人教版(新教材)高中英语选修2Unit 1　Science and Scientists课时作业2：The Rest of the Unit(P7～12)

1、The Rest of the Unit（P712）i .单词拼写.William called his assistant （Ml II） to take over while he went out. Yao Ming is one of the most gifted（有天赋的）players in the world.Kobe is an outstanding （杰出的）athlete and deserved to win.Despite the steady （平稳的）progress of building work, the campaign against it is st

2、ill going strong.5.If you get a chance to see the show, do go-its brilliant（绝妙的）.6.His manners had always made her blind to his faults（缺点）.7.Its not a question of some abstract（抽象的）concept of justice.8.Troops have been sent to defend（保卫）the borders.n .补全句子1 .The fire broke out at 2 oclock, so many p

3、eople were killed when they were sleeping.大火发生在夜里两点钟，因此很多人在熟睡中被烧死了。.Its_ hi义 fault for not taking good care of the baby.没有好好照顾孩子是他的错。.She has a mental toughness that did no匚 come about by chance.她的意志坚强并非无意产生的。.They need shift from farming to industry, and they need to do so desperately.他们需要从农业转向工业，而

4、且他们需要拼命地这样做。.You cant take a good photograph unless the object is in focus.只有对准焦距才能拍出好照片。.Not only does the sun give us light but also it gives us heat.太阳不仅给我们光，而且给我们热。in .阅读理解Crossing your legs is an extremely common habit; most people dont even notice that theyre doing it when they sit down.While

5、you may find it comfortable to sit with one knee crossed over the other, it might be causing health problems that you are not aware of.A study published in Blood Pressure Monitoring stated that sitting with your legs crossed can increase your blood pressure.Actually, the blood in your legs has to wo

6、rk against gravity to be pumped back to your heart.Crossing one leg over the other increases resistance, making it even harder for the blood to circulate.This causes your body to increase your blood pressure to push the blood back to the heart.Crossing your legs can also lead to neck and back pain.W

7、hen you sit with your legs crossed your hips are in a twisted position, which can cause one of your pelvic bones to turn a bit.Since your pelvic bone supports your neck and spine, this can cause pressure on your lower and middle back and neck.You also might notice that when you sit with your legs cr

8、ossed for long periods of time your feet and legs have the feeling of being asleep.This is because when one leg sits on top of the other the veins and nerves in them are pressed, thus bringing about temporary paralysis in the legs, ankles, or feet.While the feeling of discomfort may only last a minu

9、te or two, repeatedly crossing your legs until they feel numb can cause permanent nerve damage.So next time you sit down, try to get yourself in the habit of sitting with both of your feet planted flat, hip width apart, on the floor.Not only will it help your posture and stability, but it will also

10、save your health in the long run.K语篇解读H这是一篇说明文。文章主要讲了跷二郎腿是一种很普遍的习惯，但是它对身体有害。.Crossing your legs when you sit can lead to.A.permanent paralysisB.high blood pressureC.leg numbnessD.bone damageK答案R C K细节理解题。K答案定位在第四段第二句This is because.in the legs, ankles, or feet.可知，当你坐的时候，跷二郎腿坐着可能会导致腿麻木， 应选C。.What is

11、the passage possibly taken out from?A.A scientific journal.B.A healthcare guidebook.C.A medical brochure.D.A medical textbook.K答案X B K推理判断题。这篇文章主要讲了跷二郎腿是一种很普遍的习惯, 但是它对身体有害。由此推断出这篇文章可能出自一份医疗指南，应选B。x 3.1n writing this passage, the author intends to.A.analyze the effect of crossing legsB.emphasize the

12、importance of a good habitC.explain the function of our bodyD.alert readers to the harms of crossing legsK答案D K写作意图题。K答案定位在第一段第二句While you may find it comfortable.you are not aware of.（虽然你可能觉得跷二郎腿坐着很舒服，但这 可能会导致你没有意识到的健康问题。）所以作者写这篇文章的目的是警告读者 跷二郎腿的危害，应选D。W.阅读七选五Before going outside in the morning, man

13、y of us check a window thermometer （温度 计）for the temperature.This helps us decide what to wear. 1 We want our food to be a certain coldness in the refrigerator.We want it a certain hotness in the oven.If we dont feel well, we use a thermometer to see if we have a fever.We keep our rooms a certain wa

14、rmth in the winter and a certain coolness in the summer.Not all the thermometers use the same system to measure temperature.We use a system called the Fahrenheit scale.But most other countries use the Centigrade scale.Both systems use the freezing and boiling points of water as their guide. 2The mos

15、t common kind of thermometer is made with mercury （水车艮）inside a clear glass tube.As mercury (or any other liquid) becomes hot, it expands.As it gets colder, it contracts (收缩).That is why on hot days the mercury line is high in the glass tube. 3First.Take a clear glass juice bottle that has a cap; fi

16、ll the bottle with coloured water.Tap a hole in the center of the cap using a hammer and thick nail.Put the cap on the jar.Then stick a plastic straw through the nail hole, 4Finally.Place a white card on the outside of the bottle and behind the straw.Now you can see the water level easily. 5As the t

17、emperature goes down, the water will contract, and the level in the straw will come down.Perhaps you will want to keep a record of the water level in the straw each morning for a week.A.We use and depend on thermometers to measure the temperature of many other things in our daily lives.B.Thermometer

18、s measure temperature, by using materials that change in the same way when they are heated or cooled.C.Now that you know this rule you can make a thermometer of your own that will work.D.The water will rise in the straw. As the temperature of the air goes up, the water will expand and rise even high

19、er.E.They label these in different ways.On the Fahrenheit scale water freezes at 32 degrees and boils at 212 degrees.On the Celsius scale water freezes at 0 degrees and boils at 100 degrees.F.Take wax (you may use an old candle if you have one) and melt some of it right where the straw is struck int

20、o the cap to seal (把粘住)them together.G.People use thermometers which are made by themselves when travelling around the world.K语篇解读U本文是一篇说明文。文章讲述了温度计在人们日常生活中的应用及如何自制简易温度计。.AK由上下文可知，此处陈述我们日常生活中很多其他情况下也需要用温度计来测量温度，故A正确。.E K从上文可知，温度计分华氏温标和摄氏温标两种方式计量温度，选项E进 一步介绍了这两种温度计量方式冰点和沸点的不同，故正确K答案是E。 3.CK本段前一局部介绍了温

21、度计的设计和工作原理，下文“FirstFinally”详细描述了制造一个能够起到计量温度作用的温度计的步骤，所以C符合文意。 4.F K根据设空处前一句的内容可推断此处应说明如何把吸管粘到瓶盖上，故F 符合语境。D.DK由设空处上一句尤其是下一句内容可判断此处说明水位在吸管中上升的情况，应选D。V.语法填空Baidu is not a doctorWhen people 1. (face) with a health or nutrition question, its 2. (increasing) common to go online and diagnose (诊断) themselv

22、es.But the Internet is full of health warnings with no regulation to get rid 3.the wrong advice, some of which 4.(be) extremely unreliable and 5.(danger)!Also, search engines rank results by popularity rather than accuracy(准确性)，so facts can be tricky to find.Ifs worth 6.(check) if the writer of an o

23、nline piece is a proper expert.Anyone can call 7. (they) a “diet expert” , “nutritionist” and even a “doctor“一given it could refer to qualifications(资格)like a PhD.But remember, only officially recognized practicing doctors as well 8.dietitians have degrees in giving medical suggestions.So if youre u

24、nsure and still wondering 9.the chocolate diet really does work or not, then it pays to make 10.appointment with your dietitian or doctor.The truth is out there, and you just need to look in the right place!K语篇解读1这是一篇说明文。现在有很多人在遇到健康或营养方面的问题时， 都会去百度进行搜索，甚至自我诊断。因为百度搜索的结果是按照受欢迎程度排 序而不是准确性。百度不是医生，如果遇到跟健康有关的问题时，还是要及时去 看医生。l.are facedK考查动词。句意：当人们遇到有关健康或营养的问题时，越来越普遍的现象是上网进行自我诊断。be faced with为固定搭配，意为“面对”， people为集合名词，谓语动词应用复数形式。同时，全文时态为一般现在时，故 填 are faced。32.increasingly K考查副词。common为形容词