1、课时作业(十二)Unit 3A healthy lifeSection Grammarit的用法().单句写作1It_is_reported_that(据报道) a big earthquake hit the area yesterday.2How_long_did_it_take_you(花费你多长时间) to get here by air?3They_made_it_clear(他们表明) to the public that they are doing an important and necessary job.4I dont think it appropriate to_pu
2、t_too_much_stress_on(给施加太多的压力) your children.5It_is_five_years(已经5年了) since I decided on learning English.6I dont think it possible to_master_a_foreign_language(掌握一门外语) without much memory work.7John said it_was_important_to_go_on_with_the_experiment(继续这个实验是很重要的)8Dont you agree that it_is_no_use_arg
3、uing_with_Jim(与吉姆争论是没有用的)?9He disliked_it_when_she_behaved_badly(讨厌她举止不当) in front of his mother.10It_is_a_waste_of_time_persuading(浪费时间劝说)such a person to join us.阅读理解 Heres one more reason to kick your smoking habit: A new study has found that cigarette smoking leads to diseasecausing DNA damage t
4、hat can last more than 30 years after a person quits. The study involved blood samples from more than 16,000 people, including present and former smokers and people who had never smoked. The researchers found evidence of a “longterm sign” in tobacco users DNA that likely contributes to diseases asso
5、ciated with smoking such as lung cancer and heart disease, according to the report. Cigarettes other hazardous effects include an increased risk for diseases like cancers, as well as lung and cardiovascular disorders. The studys key focus was cigarettes effect on DNA methylation(甲基化), which directs
6、gene expression. According to the researchers, methylation happened in genes linked to smokingrelated diseases. In all, about onethird of known genes in smokers were found affected. While most of these genes went back to normal levels five years after a person quit, changes in 19 genes including the
7、 TIAM2 gene, which is linked to lymphoma lasted 30 years, NBC reported. “The encouraging news is that once you stop smoking, most of DNA methylation signals return to neversmoker levels after five years, which means your body is trying to cure itself of the harmful impacts of tobacco smoking，” Joeha
8、nese said. Cigarette smoking is the leading preventable cause of death in the US., according to the Centers for Disease Control and Prevention. Each year, more than 480,000 people die from its health effects. That figure is equal to nearly one in five deaths overall. So if youre a smoker, seriously
9、consider quitting for the sake of your health; if youre a nonsmoker, never try your first cigarette. 【文章大意】 本文为说明文，题材为环保健康类。吸烟不仅是多种疾病的诱因，研究发现它还会对DNA造成长远的不利影响。1. Whats the new finding of the study?ASmoking can contribute to various diseases.BIt wont work even if smokers quit smoking.CSmoking causes n
10、early one in five deaths overall.DSmoking causes longterm damage to your DNA.解析：D细节理解题。根据第一段的A new study has found that cigarette smoking leads to diseasecausing DNA damage that can last more than 30 years after a person quits可知，这个研究主要表明吸烟会对DNA造成长期不良影响。2. What does the underlined word “hazardous” in
11、 Paragraph 2 mean? ACommon. BDangerous.CIndirect. DTemporary.解析：B词义猜测题。根据划线词后面的include an increased risk for diseases like cancers, as well as lung and cardiovascular disorders可知，这里是指“有害的、危险的”影响。3. What is the main idea of Paragraph 6?ACigarette smoking is really harmful.BA lot of deaths in the US.
12、can be prevented.CDeaths caused by smoking form the largest part.DMany people in the US. die because of health effects.解析：A段落大意题。根据第六段可知，每年死于吸烟危害的人有48万余人，即吸烟的危害很大。.完形填空 My sister Martie and her husband Jan, just returned from their trip to Ecuador, and I couldnt wait to hear their _1_ about their tw
13、o weeks abroad. As I listened to them _2_ their adventures over dinner the other night, I was _3_！ So many changed lives! As dinner came to a close, I _4_ that my sister had a new ring on her right hand, so I asked her about it. _5_， tears came to her eyes as she began telling me about her beautiful
14、 new _6_. Early in the trip, they went to a church, where they met a woman, who shared her _7_ with addiction(沉迷) and other life struggles with them. They prayed(祈祷) with her, and _8_ Martie hugged her, an idea struck her that she could give her ring to the woman as a gift. So Martie _9_ her ring, h
15、anded it to the woman, and said, “Please accept this ring so that every time you look down at your _10_， youll remember this day and celebrate your new beginning.” The woman was _11_. She cried, put the ring on her finger, and a _12_ smile spread over her face. Then, on their final night, they _13_
16、a woman they had prayed for when they were in Ecuador four years before. She _14_ shared how much her life had _15_ for the better since their first visit, As they were rejoicing (欢喜) with her, the woman took off her _16_ ring and put it on Marties right ring finger. She said she wanted to bless (保佑
17、) Martie with her ring. Martie could hardly speak, but she managed to say _17_ to the woman. Now, every time Martie looks down at her right hand, she is _18_ of the kindness of the woman from Ecuador. She _19_ if you pay kindness forward, it will _20_ to you at last.【文章大意】 本文是记叙文。送出去一枚戒指，又收到别人赠送的一枚戒
18、指，善意可以传递。1A.stories Bopinions Ctroubles Dideas解析：A由该空前的hear和下文中的their adventures可知，“我”等不及想要听他们在国外的“故事(stories)”。2A.discuss Bexpress Cexperience Dshare解析：D由下文的描述可知，妹妹和妹夫“分享(share)”他们的奇遇。3A.relaxed Bconcerned Camazed Dfrustrated解析：C由该空后的So many changed lives可知，听了他们的故事，“我”感到很“吃惊(amazed)”。4A.decided Bno
19、ticed Cconsidered Dexpected解析：B由该空后的my sister had a new ring on her right hand可知，“我”“注意到(noticed)”妹妹的右手上戴着一枚新戒指。5A.Finally BLuckily CClearly DImmediately答案：D6A.friend Bring Cwatch Djob解析：B由文中的描述可知，“我”问完后，她“立刻(Immediately)”哭了，并给“我”讲述了她的新“戒指(ring)”的故事。7A.plan Btask Cbattle Darrangement解析：C由该空后的other l
20、ife struggles可知，她分享了她与生活的“斗争(battle)”。8A.as Bthough Csince Dunless解析：A“当(as)”Martie拥抱她的时候，她有了一个想法。9A.took off Bpicked out Cput on Dput away解析：A由下文中的handed it to the woman可知，Martie把戒指“摘下来(took off)”。10A.wrist Bfeet Chand Dlegs解析：C由上下文的描述可知，此处指当你每次低头看“手(hand)”的时候，你都会记得这一天。11A.amused Bmoved Csad Dsatis
21、fied解析：B由该空后的She cried可知，她很“感动(moved)”。12. Agrateful BnaturalCsimple Dforced解析：A由文中的描述可知，她非常感激，因此脸上露出了“感激的(grateful)”笑容。13A.talked about Bwaited for Cturned down Dcame across解析：D由该空后的a woman they had prayed for when they were in Ecuador four years before可知，他们“遇到(came across)”四年前曾为其祈祷的一位女士。14A.bravel
22、y Bexcitedly Cpolitely Dsecretly答案：B15A.left Bpromised Cchanged Dkept解析：C由该句中的shared how much her life had.for the better可知，这位女士“兴奋地(excitedly)”给他们讲述她的生活“变(changed)”好了多少。16A.old Bexpensive Cround Dlovely解析：D由上文中的telling me about her beautiful new.可知，这位女士把她“漂亮的(lovely)”戒指摘下来，戴到Martie右手的无名指上。17A.goodb
23、ye Bthanks Csorry Dhello解析：B由文中的描述可知，Martie向那位女士表达“感谢(thanks)”。18A.warned Btold Cinformed Dreminded解析：D每当Martie低头看到自己的右手，她都会“想起(reminded)”那位女士的善意。19A.believes Bpredicts Cagrees Dproves答案：A20A.turn Bpoint Creturn Dflow解析：CMartie“相信(believes)”如果你将善意传递出去，它最终会“回归(return)”于你。.语法填空 We all have habits and
24、routines. Once we get into these habits or routines, 1._can be difficult to change them. Finding out what causes a bad habit is an important step to changing that habit. For example, for some people, 2._(stressed) they get, the more they bite their nails. Knowing that stress leads to nail biting can
25、 help people to find something to keep their hands busy when they are under 3._ (press) Little changes can make 4._big difference. Next time you feel like 5._ (smoke), put it off. Instead, keep yourself busy by doing work, reading, or going 6._ a walk. Sometimes, if you wait a little while, you will
26、 find that the desire goes away. If not, go ahead but cut down the amount. 7._ (final)，youll find youre no longer addicted to 8._ (cigarette) Set a specific goal at a time and stick to it. As soon as you reach your goal, make 9._ one. Before you know it you will have formed a(n) 10._(health) lifesty
27、le!1解析：it考查it的用法。设空处作形式主语，to change them是真正的主语，故填it。2解析：the more stressed考查形容词比较级的用法。设空处所在句用了“the比较级.，the比较级.”的结构，表示“越，越”，故填the more stressed。3解析：pressure考查名词。under pressure意为“在压力之下”。4解析：a考查不定冠词。make a big difference意为“产生很大的影响/带来很大变化”。5解析：smoking考查动词ing形式作宾语的用法。feel like doing sth.意为“想要做某事”。6解析：for考查介词。go for a walk意为“去散步”。7解析：Finally考查副词。设空处修饰整个句子，故填Finally。8解析：cigarettes考查名词复数。设空处指的是一类事物，故填cigarettes。9解析：another考查限定词。由语境可知设空处指“别的，另外的”，故填another。10解析：healthy考查形容词作定语的用法。设空处在此作定语修饰名词lifestyle，故填healthy。
