Children start out as natural scientists, eager to look into the world around them. Helping them enjoy science can be easy; there’s no need for a lot of scientific terms or expensive lab equipment. You only have to share your children's curiosity(好奇). Firstly, listen to their questions. I once visited a classroom of seven-year-olds to talk about science as a job. The children asked me “textbook questions” about schooling, salary（薪水） and whether I liked my job. When I finished answering, we sat facing one another in silence. Finally I said, “Now that we're finished with your lists, do you have questions of your own about science?”

　　After a long pause, a boy raised his hand, “Have you ever seen a grasshopper (蚱蜢) eat? When I try eating leaves like that, I get a stomachache. Why?”?

　　This began a set of questions that lasted nearly two hours. ?

　　Secondly, give them time to think. Studies over the past 30 years have shown that, after asking a question, adults typically wait only one second or less for an answer, no time for a child to think. When adults increase their “wait time” to three seconds or more, children give more logical(符合逻辑的), complete and creative answers.

　　Thirdly, watch your language. Once you have a child involved in a science discussion, don't jump in with “That’s right” or “Very good”. These words work well when it comes to encouraging good behavior(行为). But in talking about science, quick praise can signal that discussion is over. Instead, keep things going by saying, “That’s interesting” or “I’d never thought of it that way before”, or coming up with more questions or ideas.?

　　Never push a child to “Think”. It doesn’t make sense, children are always thinking, without your telling them to. What’s more, this can turn a conversation into a performance. The child will try to find the answer you want, in as few words as possible, so that he will be a smaller target (目标) for your disagreement.?

　　Lastly, show; don’t tell. Real-life impressions of nature are far more impressive than any lesson children can learn from a book or a television program. Let children look at their fingertips through a magnifying glass(放大镜), and they’ll understand why you want them to wash before dinner. Rather than saying that water evaporates (蒸发), set a pot of water to boil and let them watch the water level drop.

46. According to the passage, children are natural scientists, and to raise their interest, the most important thing for adults to do is              .??

　　 A. to let them see the world around

　　 B. to share the children's curiosity?

　　 C. to explain difficult phrases about science

　　 D. to supply the children with lab equipment?

47. In the last sentence of the first paragraph, the word “lists” could best be replaced by                       .

　　 A. any questions 　　　　　　　　　　B. any problems ?　

　　 C. questions from textbooks　　　　　　D. any number of questions?

48. According to the passage, children can answer questions in a more logical, complete and creative way if adults                      .?

　　 A. ask them to answer quickly.

　　 B. wait for one or two seconds after a question.?

　　 C. tell them to answer the next day.

　　 D. wait at least for three seconds after a question.?

49. In which of the following paragraph(s) does the author tell us what to say to encourage children in a science discussion? ?

　　 A. The second and third. 　　　　　　　B. The fourth and fifth.?

　　 C. The fifth and sixth. 　　　　　　　　D. The seventh.

50. The author mentions all of the following techniques for adults to share with their children's curiosity except that adults should                      .?

　　 A. tell their children stories instead of reciting(背诵) facts?

　　 B. offer their children chances to see things for themselves?

　　 C. be patient enough when their children answer questions?

　　 D. encourage their children to ask questions of their own?

I have learnt a lot about Chinese life and culture while teaching in China and found them very interesting．

First, family life is quite 　36 in China from that in the USA． In the USA, many young people 　37 home after they finish their education and start working． However, in China, it is 　38 for people to live with their parents until they get married． 　39 , many of my Chinese friends told me that their 40 lived with them and helped take care of them when they were children． It seems that Americans think independence is more important 　41 the Chinese think family relationships are more important．

Bargaining is another 　42 that I have tried to learn． In the USA, prices are 　43 and you can’t ask for a lower price． However in some small Chinese stores and tourist places, you are 　44 to bargain． My Chinese friends taught me to ask for 40 percent or 50 percent 　45 the original price． If the salesperson doesn’t agree to my price, I should 　46 to leave and he might let me come back and sell me the item． It is a skill that you have to 　47 if you live in China．

Tipping hasn’t been easier to 　48 ． In the USA, many people in the service 　49 want to get 　50 money for serving customers． Tipping is not a part of Chinese culture． 　51 I tried to tip a taxi driver． He looked a little 　52 and refused to take the money．

In dinners, perhaps what surprises an American visitor most is that some of the Chinese hosts like to put food into the plates of their 　53 ． Actually, this is a 　54 of true friendship and politeness． My Chinese friend told me if I didn’t want to eat it, I should just 　55 the food in the plate．

36．A．unique　　　　　　　　 B．different　　　　　　　　 C．private　　　　　　　　　 D．harmonious

37．A．come　　　　　　　　 B．build　　　　　　　　　　　 C．leave　　　　　　　　　　 D．abandon

38．A．regular　　　　　　　 B．true　　　　　　　　　　　 C．common　　　　　　　　 D．usual

39．A．Also　　　　　　　　　 B．However　　　　　　　　 C．Therefore　　　　　　　 D．Although

40．A．parents　　　　　　　 B．relatives　　　　　　　　 C．babysitters　　　　　　 D. grandparents

41．A．while　　　　　　　　 B．since　　　　　　　　　　 C．when　　　　　　　　　　 D．as

42．A．way　　　　　　　　　 B．custom　　　　　　　　　 C．method　　　　　　　　　 D．habit

43．A．made　　　　　　　　 B．agreed　　　　　　　　　 C．charged　　　　　　　　 D．set

44．A．expected　　　　　　 B．taught　　　　　　　　　　 C．suggested　　　　　　　 D．required

45．A．up　　　　　　　　　　 B．away　　　　　　　　　　 C．off　　　　　　　　　　　　 D．on

46．A．promise　　　　　　　 B．pretend　　　　　　　　　 C．decide　　　　　　　　　 D．hope

47．A．tolerate　　　　　　　 B．understand　　　　　　 C．practise　　　　　　　　 D．consider

48．A．adjust to　　　　　　 B．turn to　　　　　　　　　 C．refer to　　　　　　　　　 D．stick to

49．A．area　　　　　　　　　 B．department　　　　　　 C．branch　　　　　　　　　 D．industry

50．A．easy　　　　　　　　　 B．extra　　　　　　　　　　　 C．pocket　　　　　　　　　 D．prize

51．A．Often　　　　　　　　 B．Once　　　　　　　　　　 C．Sometimes　　　　　　 D．Before

52．A．excited　　　　　　　 B．satisfied　　　　　　　　 C．frightened　　　　　　　 D．confused

53．A．own　　　　　　　　　 B．children　　　　　　　　 C．neighbors　　　　　　　 D．guests　

54．A．signal　　　　　　　　 B．mark　　　　　　　　　　 C．sign　　　　　　　　　　　 D．feature

55．A．leave　　　　　　　　　 B．remain　　　　　　　　　 C．put　　　　　　　　　　　　 D．taste

All the recent news on AIDS is bad．The death of Rock Hudson ___1____ public concern about the ___2____ almost to the point of panic（紧张）．Now general concern is ___3____ not so much on personal risk but on the growing realization ____4_____ this disease is having a strong effect ___5_____ our society in a number of ways．

　　 For one thing, it is ____6_____ money and other resources．AIDS patients require long-term care in hospital．The Centre for Disease Control in Atlanta calculates that hospital expenditures for the first 10,000 AIDS patients were about $1．4 billion．The ____7____ economic cost to the nation of AIDS cases is estimated to ___8____ to $6 billion in health care, disability, and ___9___ productivity．

　　 Private insurers（保险人） were unprepared for the crisis（危机） ____10____ the deadly disease hits mainly young people．It is becoming increasingly ___11_____ for those in high-risk groups to get health and life insurance(保险), and in the __12_____ of private coverage, public funds（资金） must be used．In ___13____, many AIDS victims are ____14_____ by disapproving or frightened friends and family, without employment and ___15_____ need of emotional and psychological ?????___16_____．

　　 There is also bad news on the medical ___17____．In spite of a stepped-up research program there is no ____18___ of a forthcoming breakthrough(突破) to a cure．

　　 Yet the physicians and others continue to work and to hope．Others not directly ____19___ can help by giving support to public funding for research, hospital and support services．A public resolve(决心) to provide care now and an eventual cure for those who suffer is the best ____20___．

1．A．caused　　 B．raised　　　　 C．resulted　　　　 D．rose

2．A．disease　　 B．question　　　　 C．disaster　　　　 D．sickness

3．A．directed　 B．paid　　　　　　 C．focused 　　　　 D．devoted

4．A．when 　　　　 B．as　　　　　　 C．which　　　　 D．that

5．A．to 　　　　 B．for　　　　　 C．on　　　　　　 D．with

6．A．spending　 B．absorbing　　　　 C．connecting　　 D．emphasizing

7．A．general　　 B．common　　　　 C．complete　　　　 D．total

8．A．add　　　　 B．come　　　　　　 C．equal　　　　 D．sum

9．A．lost 　　　　 B．increased　　　　 C．missing　　　 D．gone

10．A．since　　　　 B．unless　　　　 C．although　　　　 D．before

11．A．available　　 B．profitable 　 C．unavoidable　　　 D．difficult

12．A．plenty 　 B．absence　　　 C．attendance　　 D．appearance

13．A．conclusion B．fact　　　　　　 C．addition　　　　 D．short

14．A．accepted　　 B．welcomed 　　 C．cared 　　　　 D．rejected

15．A．for　　　 B．in　　　　　　 C．with　　　　　　 D．at

16．A．satisfaction B．support　　　 C．convenience　　　 D．courage

17．A．field　　　　 B．area　　　　　　 C．world　　　　 D．front

18．A．hope　　　　 B．signal　　　　 C．sight　　　　　　 D．sign

19．A．interested B．observed　　　　 C．studied　　　 D．involved(卷入)

20．A．answer　　 B．response　　　　 C．key　　　　　 D．movement

____, the bus started at once.　
A. The signal was given B. The signal giving

C. The signal given D. When the signal given