E Suppose you are reading a book. Suppose, too, you suddenly close your eyes. Can you still see the book? “Of course not, you will say. But can you tell why? You would probably say, “When I close my eyes, my eyesight cannot get out of my eyes to get to the book. But this explanation is wrong. You cannot see any object unless light from that object gets into your eyes. Some of the things you see give off light of their own. The sun, the stars, a lighted lamp are examlpes that can be seen by their own light. Such things are luminous. Most of the things you see are not giving off light of their own. They are simply reflectinglight that falls on them from the sun or some other luminous body. The moon, for example, does not give off any light of its own. It is nonluminous. You see it because sunlight falls on it and some of it reflects in your direction. So moonlight is only secondhand sunlight. When you look at a book, it sends to your eyes some of the light which falls on it, and you see the book. If light could be kept out from where you are so that there would be no light for the book to reflect, then you could not see the book even with your eyes wide open. Light travels so fast that the time in which it travels from the book you are reading to your eyes is so short as if there were no time at all. Light reaches us from the moon, which is about 380, 000 kilometres away, in only a little more than a second. 17.You can not see the book when you close your eyes, because . A. your eyes are too close to it B. closed eyes are out of sight C. your eyesight cannot get to it D. the light from it cannot get into your eyes 18.The word “luminous means . A. visible B. lighted C. giving off light D. sunlight 19.Light travels about kilometres per second. A. 380,000 B. 300,000 C. 400,000 D. 190,000 20.Which of the following is TRUE? . A. All the things you can see give off light. B. Light from the book is much shorter than that from the moon. C. The moment you open your eyes the light from the book travels to your eyes. D. Light travels so fast that there is no time for you to read. 查看更多

 

题目列表(包括答案和解析)

阅读下面短文,从每题所给的四个选项中选出最佳答案.

  Suppose you want to study English but you are not sure where there are classes of English. It happens that you see two advertisements in the newspaper. Please read them and then answer questions.

Linelon College of English (LCE)

  Classes of foreign students at all levels 3 months, 6 months, 9 months and one year course open all year. Small class(12 students at the most), library, language lab and listening centre, accommodations(膳宿供应)with selected families 25 minutes' ride from London.

  Course fees(费用)for English for one year are $ 1380 with reduction for short periods of study.

  State-run(国办的)English language centre(SELC)Britain's leading state-run English language centre.

  * Held from June to August for foreigners

  * Classes at all levels

  * Preparation for public exams

  * Accommodation in selected families

  * Pleasant seaside town

  * Very full social programme

  *English through activity e. g. art, photography, etc.

  * Special English e. g. medical, business, etc.

  * Advice service for university and college students

  * Teachers course in July

(1)_________ can study in these two classes.

[  ]

A. Only foreign beginners

B. Only foreign advanced learners

C. Both foreigners and native speakers

D. Foreigners at all levels

(2)When you study there, you will live ________.

[  ]

A. at school

B. in hotels

C. with the family you choose

D. with the teachers

(3)If you are a teacher and would like to improve your English ,where can you learn English?

[  ]

A. In LCE.
B. In SELC.
C. In either of them.
D. Nowhere.

(4)If you have to stay abroad for a year and you want to improve English, which course will you choose?

[  ]

A. LCE.
B. SELC.
C. Either.
D. Neither.

(5)In which way are these two classes like each other?

[  ]

A. they both have many social activities.

B. There are special English courses.

C. You have to live with families when you study.

D. You can ask advice of English study from either of them.

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根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

    1  .Since that time, we've provided people like you-teachers, doctors, salespeople, full-time parents-with a way of having a great time, challenging themselves and reconnecting with family and friends.

  The non-stop routine of everyday life-answering e-mails, sitting in staff meetings -can have a dulling effect on people's senses.  2  .Otherworld provides just such an opportunity.It is an experience participants cherish and remember for years afterwards.

  Coming to Otherworld is like stepping into the pages of an adventure novel.You'll meet a host of characters, portrayed by our staff, who'll start bringing the world to life.Mysteries will begin to unfold around you.  3  .You' ll see amazing sights and do things you never dreamed possible.

  Suppose you were traveling to a foreign country.When you arrived, you might read a guidebook or visit a tourist booth to familiarize yourself with the laws and customs of the place you were visiting.  4  .Before the weekend, you'll receive a handbook, explaining Otherworld's customs and conventions.When you arrive at the weekend itself, there'll be a short briefing to review the handbook's contents.

  Then you and your group are taken to the front door of the Inn at World's Edge.You'll see candles on each of the tables.A fire will burn in the fireplace.At many of the tables, people will sit talking, arguing, and laughing.These people are our staff volunteers.  5  .But now they are all costumed and playing roles as citizens of the village of World's Edge.

A.And at that moment, the adventure begins.

B.Otherworld Adventure Weekend starts in much the same way.

C.They are the same people who welcomed you and helped you unload bags.

D.Maybe some of the local people would talk to you, telling you about nearby attractions..

E.Otherworld was founded in 1992 with an idea:to give people an extraordinary adventure.

F.Therefore, everybody needs a relaxing weekend - a good adventure to refresh themselves.

G.As you and your friends work together to solve them, you'll find yourselves challenged in ways that are exciting, unexpected and fun.

查看答案和解析>>

阅读下面短文,从每题所给的四个选项中选出最佳答案.

  Suppose you want to study English but you are not sure where there are classes of English. It happens that you see two advertisements in the newspaper. Please read them and then answer questions.

Linelon College of English (LCE)

  Classes of foreign students at all levels 3 months, 6 months, 9 months and one year course open all year. Small class(12 students at the most), library, language lab and listening centre, accommodations(膳宿供应)with selected families 25 minutes' ride from London.

  Course fees(费用)for English for one year are $ 1380 with reduction for short periods of study.

  State-run(国办的)English language centre(SELC)Britain's leading state-run English language centre.

  * Held from June to August for foreigners

  * Classes at all levels

  * Preparation for public exams

  * Accommodation in selected families

  * Pleasant seaside town

  * Very full social programme

  *English through activity e. g. art, photography, etc.

  * Special English e. g. medical, business, etc.

  * Advice service for university and college students

  * Teachers course in July

(1)_________ can study in these two classes.

[  ]

A. Only foreign beginners

B. Only foreign advanced learners

C. Both foreigners and native speakers

D. Foreigners at all levels

(2)When you study there, you will live ________.

[  ]

A. at school

B. in hotels

C. with the family you choose

D. with the teachers

(3)If you are a teacher and would like to improve your English ,where can you learn English?

[  ]

A. In LCE.
B. In SELC.
C. In either of them.
D. Nowhere.

(4)If you have to stay abroad for a year and you want to improve English, which course will you choose?

[  ]

A. LCE.
B. SELC.
C. Either.
D. Neither.

(5)In which way are these two classes like each other?

[  ]

A. they both have many social activities.

B. There are special English courses.

C. You have to live with families when you study.

D. You can ask advice of English study from either of them.

查看答案和解析>>

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

    1  .Since that time, we've provided people like you-teachers, doctors, salespeople, full-time parents-with a way of having a great time, challenging themselves and reconnecting with family and friends.

  The non-stop routine of everyday life-answering e-mails, sitting in staff meetings-can have a dulling effect on people's senses.  2  .Otherworld provides just such an opportunity.It is an experience participants cherish and remember for years afterwards.

  Coming to Otherworld is like stepping into the pages of an adventure novel.You'll meet a host of characters, portrayed by our staff, who'll start bringing the world to life.Mysteries will begin to unfold around you.  3  .You' ll see amazing sights and do things you never dreamed possible.

  Suppose you were traveling to a foreign country.When you arrived, you might read a guidebook or visit a tourist booth to familiarize yourself with the laws and customs of the place you were visiting.  4  .Before the weekend, you'll receive a handbook, explaining Otherworld's customs and conventions.When you arrive at the weekend itself, there'll be a short briefing to review the handbook's contents.

  Then you and your group are taken to the front door of the Inn at World's Edge.You'll see candles on each of the tables.A fire will burn in the fireplace.At many of the tables, people will sit talking, arguing, and laughing.These people are our staff volunteers.  5  .But now they are all costumed and playing roles as citizens of the village of World's Edge.

A.And at that moment, the adventure begins.

B.Otherworld Adventure Weekend starts in much the same way.

C.They are the same people who welcomed you and helped you unload bags.

D.Maybe some of the local people would talk to you, telling you about nearby attractions..

E.Otherworld was founded in 1992 with an idea:to give people an extraordinary adventure.

F.Therefore, everybody needs a relaxing weekend - a good adventure to refresh themselves.

G.As you and your friends work together to solve them, you'll find yourselves challenged in ways that are exciting, unexpected and fun.

查看答案和解析>>

Thirty-two people watched kitty Genovese being killed right beneath their windows. She was their neighbor. Yet none of the 32 helped her. Not one even called the police. Was this in gunman cruelty? Was it lack of feeling about one's fellow man?

Not so, say scientists John Barley and Bib Fatane. These men went beyond the headlines to probe(探查) the reasons why people didn't act. They found that a person has to go through two steps before he can help. First he has to notice that is an emergency(紧急情况).

  Suppose you see a middle-aged man fall to the side-walk. Is he having a heart attack? Is he in a coma (昏迷) from diabetes(糖尿病)? Or is he about to sleep off a drunk?

Is the smoke coming into the room from a leak in the air conditioning? Is it steam pipes? Or is it really smoke from a fire? It's not always easy to tell if you are faced with a real emergency.

  Second, and more important, the person faced with an emergency must feel personally responsible. He must feel that he must help, or the person won't get the help he needs.

The researchers found that a lot depends on how many people are around. They had college students in to be tested. Some came alone. Some came with one or two others. And some came in large groups. The receptionist started them off on the tests. Then she went into the next room. A curtain divided the testing room and the room into which she went. Soon the students heard a scream, the noise of file cabinets falling and a cry for help. All of this had been pre-recorded on a tape-recorder.

Eight out of ten of the students taking the test alone acted to help. Of the students in pairs, only two out of ten helped. Of the students in groups, none helped.

In other words, in a group, Americans often fail to act. They feel that others will act. They, themselves, needn't. They do not feel any direct responsibility.

Are people bothered by situations where people are in trouble? Yes. Scientists found that the people were emotional, they sweated, they had trembling hands. They felt the other person's trouble. But they did not act. They were in a group. Their actions were shaped by the actions of those they were with.

1.The purpose of this passage is_________.

A.to explain why people fail to act in emergencies

B.to explain when people will act in emergencies

C.to explain what people will do in emergencies

D.to explain how people feel in emergencies

2.Which of the following is NOT true?

A.When a person tries to help others, he must be clear that there is a real emergency.

B.When a person tries to help others, he should know whether hey are worth his help.

C.A person must take the full responsibility for the safety of those in emergencies if he wants to help.

D.A person with a heart attack needs the most.

3. The researchers have conducted an experiment to prove that people will act in emergencies when__________.

A.they are in pairs  

B.they are in groups

C.they are alone    

D.they are with their friends

4.The main reason why people fail to act when they stay together is that _________.

A.they are afraid of emergencies

B.they are reluctant to get themselves involved

C.others will act if they themselves hesitate

D.they do not have any direct responsibility for those who need help

 

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