1、课时作业9Lesson 3Scientific Breakthroughs.单词拼写1He was in a_(困境) where he couldnt decide whether to accept or refuse the gift.2Youd better_(捐赠) some food and money to the poor children.3I often_(通信) with my old friends.4Mr Green is watering flowers._(与此同时)，Mrs Green is cooking breakfast.5The band_(分离) up
2、 in the 1970s.6He is an_(坦率的) man.7The_(薄雾) was floating over the mountain.8The man was_(治愈) of his heart attack.9He applied for a_(专利)10The_(结果) of the election was announced yesterday.答案1dilemma2.donate3.correspond4.Meanwhile5split6.outspoken7.mist8.cured9.patent10outcome.用适当的介、副词填空1The audience r
3、anged from adults_children.2Mr white corresponded_his wife once in a while.3Have you figured_this problem?4The tough man wrestled_the snowstorm.5Her father was dedicated_finding a way out.6He took away my basket_mistake.7The excellent players were singled_to compete in the game.8There is no doubt_hi
4、s honesty and kindness.9He is fond of participating _the voluntary work.10He based his opinion_facts.答案与解析1torange from.to 从到范围变化。2withcorrespond with 与通信。3outfigure out 弄明白。4withwrestle with 与搏斗。5tobe dedicated to 致力于。6byby mistake 错误地。7outsingle out 挑出。8aboutThere is no doubt about 毫无疑问。9inpartici
5、pate in 参加。10onbase.on 以为依据。.单句语法填空1Mr Li is dedicated to_(make) out the cause of the fire.2He was about to turn on the radio_he found something unusual.3_you are for or against the plan, you should let me know at once.4I dont know how_(apply) for this position.5There is some doubt_the government wi
6、ll approve this project.6He was doing some washing_the washing machine broke down.7While walking along the beach, he noticed some birds_(fly) over the surface of the sea.8He was in favour of my idea，_made me delighted.9If I_(have) enough money, I would buy that beautiful dress.10The teacher failed _
7、(get) across his idea to the students.答案与解析1makingbe dedicated to doing sth.致力于做某事。2whenbe about to do sth. when.正要做某事这时。3Whetherwhether.or.无论是还是。4to apply特殊疑问词后跟不定式形式。5whetherthere is some doubt 后跟 whether 引导同位语从句。6whenbe doing.when.正在这时。7flyingnotice.doing sth.注意到.在做某事。8whichwhich 引导非限制性定语从句，代替上文所
8、提到的事。9had虚拟条件句，表示与现在事实相反，从句用一般过去时，主句用 would/could do。10to getfail 后跟不定式形式。.语法填空During the Second World War, _1_Flemings discovery was first helping to cure people, the US Navy was looking _2_ways of improving the _3_(accurate) of their missiles. The navy turned _4_Eckert, an engineer, and Mauchly, a
9、 physicist, to wrestle _5_the problem and produce a machine to do the job. The two were dedicated to _6_(produce) the machine. The huge machine was the worlds first computer, but it was nothing_7_our computer today. It used _8_much energy that when it was turned on, the lights in the local town went
10、 _9_.There was no doubt _10_the computer laid a ground foundation of the later computer science.答案与解析1when先行词为时间名词，定语从句中缺状语，故用 when 引导。2forlook for 寻找。3accuracy名词作宾语。4toturn to 向求助。5withwrestle with 与搏斗。6producingbe dedicated to doing sth.致力于做某事。7likenothing like 一点不像8soso形容词不可数名词that 表示“如此以至于”。9out
11、go out 熄灭。10thatThere was no doubt that.毫无疑问。.阅读理解The kids in this village wear dirty, ragged clothes. They sleep beside cows and sheep in huts made of sticks and mud. They have no school. Yet they all can chant the English alphabet, and some can make words. The key to their success: 20 tablet compu
12、ters(平板电脑) dropped off in their Ethiopian village in February by a US. group called One Laptop Per Child.The goal is to find out whether kids using todays new technology can teach themselves to read in places where no schools or teachers exist. The Massachusetts Institute of Technology researchers a
13、nalyzing the project data say theyre already amazed. “What I think has already happened is that the kids have already learned more than they would have in one year of kindergarten，” said Matt Keller, who runs the Ethiopia program.The fastest learnerand the first to turn on one of the tabletsis 8year
14、old Kelbesa Negusse. The devices camera was disabled to save memory, yet within weeks Kelbesa had figured out its workings and made the camera work. He called himself a lion, a marker of accomplishment in Ethiopia.With his tablet, Kelbesa rearranged the letters HSROE into one of the many English ani
15、mal names he knows. Then he spelled words on his own. “Seven months ago he didnt know any English. Thats unbelievable, ” said Keller.The project aims to get kids to a stage called “deep reading，” where they can read to learn. It wont be in Amharic, Ethiopias first language, but in English, which is
16、widely seen as the ticket to higher paying jobs. 1. How does the Ethiopia program benefit the kids in the village? A. It trains teachers for them. B. It contributes to their selfstudy.C. It helps raise their living standards. D. It provides funds for building schools. 2. What can we infer from Kelle
17、rs words in Paragraph 3? A. They need more time to analyze data. B. More children are needed for the research.C. He is confident about the future of the project. D. The research should be carried out in kindergartens. 3. It amazed Keller that with the tablet Kelbesa could_. A. learn English words qu
18、ickly B. draw pictures of animals C. write letters to researchers D. make phone calls to his friends 4. What is the aim of the project? A. To offer Ethiopians higher paying jobs. B. To make Amharic widely used in the world. C. To help Ethiopian kids read to learn in English. D. To assist Ethiopians
19、in learning their first language. 答案与解析本文是一篇记叙文，题材为语言学习类。本文记叙了美国在贫困的埃塞俄比亚地区进行了一项研究，结果表明孩子们在没有学校和老师的条件下，利用平板电脑这项新科技可以很快地学英语。1B细节理解题。根据第三段第一句可知这项工程的目的是查明在没有学校和老师的地方，运用现代新技术，孩子们能不能自学。而且下文提到效果很好，所以应选B项(这项工程有助于孩子们自学)。2C推理判断题。第三段中这项工程的负责人 Keller 说：“我认为已经发生的事情是，孩子们学到的东西比他们上一年幼儿园学到的还要多。”所以可以推断出这项工程很成功，而且前景也
20、会很好，故选C项。3A细节理解题。根据倒数第二段可知：七个月前，Kelbesa 对英语一无所知，但是现在却能自己拼写出很多英文单词，这令人难以相信，所以选A项。4C细节理解题。根据最后一段第一句 The project aims to get kids to a stage called “deep reading”，where they can read to learn.可知这项工程是帮助埃塞俄比亚的儿童通过阅读来学习。紧接着下一句话是说：不是帮他们学他们的本族语 Amharic，而是英语，所以应选C项。.阅读填句Doctors Say Most Heart Disease Prevent
21、ableHeart disease is the number one killer, worldwide, of men and women over the age of 60. But people of all ages die of heart attacks each year. And while death rates have declined in the US. and many western European countries, they are on the rise in the developing world._1_No one would have gue
22、ssed that Barbara Teng would have a heart attack. She was not overweight. She did not smoke or exercise.“In 2004, the week after I turned 49, when I was on a business trip in Chicago，I had a major heart attack，” she said. _2_.She now exercises daily, and monitors her heart health.Dr. Patrice Nickens
23、, who is with the National Heart, Lung and Blood Institute, thinks that heart disease is 82 percent preventable.“_3_，” she said. “Men are also facing the same problem, and the key to staying healthy is knowing your numbers.”“Your weight, your blood cholesterol, blood sugar and your blood pressure ar
24、e important numbers that can help you take action and reduce your risk，” she said._4_.“And the steps to take are simple：dont smoke, maintain a healthy weight, exercise, know your numbers and talk to your physician and control these risks，” she said.AfricanAmericans are at higherthanaverage risk for
25、heart disease and stroke；people dont even know they have it, which increases the risk. Medstar Washington Hospital Center is trying to reach this population._5_. For example, helping the people monitor their blood pressure. If people realize they are at risk for heart disease，theyll make lifestyle c
26、hanges：lose weight, exercise, eat the right foods and keep in touch with a doctor.AA healthy lifestyle can prevent heart diseaseBSo we must cure heart diseaseCIt is the leading cause of death for womenDWith the right training, they can play an important role in community healthEAnd that changed her
27、lifeFLack of exercise causes heart attacksGYet most heart disease is preventable答案与解析本文为议论文。其主题是：大多数心脏病是可以预防的。1G本段的功能是提出主题，即大多数心脏病是可以预防的，故答案为G项。2E本空前面提到 Barbara Teng 在心脏病发作前不抽烟，不锻炼(did not smoke or exercise)，设空处后提到她开始每天锻炼(She now exercises daily)，由此可见心脏病发作改变了她的生活，故答案为E项。3C根据设空后的“Men are also facing
28、the same problem”可推知本空应为心脏病对女性的影响，C项中的“women”是一种暗示。4A设空处下面介绍的内容都是生活方式的改变，故答案为A项(健康的生活方式可以预防心脏病。)5D设空处后的句子(例如：帮助人们监测血压)作为例子用于说明本空的内容，通过逆向思维可推知本题答案为D项(通过正确的培训，他们可以在社区健康方面起很大的作用)。.语法填空Scientists have found that pesticides (农药) harm the ability of bees to find food. Bees must learn which flowers contain
29、 their food from the smells of the flowrs. _1_ the bees do not learn which smells mean food, they will starve. Researchers in Britain found that pesticides _2_ (use) by famers and gardeners can switch off the part of a bees brain that is responsible _3_ associating smells with food. Lead researcher
30、Dr. Geraldine Wright said pesticides could seriously impact the _4_ (survive) of honeybee colonies. She said. “Bees that cannot learn will not be able to find food.” This also _5_ (mean) bees will not pollinate (给授粉) crops and wild plants.Bee populations around the world have been declining. Scienti
31、sts have searched for a long time for a reason _6_ so many bees are disappearing. The new research may be _7_ important clue. However, the British government does not want to stop the use of the pesticides that may prevent bees from learning. _8_ wants to carry out more tests to make sure pesticides
32、 are the real reason for the decrease in the number of bees. A spokeswoman from the Friends Of The Earth charity said the government must act _9_ (soon) rather than later.“Bee health is far too urgent to wait _10_ more research has been completed. Controls should be placed on these pesticides until
33、bee safety can be guaranteed，”she said.答案与解析1Ifif引导条件状语从句，意为“如果”。2usedpesticides与use之间为被动关系，故用过去分词作定语。3forbe responsible for对负责。4survival名词作宾语。5means该空为谓语动词，根据上下文用一般现在时。6why先行词为reason，定语从句中缺状语，故用why引导。7an表示“数量一”，用不定冠词。8Itit代替the British government。9sooner根据rather than later可知。10untiluntil引导时间状语从句。.短
34、文改错Travelled abroad, you should follow the customs of the country where you are visiting. When you invited, it is good manners to refuse or accept an invitation, either by writing or by telephoning. If you go to the party, it is polite to reach on time. It is good manners to shake hand with your hos
35、t. You can take a present if you like, possibly a bottle of wine, a box of chocolates and some flowers. However, it was not bad manners to take nothing. It is not polite to stay too late before the other guests have gone. Also, it is suggested to write or telephone a day or two late to thank your ho
36、st.答案 abroad, you should follow the customs of the country you are visiting. When you invited, it is good manners to refuse or accept invitation, either by writing or by telephoning. If you go to the party, it is polite to on time. It is good manners to shake with your host. You can take a present if you like, possibly a bottle of wine, a box of chocolates some flowers. However, it not bad manners to take nothing. It is not polite to stay too late the other guests have gone. Also, it is suggested to write or telephone a day or two to thank your host.