阅读理解。阅读下列短文，从每题所给的选项中，选出最佳答案。

　　It is no surprise to find seashells on the beach. Most seashells are found near the sea. But some seashells have been found on high mountain tops. That is a funny place for seashells. How did they get there?

　　The earth did not always look the way it does today. Once the sea covered more of the land. Then mountains pushed up. They pushed up through the water. Land from the bottom of the sea became mountain tops. Seashells and fish bones were pushed up, too. They were now far away from sea water. They were left high and dry.

　　The seashells and fish bones were covered with soft mud and sand. The mud became hard. It turned to stone. The shapes of the shells and bones were pressed into the stones. These stones are called fossils.

　　Fossils have been found all over our country. Have you ever found one?

1．Some seashells have been found ________.

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2．The story says, “The earth did not always look the way it does today. ” The word “it” means ________.

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3．Which of the following does this story tell you?

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A．Fish used to live in trees.

B．Fossils can be found far away from the sea.

C．Seashells were turned into fish bones.

D．Fossils can be found only near the sea.

4．What happened to seashells and fish bones?

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A．They were left on the top of the water.

B．They were left under the water.

C．Seashells and fish bones were washed away by the water.

D．Seashells and fish bones were pushed up, too.

5．What is the main idea of the story?

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A．Seashells are funny.

B．Mountaintops are funny places for seashells.

C．The earth has changed a lot since long long ago.

D．The earth had changed.

　　阅读理解。阅读下列短文，从每题所给的选项中，选出最佳答案。

　　It is no surprise to find seashells on the beach. Most seashells are found near the sea. But some seashells have been found on high mountain tops. That is a funny place for seashells. How did they get there?

　　The earth did not always look the way it does today. Once the sea covered more of the land. Then mountains pushed up. They pushed up through the water. Land from the bottom of the sea became mountain tops. Seashells and fish bones were pushed up, too. They were now far away from sea water. They were left high and dry.

　　The seashells and fish bones were covered with soft mud and sand. The mud became hard. It turned to stone. The shapes of the shells and bones were pressed into the stones. These stones are called fossils.

　　Fossils have been found all over our country. Have you ever found one?

(1)Some seashells have been found ________.

[　　]

(2)The story says, “The earth did not always look the way it does today. ” The word “it” means ________.

[　　]

(3)Which of the following does this story tell you?

[　　]

A．Fish used to live in trees.

B．Fossils can be found far away from the sea.

C．Seashells were turned into fish bones.

D．Fossils can be found only near the sea.

(4)What happened to seashells and fish bones?

[　　]

A．They were left on the top of the water.

B．They were left under the water.

C．Seashells and fish bones were washed away by the water.

D．Seashells and fish bones were pushed up, too.

(5)What is the main idea of the story?

[　　]

A．Seashells are funny.

B．Mountaintops are funny places for seashells.

C．The earth has changed a lot since long long ago.

D．The earth had changed.

完形填空

阅读下面短文，掌握其大意，然后从1－20各题所给的四个选项(A、B、C和D)中选出最佳选项。

　　Nowadays, satellites are helping to forecast(预报) the weather. They are in space, and they can reach any 1 of the world. The satellites 2 pictures of the atmosphere, because this is 3 the weather forms. They send these pictures to the weather stations, 4 meteorologists(气象学家) can see the 5 of any part of the world. From the pictures, the scientists can 6 say how the weather will change. 7 , nearly five hundred weather stations in sixty counties receive satellite pictures. 8 they receive new pictures, the meteorologists compare them with the 9 ones. Perhaps they may find that the clouds 10 during the last few hours. This may 11 that the weather on 12 may soon change, too. In their 13 weather forecast, the meteorologists can say this. The weather satellites 14 for other work. So satellites are a great 15 to the meteorologists. Before satellites were 16 , the scientists could forecast the weather 17 about 24 or 48 hours. Now they can 18 good forecasts for three or five days. 19 , perhaps, they may be able to forecast the weather for a week or more 20 .

　　It is no doubt that satellites can be used in many other fields in science now.

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