Twenty years ago,kids in school had never even heard of the Internet.Now,I'll bet you can't find a　36　person in your school who hasn't　37　heard of it.In fact,many of us use it on a regular basis and can even use it at　38　.The “net” in Internet really stands for network.A network is two or more computers　39　together so that information can be?　40　?or sent from one computer to　41　.The Internet is a vast　42　for all types of information.?You may enjoy using it to do 　43　for a school project,downloading your favorite songs or　44　 with friends and family.Information can be found　45 web pages that companies, organizations, and individuals(个人)create.It's like a giant bulletin board that the whole world uses!But since anyone can put 　46　on the Internet,you also have to be careful and use your best　47　and a little common sense.?

Just　48　 you read something on a piece of paper someone puts on a bulletin board doesn't mean that it's good information,or even correct, for that matter.You have to be sure that whoever posted the information knows what they're talking about,　49　 if you're doing research!But what if you're just e?mailing people?You still have to be very 　50　 if you've never met the person that you're communicating with online.You could be doing something　51　!You should never give out any　52　 information to someone you don't know,not even your name!And just like you can't　53　the information on every website out there.You can't　54　 on what strangers you “meet”on the Internet tell you either.In the same way that you could　55　things about yourself to tell someone,someone else could do the same to you!?

36. A. stupid   B. single  C. common     D. clever?

37. A. at least B. at mostC. at last D. at first?

38. A. school  B. Home C. work   D. hospital?

39. A. met      B. Communicated   C. joined D. connected?

40. A. shared  B. found  C. made  D. chosen?

41. A. other    B. the other    C. another      D. others?

42. A. material       B. resource     C. source D. matter?

43. A. homework   B. housework  C. research     D. experiments?

44. A. playing B. talking       C. meeting      D. communicating?

45. A. through       B. across C. by      D. on?

46. A. something    B. anything     C. everything  D. nothing?

47. A. wisdom       B. judgmentC. Courage  D. confidence?

48. A. because       B. when  C. where D. what?

49. A. specially      B. especially   C. naturally    D. strangely

50. A. careful B. wise    C. suspicious   D. confident?

51. A. exciting       B. interesting  C. suspicious   D. confident?

52. A. social   B. personal     C. general       D. special?

53. A. respect B. consult       C. send    D. believe?

54. A. rely      B. believe       C. trust    D. base?

55. A. make of       B. make from C. make out    D. make up??

We are warned by our teachers not to waste time because time 21 will never return. I think it quite 22. What does time look 23? Nobody knows, and we can’t see it or touch it and no 24 of money can buy it. Time is abstract(抽象的), so we have to  25about it.

   Time passes very quickly. Some students say they don’t have 26time to review their lessons. It is 27 they don’t know how to make use of their time. They waste it in going to theatres or playing, and 28 other useless things. Why do we study everyday? Why do we work? Why do most people 29 take buses instead of walking? The answer is very 30 .We wish to save time because time is31.

   Today we are living in the 21^st century. We 32 time as life. When a person dies, his life ends. Since life is short, we must 33 our time and energy to our study so that we 34 be able to work and live well in the future. Laziness is the 35 of time, for it not only brings us 36, but also does other 37 to us. If it is necessary for us to do our work today, 38 we do it today and not 39 it until tomorrow. Remember that time is much more 40.

1.A. lost       B. passed       C. missed       D. used

2.A. important  B. true     C. interesting  D. usual

3. A. for       B. like     C. after        D. over

4.A. amount     B. quality      C. quantity D. price

5.A. think      B. imagine  C. examine  D. check

6.A. spare      B. free     C. enough   D. much

7.A. that       B. why      C. because  D. certain

8.A. doing      B. making   C. taking       D. getting

9.A. needn’t    B. have to  C. had better   D. would rather

10.A. easy      B. simple       C. stupid       D. interesting

11.A. worthless B. priceless    C. ready        D. little

12.A. look upon B. agree        C. think        D. believe

13.A. spend     B. give     C. set      D. devote

14.A. must      B. should       C. may      D. would

15.A. helper        B. thief        C. friend       D. teacher

16.A. wealth        B. health       C. failure      D. illness

17.A. danger        B. harm     C. trouble      D. difficulty

18.A. help      B. make     C. have     D. let

19.A. keep      B. remain       C. manage   D. leave

20. A. valuable B. expensive    C. worth        D. rich

 (10·山东D篇)

Batteries can power anything from small sensors to large systems. While scientists are finding ways to make them smaller but even more powerful, problems can arise when these batteries are much larger and heavier than the devices themselves. University of Missouri(MU) researchers are developing a nuclear energy source that is smaller, lighter and more efficient.

“To provide enough power, we need certain methods with high energy density(密度)”，said Jae Kwon, assistant professor of electrical and computer engineering at MU. “The radioisotope(放射性同位素) battery can provide power density that is much higher than chemical batteries.”

Kwon and his research team have been working on building a small nuclear battery, presently the size and thickness of a penny, intended to power various micro / nanoelectromechanreal systems (M/NEMS). Although nuclear batteries can cause concerns, Kwon said they are safe.

“People hear the word ‘nuclear’ and think of something very dangerous,” he said, “However, nuclear power sources have already been safely powering a variety of devices, such as pace-makers, space satellites and underwater systems.”

His new idea is not only in the battery’s size, but also in its semiconductor(半导体). Kwon’s battery uses a liquid semiconductor rather than a solid semiconductor.

“The key part of using a radioactive battery is that when you harvest the energy, part of the radiation energy can damage the lattice structure(晶体结构) of the solid semiconductor,” Kwon said, “By using a liquid semiconductor, we believe we can minimize that problem.”

Together with J. David Robertson, chemistry professor and associate director of the MU Research Reactor, Kwon is working to build and test the battery. In the future, they hope to increase the battery’s power, shrink its size and try with various other materials. Kwon said that battery could be thinner than the thickness of human hair.

71. Which of the following is true of Jae Kwon?

A. He teaches chemistry at MU. 

B. He developed a chemical battery.

C. He is working on a nuclear energy source.

D. He made a breakthrough in computer engineering.

72. Jae Kwon gave examples in Paragraph 4_________.

A. to show chemical batteries are widely applied.

B. to introduce nuclear batteries can be safely used.

C. to describe a nuclear-powered system.

D. to introduce various energy sources.

73. Liquid semiconductor is used to _________.

A. get rid of the radioactive waste  

B. test the power of nuclear batteries.

C. decrease the size of nuclear batteries

D. reduce the damage to lattice structure.

74. According to Jae Kwon, his nuclear battery _______.

A. uses a solid semiconductor       

B. will soon replace the present ones.

C. could be extremely thin          

D. has passed the final test.

75. The text is most probably a ________.

A. science news report        B. book review   

C. newspaper ad          D. science fiction story

阅读下面短文，根据以下要求：（1）括号内汉语提示 （2）该词首字母提示（3）上下文语境提示，在每个空格内填入一个适当的英语单词使短文通顺，所填单词要求拼写正确，形式符合英语表达习惯。

Dear Peter,

I’m writing to ask whether you are able to do me a favor.         

I want to have a pen friend, ______(可望) a girl in her                               ___

early twenties, and with hobbies s      to mine. In my mind,                  __

she is someone who is      (感兴趣)in traveling, swimming,                    _  _ 

and playing table tennis. B    , it would be better for her                   _     

to have a pet dog as I have kept      at home for some                       _  

time. With such a pen friend, I think I can      (分享)                            _

with her our traveling experiences, ______ care of pets, or                        _

whatever we have in c_______. And I believe I will                              _ 

    (提高) my English by doing so and learn more about                  __   ______

her. I look forward to hearing       you soon.                            _ 

                  Best regards,                                  

Li Hua

It is found that American students spend less than 15% of their time in school. While there’s no doubt that school is important, a number of recent studies reminds us that parents are even more so. A study published earlier this month by researchers at North Carolina State University, for example, finds that parental involvement — checking homework, attending school meetings and events, discussing school activities at home — has a more powerful influence on students’ academic performance than anything about the school the students attend. Another study, published in the Review of Economics and Statistics, reports that the effort put forth by parents (reading stories aloud, meeting with teachers) has a bigger impact on their children’s educational achievement than the effort devoted by either teachers or the students themselves. And a third study concludes that schools would have to increase their spending by more than $1,000 per pupil in order to achieve the same results that are gained with parental involvement.

So parents matter. But it is also revealed in researches that parents, of all backgrounds, don’t need to buy expensive educational toys or digital devices for their kids in order to give them an advantage. They don’t need to drive their offspring (子孙，后代)to enrichment classes or test-preparation courses. What they need to do with their children is much simpler: talk.

But not just any talk. Recent research has indicated exactly what kinds of talk at home encourage children’s success at school. For example, a study conducted by researchers at the UCLA School of Public Health and published in the journal Pediatrics found that two-way adult-child conversations were six times as potent in promoting language development as the ones in which the adult did all the talking. Engaging in this reciprocal（双向的) back-and-forth gives children a chance to try out language for themselves, and also gives them the sense that their thoughts and opinions matter.

The content of parents’ conversations with kids matters, too. Children who hear talk about counting and numbers at home start school with much more extensive mathematical knowledge, report researchers from the University of Chicago. While the conversations parents have with their children change as kids grow older, the effect of these exchanges on academic achievement remains strong. Research finds that parents play an important role in what is called “academic socialization” — setting expectations and making connections between current behavior and future goals. Engaging in these sorts of conversations has a greater impact on educational accomplishment.

1.Parents are even more important than schools because ______.

A. parental involvement makes up for what schools are not able to do

B. teachers and students themselves do not put in enough effort

C. parental involvement saves money for schools and the local government

D. students may well make greater achievements with parents' attention

2.It can be inferred from the 2^nd paragraph that ______.

A. educational toys are unaffordable nowadays

B. digital devices can give children an advantage

C. some parents believe in enrichment classes

D. talking with children is a very simple task

3.The word "potent" is closest in meaning to ______.

A. powerful    B. difficult     C. necessary        D. resistant

4.Which of the following will more encourage children's success at school according to the passage?

A. Parents order their children to stop playing video games.

B. Parents discuss with their children the possible future career.

C. Parents lecture their children on getting too low marks on tests.

D. Parents introduce colleges around the US to their children.