Because we can feel that things are very heavy, we think of “weight as being a fixed quality, but it is not really fixed at all. If you could take a one-pound packet of butter 4 000 miles out from th 题目和参考答案——青夏教育精英家教网—

题目内容

Because we can feel that things are very heavy, we think of “weight” as being a fixed quality, but it is not really fixed at all. If you could take a one-pound packet of butter 4 000 miles out from the earth, it would weigh only a quarter of a pound.

Why would things weigh only a quarter as much as they do at the surface of the earth if we took them 4 000 miles out into space? The reason is this: all objects have a natural gravity(引力)for all other objects; this is called gravitational attraction(万有引力). But this power of attraction between two objects gets weaker as they are farther apart. When the butter was at the surface of the earth, it was 4 000 miles from the center. When we took the butter 4 000 miles out, it was 8 000 miles from the center, which is twice the distance.

If you double the distance between two objects, their gravitational attraction decreases “two times two”. If you make the distance three times far away, it gets nine times weaker (three times three). If you make it four times far away, it gets sixteen times weaker (four times four) and so on.

So this is one of the first things we need to remember: the weight of an object in space is not the same as its weight on the surface of the earth.

1.Which of the following is right?

A.A thing has the same weight everywhere in space.

B.“Weight” is a fixed quality in an object.

C.“Weight” is not a quality in an object.

D.A thing’s weight changes with its place in space.

2.There is 　　 between 　　 .

A. gravity; objects?　　　　　　　　　　　　　　　　　　 B.power; all objects

C.gravity; the two objects only?　　　　　　　　　　 D.power; two things

3.A 400 pound man-made satellite is sent to the place 2 000 miles out from the earth. Its weight is about 　　 .

A.200 pounds　　　　　　　　　　　　　　　　　　　　　　　　 B.a half pounds

C.100 pounds 　　　　　　　　　　　　　　　　　　　　　　　　 D.300 pounds

4.If we make the distance between objects five times as far away, 　　 .

A. it gets twenty-five times weaker

B.their weight gets twenty-five times weaker

C.their gravity gets twenty-five times weaker

D.their gravity gets twenty-five times stronger

5.After reading this passage, we should remember that we know the usual weight of a thing 　　 .

A. because it is on the surface of the earth

B.because it is weighed

C.because it is in space

D.because it is not far away from the earth

答案：D;A;A;C;A
解析：

1、此题考查中心归纳。从文章内容来看，一个物体的重量并非一成不变，受地球万有引力的影响，物体的重量随其在宇宙中位置的变化而变化。

2、此题考查细节事实。由文章第二段得知，所有的物体与其他物体间都有引力。

3、从第二段话中可以算出此结果.

4、此题考查细节推理。由文章第三段知，当两物体的距离变为原来的5倍时，两物体的万有引力就会比原来减弱25倍。

5、通观全文可以知道,我们是以地球表面为出发点的.

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September 28, 2006

Dear Jenny,

　　We have been talking to each other mostly through e-mails. This time, I choose to write a letter instead, as I feel like writing English with a pen. When I write with a pen, it seems easier for me to express my thoughts and feelings.

　　It is almost a month since school started. I really like being in high school. It's exciting. There are so many new things to do and so many new friends to meet.

　　High school students in China live a busy but colourful life. We have to work hard for the National College Entrance Examinations, which will take place in less than three years.

　　Now I have a large group of friends. We take all of our classes together in the same classroom. It's good to have friends to study with because we can help each other. I'm pretty good at English, so many guys ask me for help with their English. I don't mind. After school we usually go to play sports for a little while. Sometimes we take a walk down the river or visit some bookstores. We have to be back for evening class by 7:30.

　　Among my classmates, there is one guy named Dazhi, whom I like most. I met him on the sports ground one afternoon. He was sitting alone, deep in thought. I went up to him and introduced myself. I learned from our talk that he is from the countryside some two hundred kilometers away from Shijiazhuang. Dazhi's fascinating life attracts me very much, because it has been very different from mine. As time goes on, I find we have many similar interests and hobbies. I think I can learn a lot from him. Being friends means learning from each other. Don't you think so?

　　I have invited Dazhi to come to my home for dinner this Sunday. I think we will have a good time together. We will have lots of things to share（分享）with each other. I am quite happy with this growing friendship. It has opened a door to many new experiences.

　　I must go back to class now.

　　Best wishes!

Yours friendly,

Li Ming

(1)In the passage, the author mainly wants to tell _________.

[　　]

A．the new things he has learned in high school

B．why he writes this letter with a pen

C．friends should learn from each other

D．his school life and how he developed a friendship with Dazhi

(2)Which of the following is NOT true according to the passage?

[　　]

A．The writer can express his ideas more freely with a pen than through e-mails.

B．The writer is willing to help others with their English.

C．The writer shares some interests and hobbies with Dazhi.

D．The writer got to know Dazhi through e-mails.

(3)The underlined word“fascinating”(in Paragraph 5) probably means _________.

[　　]

(4)From the passage we can know that the author __________.

[　　]

A．is sure to pass the National College Entrance Examinations

B．will experience a lot of new things in this school

C．is quite used to the life in the countryside

D．only works hard at his lessons all day long

假如英语课上老师要求同学们交换修改作文，请你修改你同桌写的以下作文。文中有10

处错误，要求你在错误的地方增加、删除或修改某个单词。

增加：在缺词处加一个漏字符号(∧)，并在其下面写上该加的词。

删除：把多余的词用斜线(＼)划掉。

修改：在错的词下划一横线，并在该词下面写上修改后的词。

注意：1. 每处错误及其修改均仅限一词。

2. 只允许修改10处，多者(从11处起)不计分。

Dear Jim,

How is everything going? Today I'd like to tell you something more about our school sports meeting. It was holding on Oct.6, which was a fine day. There were over 1,000 students and teachers attend it. Wang Lin, a student from my class won the 100-meter race. He finish the race in 12.6 seconds and broke in the school record. The sports meeting was really success. That was because we were all trying to do my best. Although I was not one of the winner, I was proud of that we had done. Looking forward to receive your letter.

Yours,

Li Ping

Communication technologies are far from equal when it comes to conveying the truth. The first study to compare honesty across a range of communications media has found that people are twice as likely to tell lies in phone conversations as they are in emails. The fact that emails are automatically recorded—and can come back to haunt(困扰) you—appears to be the key to the finding.

Jeff Hancock of Cornell University in Ithaca, New York, asked 30 students to keep a communications diary for a week. In it they noted the number of conversations or email exchanges they had lasting more than 10 minutes, and confessed to how many lies they told. Hancock then worked out the number of lies per conversation for each medium. He found that lies made up 14 percent of emails, 21 percent of instant messages, 27 percent of face-to-face interactions and an astonishing 37 percent of phone calls.

His results, to be presented at the conference on human-computer interaction in Vienna, Austria, in April, have surprised psychologists. Some expected emailers to be the biggest liars, reasoning that because deception makes people uncomfortable, the detachment(非直接接触) of emailing would make it easier to lie. Others expected people to lie more in face-to-face exchanges because we are most practiced at that form of communication.

But Hancock says it is also crucial whether a conversation is being recorded and could be reread, and whether it occurs in real time. People appear to be afraid to lie when they know the communication could later be used to hold them to account, he says. This is why fewer lies appear in email than on the phone.

People are also more likely to lie in real time—in an instant message or phone call, say—than if they have time to think of a response, says Hancock. He found many lies are spontaneous(脱口而出的) responses to an unexpected demand, such as: “Do you like my dress?”

Hancock hopes his research will help companies work out the best ways for their employees to communicate. For instance, the phone might be the best medium for sales where employees are encouraged to stretch the truth. But given his result, work assessment, where honesty is a priority, might be best done using email.

66. Hancock’s study focuses on ________.

A. the consequences of lying in various communications media

B. the success of communications technologies in conveying ideas

C. people’s preference in selecting communications technologies

D. people’s honesty levels across a range of communications media

67. Hancock’s research finding surprised those who believed that ________.

A. people are less likely to lie in instant messages

B. people are unlikely to lie in face-to-face interactions

C. people are most likely to lie in email communication

D. people are twice as likely to lie in phone conversations

68. According to the passage, why are people more likely to tell the truth through certain media of communication?

A. They are afraid of leaving behind traces of their lies

B. They believe that honesty is the best policy

C. They tend to be relaxed when using those media

D. They are most practiced at those forms of communication

69. According to Hancock, the telephone is a preferable medium for promoting sales because ________.

A. salesmen can talk directly to their customers

B. salesmen may feel less restrained to exaggerate

C. salesmen can impress customers as being trustworthy

D. salesmen may pass on instant messages effectively

70. It can be inferred from the passage that ________.

A. honesty should be encouraged in interpersonal communications

B. more employers will use emails to communicate with their employees

C. email is now the dominant medium of communication within a company

D. suitable media should be chosen for different communication purposes

One of my fondest Christmas memories was also one of our family’s bleakest（最令人沮丧的）.We were just little kids , and on Christmas Day mom 36 us all around her to tell us , 37 ,that there would be no presents because all we really wanted was to 38 for our daddy.He was very sick . I don’t remember anything else except four little girls surrounding my mother, crying 39 a miracle（奇迹）

At that very moment ,someone 40 loudly on the door. 41 Behind him was a merry group of soldiers from the Army base where my father 42 as a minister . News had 43 that we were in trouble ,and his colleagues knew we needed some 44 .

With all the excitement ,even my dad 45 in a blanket to keep warm , came down and sat in front of a roaring fire in our room to watch his children be 46 by good Samaritants（乐善好施的人）. The presents were unwrapped , and we girls 47 packages and found a doll each and four board games.

What is 48 to me is that I don’t even remember what sickness my father was suffering from.I 49 remember an evening of laughter and 50 There were no expensive toys but 51 moments of friendship and fun given by young men who knew that a family was having a(n) 52 time . They gave their time and their 53 to little children who needed to laugh.

The most important thing in life aren’t things . And what about the true 54 of holidays ? I hope we all are able to remember a thing about the holidays that stirs(搅动)our heart , that isn’t really a thing at all, but the smile on a child’s face because we take a moment to hug or 55 a tear.

1.A requested B commanded C gathered D recommended

2.A in tears B in doubt C in silence D in surprise

3.A apply B pray C pay D ask

4.A to B with C for D in

5.A knocked B beat C tapped D struck

6.A Fighting B Shooting C Running D Following

7.A charged B existed C governed D worked

8.A expanded B spread C distributed D disappeared

9.A confidence B cheer C trust D wisdom

10.A dressed B attached C trapped D wrapped

11.A persuaded B saved C taught D entertained

12.A discovered B sought C unfolded D packed

13.A strange B frightening C useful D encouraging

14.A seldom B just C even D hardly

15.A happiness B surprise C doubt D anxiety

16.A shocking B priceless C worthless D beneficial

17.A relaxing B great C ordinary D rough

18.A praise B treatment C attention D response

19.A theme B spirit C principle D theory

20.A wipe away B deal with C write about D burst into

It was the summer of 1965. DeLuca, then 17, visited Peter Buck, a family friend. Buck asked DeLuca about his plans for the future. “I’m going to college, but I need a way to pay for it,” DeLuca recalls saying. “Buck said, ‘You should open a sandwich shop.’”

That afternoon, they agreed to be partners. And they set a goal: to open 32 stores in ten years. After doing some research, Buck wrote a check for $1000. DeLuca rented a storefront (店面) in Connecticut, and when they couldn’t cover their start-up costs, Buck kicked in another $1000.

But business didn’t go smoothly as they expected. DeLuca says, “After six months, we were doing poorly, but we didn’t know how badly, because we didn’t have any financial controls.” All he and Buck knew was that their sales were lower than their costs.

DeLuca was managing the store and going to the University of Bridgeport at the same time. Buck was working at his day job as a nuclear physicist in New York. They’d meet Monday evenings and brainstorm ideas for keeping the business running. “We convinced ourselves to open a second store. We figured we could tell the public, ‘We are so successful, we are opening a second store.’” And they did—in the spring of 1966. Still, it was a lot of learning by trial and error.

But the partners’ learn-as-you-go approach turned out to be their greatest strength. Every Friday, DeLuca would drive around and hand-deliver the checks to pay their suppliers. “It probably took me two and a half hours and it wasn’ t necessary, but as a result, the suppliers got to know me very well, and the personal relationships established really helped out,” DeLuca says.

And having a goal was also important. “There are so many problems that can get you down. You just have to keep working toward your goal,” DeLuca adds.

DeLuca ended up founding Subway Sandwich, the multimillion-dollar restaurant chain.

1.DeLuca opened the first sandwich shop in order to ____.

A. support his family B. pay for his college education

C. help his partner expand business D. do some research

2.Which of the following is true of Buck?

A. He put money into the sandwich business.

B. He was a professor of business administration.

C. He was studying at the University of Bridgeport.

D. He rented a storefront for DeLuca.

3.What can we learn about their first shop?

A. It stood at an unfavorable place.

B. It lowered the prices to promote sales.

C. It made no profits due to poor management

D. It lacked control over the quality of sandwiches

4.They decided to open a second store because they ___.

A. had enough money to do it.

B. had succeeded in their business

C. wished to meet the increasing demand of customers

D. wanted to make people believe that they were successful

5.What contribute most to their success according to the author?

A. Learning by trial and error. B. Making friends with suppliers.

C. Finding a good partner. D. Opening chain stores.

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