1、Section Using Language,Summing Up & Learning Tip课时过关即时巩固一、用方框中所给的词组完成下列句子pull throughnow thatcheer upbreak downwatch out1.He at once when I promised to help him.答案:cheered up2.Old-fashioned phones matter when wireless networks in disasters.答案:break down3.Im well again,I can go on with my work.答案:Now
2、 that4.!There is danger ahead.答案:Watch out5.The doctor had almost lost hope at one point,but the patient finally .答案:pulled through二、单句改错1.What we should watch out is the terrible animal. 答案:在out后加for2.The fire was broke out last Sunday. 答案:去掉was3.Now that you want to learn English well,so you shoul
3、d work hard. 答案:去掉so4.The boy knows how to cheer him up when he is sad. 答案:himhimself5.Do you know why the spaceship doesnt fall back the earth? 答案:back后加to 三、完成句子,词数不限1.别太使劲拉,不然把手会脱落。Dont or the handle will come off.答案:pull so hard2.为了使她高兴,我带她去看电影。I took her to the cinema to .答案:cheer her up3.既然你已完
4、成了工作,就应该好好休息一下。You should have a good rest youve finished the work.答案:now that4.你能告诉我第一次世界大战发生在什么时候吗? Can you tell me when the First World War?答案:broke out5.我想你应该提防那个人。I think you should that man.答案:watch out for四、阅读理解None of our early ancestors could digest milk as adults because their bodies never
5、 had tomilk drinking simply wasnt an option.As people began to extract milk from animals,though,some people developed the ability to keep drinking it throughout their lives.Scientists now know of a milk-related mutation(变异) in our genesthe chemical instructions for life that we carry in almost every
6、 cell in our bodies.People who have a mutated form of one particular gene can drink milk just fine.People without the mutation tend to get sick from milk.To figure out where,and possibly why,milk drinking started,some scientists have been looking at who has the milk-digesting mutation today.Patterns
7、 are striking.Most adults in Northern and Central Europe are able to digest milkand they do.Cheese and butter and other dairy products are popular in countries such as Sweden,Denmark,Germany and England.Because European settlers dominated North America,most people here can handle milk just fine,as w
8、ell.That may explain why ice cream is such a popular dessert in the United States.In much of Africa,Asia and South America,on the other hand,people tend to avoid dairy products because they lead to diarrhea(腹泻) and other stomach problems.Thats why you wont typically find cheese on the menu at a Chin
9、ese,Japanese or Ethiopian restaurant.Native Americans are also unable to digest milk.Because of these genetic patterns,scientists have long thought that milk drinking started in Northern Europe,where dairy is an institution and the milk-digesting mutation is everywhere.A recent study painted a diffe
10、rent picture.With a computer model,Thomas and his colleagues looked at the spread of the milk-drinking mutation,farming and other related factors.Working backward,the scientists concluded that the first milk-drinkers lived in Central Europe around whats now Hungary about 7,500 years ago.The practice
11、 didnt start farther north,as scientists had thought before.1.Which of the following is the proper order of events according to the passage?a.Their children were able to digest milk as adults.b.They got sick from milk.c.Some people got a mutation in their genes.d.Some people tried drinking milk from
12、 animals.e.Some people started to drink milk from animals on a regular basis.A.cdbeaB.debcaC.dbecaD.edbca答案:C解析:细节理解题。由第一段最后一句可知d排第一,排除A、D两项;由第二段最后两句可判断d、b应该是紧挨着的,排除B项,再结合常识可知C项合适。2.Most people in the USA can digest milk because .A.they have strong stomachsB.their ancestors were EuropeansC.thats whe
13、re milk drinking startedD.farmers raise a lot of cows there答案:B解析:细节推理题。由第四段“Most adults in Northern and Central Europe are able to digest milkand they do.Because European settlers dominated North America,most people here can handle milk just fine,as well.”和最后一段中的“Working backward,the scientists con
14、cluded that the first milk-drinkers lived in Central Europe around whats now Hungary about 7,500 years ago.”可推知B项正确。3.Which of the following is the author most likely to agree with?A.Milk drinking first started in Northern Europe.B.Milk drinking first started in Central Europe.C.Native Americans wer
15、e able to digest milk.D.Dairy products are very popular in Japan.答案:B解析:细节判断题。由最后一段中的“Working backward,the scientists concluded that the first milk-drinkers lived in Central Europe around whats now Hungary about 7,500 years ago.”可知A项错误,B项正确。由第五段中的“Native Americans are also unable to digest milk.”可知C
16、项错误。由第五段中的“In much of Africa,Asia and South America,on the other hand,people tend to avoid dairy products because they lead to diarrhea and other stomach problems.” 可知D项错误。4.The main focus of the scientists research was .A.mutation of human genesB.development of the human stomachC.why milk drinking
17、startedD.where milk drinking first started答案:D解析:主旨大意题。由全文内容可知,A项范围太广,B项偏题,C项只是文章的一个细节,故选D项。五、短文改错Human beings can rebuild nature,but when people face nature disasters such as hurricane,drought,flood and volcano,people are very frightening.Now many scientists concentrate to environmental protection.
18、The film naming The Day After Tomorrow shows the effect of global warming.It is terrible and shocking everyone.Although the film is imaginary,but nobody can guarantee that we wont face the same thing some day.The film warns us we must take care of environment.If we can live in a safe and stable worl
19、d,we can enjoy scenery,learn knowledge,and shared the love and warmth.I strongly suggest that people should try our best to live with nature peacefully.答案:Human beings can rebuild nature,but when people face naturenatural disasters such as hurricane,drought,flood and volcano,people are very frighten
20、ingfrightened.Now many scientists concentrate toon environmental protection.The film namingnamed The Day After Tomorrow shows the effecteffects of global warming.It is terrible and shockingshocks everyone.Although the film is imaginary, nobody can guarantee that we wont face the same thing some day.The film warns us we must take care ofthe environment.If we can live in a safe and stable world,we can enjoy scenery,learn knowledge,and sharedshare the love and warmth.I strongly suggest that people should try ourtheir best to live with nature peacefully.
