When the weather is hot, you go to a lake or an ocean. When you are nears lake or an ocean, you feel cool. Why? The sun makes the ear& hot, but it cannot make the water very hot. Although the air over the earth becomes hot, the air over the water keeps cool. The hot air over the earth goes up. Then the cool air over the water moves in and takes the place of the hot air. When you are near a lake or an ocean, you feel the cool air. When it moves in, you feel the wind. And the wind makes you cool. Of course, scientists cannot answer all of our questions, ff you ask, "Why is the ocean full of salt?", scientists will say that the salt comes from rocks. When a rock gets very hot or very cold, it cracks (裂开). Rain falls into the cracks .The rain then carries the salt into the earth and into the rivers. The rivers carry the salt into the ocean. But then we ask, "What happens to the salt in the ocean?" The ocean does not get more salty every year. Scientists are not sure about the answer to the question. We know a lot　about our world. But there are still many answers that we don't have, and we are curious(好奇的).

1. Now scientists know_______

A. what makes people feel cool near a lake or an ocean in summer

B. everything about the ocean

C. why the ocean doesn't get more salty

D. what happens to the salt in the ocean

2. In this passage the word "cracks" means _______in Chinese.

A. 山谷       B.裂缝       C. 地壳     D. 岩浆

3. Which of the following is not true?

  A. The sun makes the earth hot.

  B. The sun cannot make the water very hot.

  C. The wind makes you tout.

  D. The hot air over the water moves in and takes the place of the cold air

4. People are always curious about the world because______

A. they know nothing about it      

B. they know little about it

C. there are many answers they do not have     

D. both. A and B

5. The main idea of this passage is that ______

A. the salt in the ocean comes from rocks

B. scientists can explain (解释) everything we want to know

C. people feel cool when they are near a lake or an ocean

D. scientists can explain many things, but not everything

完形填空

　　In much of China, spring is usually very short. It usually comes in February or March. Summer is often very ___(1)___ .It ___(2)___ from May to July. The hottest month is July. Autumn starts in August and goes on ___(3)___ October. The weather can be quite warm in ___(4)___. Winter lasts from November to January, and is very cold. You need to wear lots of ___(5)___ clothes. The best time to come to China is in ___(6)___ because in summer it is often too hot, and in winter it is too cold.

　　The seasons of the year in England are unlike much of China and the USA. The weather in England ___(7)___gets too hot, or too cold. So you can see green grass all the year. In England spring is longer. It can last from late March to May.

　　The Australian seasons are the opposite. ___(8)___ is from December to February, and winter is in June, July and August. So when it's spring in China, it is autumn in ___(9)___. So Australians never have White Christmas because their Christmas is in ___(10)___.

(1)

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(2)

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(3)

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(4)

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(5)

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(6)

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(7)

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(9)

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(10)

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完形填空

　　In much of China, spring is usually very short. It usually comes in February or March. Summer is often very ___(1)___ .It ___(2)___ from May to July. The hottest month is July. Autumn starts in August and goes on ___(3)___ October. The weather can be quite warm in ___(4)___. Winter lasts from November to January, and is very cold. You need to wear lots of ___(5)___ clothes. The best time to come to China is in ___(6)___ because in summer it is often too hot, and in winter it is too cold.

　　The seasons of the year in England are unlike much of China and the USA. The weather in England ___(7)___gets too hot, or too cold. So you can see green grass all the year. In England spring is longer. It can last from late March to May.

　　The Australian seasons are the opposite. ___(8)___ is from December to February, and winter is in June, July and August. So when it's spring in China, it is autumn in ___(9)___. So Australians never have White Christmas because their Christmas is in ___(10)___.

(1)

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(2)

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(3)

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(4)

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(5)

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(6)

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(7)

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(8)

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(9)

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(10)

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阅读理解

　　When the weather is hot, you go to a lake or an ocean. When you are near a lake or an ocean, you feel cold. Why? The sun makes the earth hot but it can not make the water very hot. Although the air over the earth becomes hot, the air over the water stays cool. The hot air over the earth goes up. Then the cool air over the water moves in and takes the place of the hot air. When it moves in, you feel the wind. And the wind makes you cool.

　　Of course, scientists can not answer all of our questions. If we ask, “Why is the ocean full of salt?” Scientists will say that the salt comes from rocks. When a rock gets very hot or very cold, it cracks(断裂). Rain falls into the cracks. The rain then carries salt into the ocean. But then we ask, “What happens to the salt in the ocean?” The ocean does not get more salty every year. Scientists are not sure about the answer to this question.

　　We know a lot about our world. But there are still many answers that we do not have, and we are curious.

1．The main idea of this passage is that ________.

[　　]

A．people feel cool when they are near a lake or an ocean

B．scientists, can explain many things, but not everything

C．scientists can explain everything about the ocean

D．the salt in the ocean comes from rocks

2．Now scientists know ________.

[　　]

A．what makes people feel cool near a lake or an ocean in summer

B．everything about the ocean

C．what happens to the salt in the ocean

D．why the ocean does not get more and more salty

3．A rock cracks when ________.

[　　]

4．People are always curious because ________.

[　　]

A．they know nothing about the world

B．they know not a little knowledge about the world

C．there are many answers they don't agree

D．there are many things they don't know

5．Which of the following reasons is NOT mentioned(提到) in this passage?

[　　]

A．Why do people feel cool when they are near a lake or an ocean in hot weather.

B．Why doesn't the ocean get more salty every year?

C．Why is the ocean water salty?

D．Why do rocks crack?