1、Unit 3 课时跟踪检测（二） Word power, Grammar and usage & Task.单词拼写1We have a tight schedule for your brief (短时间的) visit. I hope you dont mind.2She originally (最初) thought of donating all of her organs to save others lives, but failed to do it because of her serious illness.3The majority (多数) of students wer
2、e in favour of the suggestion that they (should) go out for a picnic next Sunday.4Having taken the matter into consideration (仔细考虑) many times, we decided not to buy such an expensive car.5Ive known him for years, and I trust his judgement (判断)6The following is a summary (总结) of our conclusions.7Acc
3、ording to the survey conducted (实施) by this university, only 18% are for the idea.8To be frank, I will choose teaching as my profession (职业) in the future.单句改错1My greatest dream is to become a profession football player in the future. professionprofessional2The famous scientist inspired many young p
4、eople to follow in his footstep.footstepfootsteps3I shall make my own judgement of this matter when I see the result.ofon/about4A man is being questioned in relation with the attempted murder last night.withto5Some families are very poor to send their children to school.verytoo.选词填空take .into consid
5、eration， in brief， put .in place， follow in the footsteps of .， get burnt out 1Dont worry.I have put everything in_place.2Dont work so hard, or you will get_burnt_out.3She works in education, following_in_the_footsteps_of her father.4Taking everything into_consideration,_the event was a great succes
6、s.5We should, in_brief,_invest heavily in digital systems.阅读理解AA microscope (显微镜) is a useful instrument for observing small objects by producing a bigger image. The microscope shows details that cannot be seen by the naked eye (肉眼)Before using the microscope, please read the instructions below.CAUT
7、ION：Microscopes are both easily broken and expensive and must be handled with care.1Always carry the microscope with two hands one supporting the base and the other on the arm.2Avoid stretching the power cable of the lamp across a walkway.3Keep the stage clean and always use a glass slide for sample
8、s. To avoid breaking the glass slide when focusing, begin with the lens (镜头) close to the sample and gradually back off to focus. Keep the microscope covered to prevent the buildup of dust while it is being stored.HOW TO USE THE MICROSCOPE：1Turn on the lamp.2Place a sample of what you wish to observ
9、e on a slide.3Move the mirror so it reflects (反射) light from the room up into the objective lens. When the mirror is in the correct position, a complete circle of light will appear when you look through the eyepiece.4Place your slide with the sample directly over the center of the glass circle on th
10、e stage. If it is a wet slide, be sure the bottom of the slide is dry.5With the LOW POWER objective lens placed over the slide, use the coarse focus knob (粗聚焦旋钮) to lower the lens to the lowest point.6Look through the eyepiece with one eye while closing the other eye. Slowly raise the lens until the
11、 focus is relatively clear.7Use the fine focus knob (精细聚焦旋钮)8Without changing the focus knobs, switch to the HIGH POWER objective lens. Once you have switched to HIGH POWER, use only the fine focus knob to make the image sharper.语篇解读：本文是应用文。文章主要介绍了如何使用显微镜以及注意事项。1If you want to observe a piece of hai
12、r, which of the following should you do first?AMove the mirror.BCover the microscope.CLook through the eyepiece.DPlace the hair on a glass slide.解析：选D细节理解题。由HOW TO USE THE MICROSCOPE内容介绍中的“Place a sample of what you wish to observe on a slide.”可知，如果要用显微镜观察头发，应先把头发放在玻璃片上。2According to the text, you c
13、ould see a complete circle of light _.Aas soon as you turn on the lampBafter slowly raising the objective lensCwhile looking at the sample on the glass slideDafter moving the mirror in the correct position解析：选D细节理解题。由HOW TO USE THE MICROSCOPE内容介绍中的“When the mirror is in the correct position, a compl
14、ete circle of light will appear”可知D项正确。3What is the main purpose of this text?ATo show readers the various parts of a microscope.BTo persuade readers to buy this type of microscope.CTo instruct readers on how to use a microscope with care.DTo remind readers to be careful when using a microscope.解析：选
15、C写作目的题。本文主要介绍了如何使用显微镜以及在使用时应该注意的事项。BThere are many 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 cloni
16、ng.Scientists believe that they may be able to 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 breakthro
17、ugh with human stem cells. Embryonic stem cells 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
18、produce needed organs for suffering people that 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
19、生育) are getting a fair amount of publicity in the 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 child
20、ren. Many couples run out of time and money without successfully having children. Human cloning could make it possible for many more infertile couples to have children than ever before possible.语篇解读：本文作者从几个方面介绍了克隆人技术给人类带来的益处。4According to Dr Richard Seed, we can use cloning technology to _.Aproduce
21、more animalsBmake people live happilyCmake people look youngerDcure people of many diseases解析：选C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。5We can learn from the passage that _.Acloning has already been used to treat heart diseaseBwe ca
22、n treat a mans heart disease by cloning heartsCmost people in industrial countries suffer from heart diseaseDmore people die of heart disease than of other diseases in the US解析：选D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。6What is the main idea of the last paragraph?AWith cloning
23、infertile couples could have children.BTreatment of infertility is not successful.CInfertile couples suffer a lot physically and mentally.DIt is difficult for couples to have more children now.解析：选A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。7What is the
24、 authors attitude towards human cloning?ASupportive.BDoubtful.CCautious. DCurious.解析：选A观点态度题。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。.语法填空Carter G. Woodson was born in the state of Virginia in 1875. His parents were both former slaves. Neither of his parents ever had the ch
25、ance _1_ (learn) to read or write. Woodson, however, had a strong interest _2_ education. Because he spent much of his youth helping his family by _3_ (work) in farming and mining, Woodson mostly taught _4_ (he)Woodson _5_ (enter) high school at the age of 20 and received his diploma in just two yea
26、rs. He went on to become the second African American in history to earn a doctorate (博士学位) from Harvard University.Woodson started a publication _6_ (name) The Journal of Negro History. It was later renamed The Journal of African American History. In it, he and other experts wrote about AfricanAmeri
27、can life and history. He also wrote more than 12 _7_ (book) on the topic during his lifetime. In 1926, Woodson developed _8_ education program on the study of AfricanAmerican history. The oneweek program _9_ (call) Negro History Week. It took place in February. Woodson chose February because it was
28、the birth month of abolitionist Frederick Douglass and President Abraham Lincoln. That weeklong program later expanded to become _10_ is known today as Black History Month.语篇解读：本文是对著名的黑人历史学家卡特伍德森的简单介绍。1to learn考查不定式作定语的用法。have the chance to do sth.意为“有做某事的机会”。2in考查介词。have a strong interest in . 意为“对
29、有浓厚的兴趣”。3working考查动词ing形式作宾语的用法。by doing sth.意为“通过做某事”。4himself考查代词。teach oneself意为“自学”。5entered考查时态。由时间状语at the age of 20可知，设空处所表示的动作发生在过去，故用一般过去时，故填entered。6named考查过去分词作定语的用法。publication后跟定语，因name与publication之间是逻辑上的动宾关系，且name所表示的动作已完成，故填named。7books考查名词复数。由空前的“12”可知此处用名词复数，故填books。8an考查不定冠词。此处泛指一项教育项目，且education是以元音音素开头的单词，故填an。9was called考查时态和语态。设空处所在句描述的是过去事实，且The oneweek program与call之间是被动关系，故填was called。10what考查连接词。设空处引导从句作become的表语，且在从句中作主语，再结合句意可知应填what。