题目内容

  The undersea world is very beautiful. Now more and more people want to dive(潜水)in the water to find the secret there. Scuba diving is a new sport today. It can take you into a wonderful undersea world.

  You will find many strange animals in the sea. Some are as large as a school bus. Many sea animals give out light in the dark and some have sharp teeth.

  During the day, there is enough light. Here, under the sea, everything is blue and green.

  When fish swim nearby, you can catch them with your hands. When you have bottles of air on your back, you can stay in deep water for a long time. However, you can't dive too deep. And you must be very careful when you dive in deep water.

  The deep sea is not an easy place to live in. It's cold, and it's dark, too. The deeper it is, the less sunlight there is. At about 3,000 feet, there is no light at all. It is very dark in the sea. Many fishes have no eyes. Some have big eyes. A few have eyes on one side.

  Besides(除了)the cold and the darkness, deep-sea animals face a third danger-other animals.

  Animals eat! They must find food to eat. Many animals eat plants. However, some animals eat meat. This means these sea animals have two big jobs. They need to find animals as food, and they have to try not to become other animals' meal.

  根据短文选择正确答案

(1) Why do people want to dive in the sea? Because ________.

[  ]

Athey want to catch fish

Bthey want to find the secrets of the undersea world

Cthe sea is deep

(2) In the daytime, when you dive in the sea, you ________.

[  ]

Acan see everything green and blue

Bcan't be in danger

Ccan catch nothing

(3) How many dangers will animals meet in the deep sea?

[  ]

AOne.

BTwo.

CThree.

(4) When you do scuba diving, you can ________.

[  ]

Astay in deep water for a long time

Bdive very, very deep

Clive in deep water easily

(5) Which of the following is WRONG?

[  ]

AAt the depth of 3,000 feet under the sea, all animals can find their way by seeing.

BAt the depth of 3,000 feet under the sea, many animals can find their way by hearing and feeling.

CThe deeper the sea is, the darker and colder it is.

答案:B;A;C;C;A
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When you look up into the sky at night, have you ever felt that your eyes are playing tricks on (捉弄) you? It seems that the stars are moving all the time.

Actually, there is nothing wrong with your eyes. This twinkling effect is called scintillation (交光). Scintillation happens because of air movements in the earth’s atmosphere (大气). Light is “bent (弯曲的)” when it travels through different parts of the earth’s atmosphere. As the air in the earth’s atmosphere is moving all the time, the light from the stars looks as if it is moving too.

The same thing also happens to things on the ground. On a very hot and shiny day, if you look at the road, the image in the distance is not clear and things move slightly. You can also see the same effect if you drop a rock into water. The rock appears a little unclear under the moving water.

This twinkling effect causes a lot of problems for astronomers (天文学家) since they cannot observe the stars clearly. A telescope (望远镜) was sent into space so that the air movements in the atmosphere could be avoided (避免). It took a long time to build the space telescope but finally in 1990, a huge space telescope called the Hubble Space Telescope was successfully sent into space. Since then, astronomers have many important observations that have helped people understand space better.

根据短文内容,选择最佳选项。 (10分)

1.What happens to the light from the stars we see when the air in the earth’s atmosphere is moving?

A.It looks even brighter.

B.It looks as if it is bent.

C.It looks as if it is moving.

D.It looks like drops of rain.

2.Scintillation also happens on      according to the passage.

A.rainy days                             B.shiny days

C.cloudy days                            D.windy days

3.What can you see when you drop a rock into the water?

A.The rock gets broken.

B.The rock becomes unclear.

C.The water becomes much polluted.

D.The water does not move anymore.

4.The underlined word “observe” means “    ”.

A.watch            B.listen             C.draw             D.explain

5.Why is scintillation a problem for astronomers?

A.The stars never stay still.

B.It makes the stars too dark to see.

C.It makes astronomers feel too hot to work.

D.Astronomers cannot observe the stars clearly.

 

  O. Henry, a famous American writer of short stories, was born in North Carolina in 1862. O. Henry was a pen name. His real name was William Sydney Porter. When he was a young boy, he did not go to school for long because of being born in a poor family, but he tried to teach himself everything he needed to know.

   When he was about 20 years old, O. Henry went to Texas. There he tried different jobs. He first worked on a newspaper, and then had a job in a bank. But he got himself into some trouble. Some money went missing from the bank. O. Henry was believed to have stolen it, so he was sent to prison(监狱). During the three years in prison, he learned to write short stories. After he got out of prison, he went to New York and went on writing.

   He wrote mostly about New York and the life of the poor there. People liked his stories, because almost all of them finished with a sudden change. This made the readers surprised.

(   )56. ___________ was the real name of the famous American writer.

    A. O. Henry   B. William Sydney Porter    C. Carolina   D. Texas

(   )57. O. Henry was sent to prison because _________________.

A. people thought he had stolen money from the newspaper.

B. People thought he had stolen money from the bank.

C. he wanted to write stories about prisoners.

D. he broke the law (法律) by not using his own name

(   )58. Which of the following is true?

A. O. Henry was from a rich family

B. O. Henry was in school for a long time.

C. O. Henry learned everything he needed by himself.

D. O. Henry liked writing stories when he was a little boy.

(   ) 59. O. Henry got most materials for his stories from ______________.

A. his happy life as a boy   B. New York and the poor of the city

C. the newspaper         D. his life in prison

(   )60. People enjoyed reading O. Henry’s stories because __________________.

A. they had surprising endings  

B. they were easy to unders

C. they showed love for the poor

D. they were about New York

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