Do you know why different animals or pests(昆虫) have their special colors? Colors in them seem to be used mainly to protect themselves.

　　Some birds like eating locusts(蝗虫), but birds cannot easily catch them. Why? It is because locusts change their colors together with the change of the colors of crops(庄稼). When crops are green, locusts look green. But as the harvest time comes, locusts change to the same brown color as crops have. Some other pests with different colors from plants are easily found and eaten by others. So they have to hide themselves for lives and appear only at night.

　　If you study the animal life, you'll find the main use of coloring is to protect themselves. Bears, lions and other animals move quietly through forests. They cannot be easily seen by hunters(猎人). This is because they have the colors much like the trees.

　　Have you ever noticed an even stranger act? A kind of fish in the sea can send out a kind of very black liquid(液体)when it faces danger. While the liquid spreads over(散开), its enemies(敌人) cannot find it. And it immediately swims away. So it has lived up to now though it is not strong at all.

 (    )46．How can pests with different colors from plants keep out of danger?

　　A. They run away quickly.

　　B. They have the colors much like their enemies.

　　C. They hide themselves by day and appear at night.

　　D. They have to move quietly.

(    )47．Bears and lions can keep safe because______.

　　A. they have the colors much like the trees　　 B. they move quietly

　　C. they like brown and gray colors       　　D. they live in forests

 (    )48．Which is the best title for this passage?

　　A. The Change of Colors for Animals and Pests

　　B. Colors of Different Animals and Pests

　　C. The Main Use of Colors for Animals and Pests

　　D. Some Animals and Pests

阅读短文，根据短文内容判断正误，正确的写A, 错误的写B。

Paul and his wife are driving down a busy street. They stop at a crossing and a car pulls up beside them and it stops too. The driver rolls down his window.

“Excuse me, sir,” he says, “But can you please tell me where the main street is?”

“Sorry, sir,” answers Paul, “But we don’t have Main Street in this city.”

The fellow looks at Paul strangely and then rolls up his window and drives away.

Paul’s wife can’t stop laughing.

“What’s so funny now?” he asks her. She says, “He doesn’t ask you where Main Street is. He wants to know the main street of the city. Every city has a main street, right? Get it?”

“Now I do. But it’s too late.”

1.Paul and his wife meet a driver at a crossing on a busy street.

2.The driver doesn’t know if there is a main street in the city.

3.Paul’s wife can’t stop laughing because her husband doesn’t know the way.

4.There is no main street in this city.

5.Paul understands the driver at last.

阅读短文，根据短文内容判断正误，正确的写A, 错误的写B。
Paul and his wife are driving down a busy street. They stop at a crossing and a car pulls up beside them and it stops too. The driver rolls down his window.
“Excuse me, sir,” he says, “But can you please tell me where the main street is?”
“Sorry, sir,” answers Paul, “But we don’t have Main Street in this city.”
The fellow looks at Paul strangely and then rolls up his window and drives away.
Paul’s wife can’t stop laughing.
“What’s so funny now?” he asks her. She says, “He doesn’t ask you where Main Street is. He wants to know the main street of the city. Every city has a main street, right? Get it?”
“Now I do. But it’s too late.”
【小题1】Paul and his wife meet a driver at a crossing on a busy street.
【小题2】The driver doesn’t know if there is a main street in the city.
【小题3】Paul’s wife can’t stop laughing because her husband doesn’t know the way.
【小题4】There is no main street in this city.
【小题5】Paul understands the driver at last.