一、完成对话

　　1.Shop assistant: Good morning.Can I help you?

　　Customer: _________.I"m just looking round.

　　A. No,you can"t

　　B. Not at the moment,thanks

　　C. Yes,please

　　D. Yes,thank you

　　答案：B

　　2.Ann: Do you still have a headache,Bill?

　　Bill:Yes,I do.And now I have a fever and cough constantly.

　　Ann:________.

　　A. That"s very regerful

　　B. That"s pitiful

　　C. That"s too bad

　　D. That"s worse

　　答案：C

　　3.Marie: Your little boy has done a good job at school.

　　Eva: ___________.

　　A. Yes,you are very kind

　　B. No,you"er too polite

　　C. Thanks,but you"er exaggerating

　　D. Yes,I"m pround of him

　　答案：D

　　4.Nancy: Hello,Ted.What"s wrong with your arm?

　　Ted: I broke it when I was skating on the holiday.

　　Nancy: Oh,no!__________

　　Ted: Much better,thanks.

　　A. What a nuisance!

　　B. How awful!

　　C. Why was that?

　　D. What a trouble!

　　答案：B

　　5.Paul: Do you have to have that TV on quite so loud?

　　Carol:______.Is it bothering you?

　　Paul: Yes,I"m trying to sleep.

　　A. Oh,I"m sorry

　　B. Oh,excuse me

　　C. No,I don"t

　　D. Yes,I have to

　　答案：A

　　6.Samuel: Hey,________?

　　Diana: I wish I could.But I really have to stay in and finish my paper tonight.

　　Samuel: Oh,maybe some other time,then.

　　A. Can I come to visit you tonight

　　B. Shall we have a barbecue some day this week

　　C. Would you like to go to cinema with me tonight

　　D. John will leave Chicago tonight.Shall we go to see him off

　　答案：C

　　7.Rebecca:_________

　　Dora: Really?Well, personally,I think he wears the wrong colors.Actually light colors don"t really suit him.

　　A. I don"t think Bob has chosen the right suit.

　　B. I love the way Bob dresses.He always looks so smart.

　　C. How funny Bob looks in that jacket!

　　D. Bob"s new coat looks very expensive.

　　答案：B

　　8.Emily: Did anybody sign your petition?

　　Gordon:Yes,we had a hundred signatures,_______.

　　A. if no more

　　B. if not more

　　C. if moreover

　　D. if not larger

　　答案：B

　　9.Policeman: OK,buddy,your driving license.How fast were you going?

　　William: Well it was about 50 mph or less.I was driving very slowly.

　　Policeman: 50 mph?_____ All right.That"ll be one hundred dollars.

　　A. Don"t you know the speed limit downtown is 40 mph?

　　B. Don"t you know the controlled speed downtown is 40 mph?

　　C. You need to fix your car.

　　D. You drive in the wrong way.

　　答案：A

　　10.Tommy: Mommy,when will we have dinner?I"m starving.

　　Mother: _______.We have to wait for daddy.

　　A. Soon,honey

　　B. Quickly,honey

　　C. O.K.,honey

　　D. All right,honey

　　答案：A　二、阅读理解

　　The "balance of nature" is not an empty phrase. Nature provides a population to occupy a suitable environment and cuts down surplus population to fit the available food supply. One means of reducing surplus population is predators(食肉动物); others are parasites(寄生虫)and diseases. Also, population density produces nervous disorders and even drives animals to mass migrations, like the lemmings(旅鼠)of Norway who plunge into(跳入)the sea.

　　That predators populations increase to control other animals has long been known. Many years ago, the Hudson's Bay Company records revealed that the fox population went up and down about a year after the rabbit population had gone up and down.

　　Sometimes a situation occurs in which the predators population is reduced to a level below that which nature can readily replace. On Valcour Island in Lake Champlain(New York), a costly campaign resulted in the elimination of predatory animals only to have birds and small animals—including grouse(松鸡)and hares, popular game(猎物)—increase for four years afterward. Then lacking predator control, nature resorted to cut down these populations.

　　Jamaica had an example of nature's persistence in providing animals for existing habits. Sugar planters, about 75 years ago, imported mongooses to control rats. The mongooses killed off the rats and, with plentiful food, multiplied. Rats became scarce and the mongooses ate lambs, kids, puppies(小狗), and wildlife. Eventually, food became scarce and the mongoose's population declined.

　　11. According to the article, the phrase "balance of nature" means ______.

　　A. the relation of wildlife to man

　　B. the adequacy of the food supply to support its animal population

　　C. the ratio of small game to predators

　　D. the destruction of predators

　　答案：B

　　12. The effect of predator control over other animal populations ______.

　　A. has just been learned B. is not recent knowledge

　　C. is not important now D. was learned in Norway

　　答案：B

　　13. When predators control is not available, nature brings animal population into balance by resorting to ______.

　　A. hunters B. diseases

　　C. storms and flood D. forest fires

　　答案：B

　　14. When the mongooses in Jamaica killed off the rats, they ______.

　　A. quickly died for lack of food B. attacked humans

　　C. became problems themselves D. ate the sugar crop

　　答案：C

　　15. Implied but not stated: ______.

　　A. Sugar planters imported mongooses to control rats

　　B. Man should never tamper(损害)with nature

　　C. To upset the balance of nature can be troublesome

　　D. Man has complete control over nature

　　答案：C