推知，作者对人类克隆技术持支持的态度。.七选五Eyesight plays a very important role in our daily life. Over forty percent of Americans worry about losing eyesight, but its easy to include steps into our daily life to ensure h
18、ealthy eyes. Here are five suggestions for a lifetime of healthy eyesight.Schedule yearly exams. _1_ Experts advise parents to bring babies 6 to 12 months of age to the doctor for a careful check. The good news is that millions of children now can have yearly eye exams and following treatment, inclu
19、ding eyeglasses.Protect against UV rays (紫外线). Longterm stay in the sun creates risk to your eyes. No matter what the season is, its extremely important to wear sunglasses. _2_Give your eyes a break. Two thirds of Americans spend up to seven hours a day using computers or other digital products. _3_
20、 Experts recommend that people practice the 20/20/20 rule: every 20 minutes, take a 20second break and look at something 20 feet away._4_ As part of a healthy diet, eat more fruits and vegetables each day. Vitamins C and E help protect eyesight and promote eye health.Practice safe wear and care of c
21、ontact lenses (隐形眼镜). Many Americans use contact lenses to improve their eyesight. While some follow the medical guidance for wearing contact lenses, many are breaking the rules and putting their eyesight at risk. _5_ Otherwise, you may have problems such as red eyes, pain in the eyes, or a more ser
22、ious condition.AEat your greens.BEye care should begin early in life.CThey can properly protect your eyes.DStay in good shape by taking more vitamins.EParents usually dont care about their own eyesight.FAlways follow the doctors advice for appropriate wear.GThis frequent eye activity increases the r
23、isk for eye tiredness.本文是说明文。视力在人们生活中的影响不容忽视，拥有健康的视力是每个人关心的事情，作者在本文中介绍了5种可以让我们终身享有健康视力的建议。1B解析：下句提到医生建议父母带6到12个月大的孩子去医院做视力检查，所以保护视力应该很早就开始，故选B项。2C解析：上句提到不管什么季节，戴太阳镜都是非常重要的，因为它们可以适当地保护你的眼睛，故选C项。3G解析：上句提到三分之二的美国人每天花7个小时使用电脑和其他数码产品，结合常识可知，这个频繁的视力活动肯定会增加眼睛疲劳的危险，故选G项。4A解析：下句提到作为健康饮食，每天要多吃蔬菜和水果，此处为本段的主题句，分析选项可知A项合适。5F解析：下句提到不听从医生的建议会产生的后果，且由 Otherwise 可知，前后句有转折意味。结合选项可知，F项“佩戴眼镜要听从医生的建议”符合文意。