Do you know why different animals or insects have their special colors? Colors are used mainly to protect themselves.

Why can’t some birds easily catch locusts（蝗虫）? It is because locusts change their colors together with the change of the colors of crops. When crops are green, locusts look green. But as autumn comes, locusts change to the same brown color as crops have. Some other insects with different colors from plants are easily found and eaten by others. So they have to hide themselves for lives in the day 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 can’t be easily seen by hunters. This is because they have the colors much like the trees.

Have you ever noticed an even more strange thing? A kind of fish in the sea can send out black liquid when it faces danger. While the liquid spreads over, its enemies can’t find it. And it quickly swims away. So it has lived up to now though it is not strong at all.

1. From the article we learn that locusts 　　　　　　　　　.

A. are dangerous to their enemies           B. are easily found by birds

C. change their colors to protect themselves   D. are small animals

2.How can insects with different colors from plants keep out of danger?

A. They have to move quietly.

B. They hide themselves in the day and appear at night.

C. They have the colors much like their enemies.

D. They run away quickly.

3. Bears and lions can keep safe because 　　　　　　　　　.

A. they live in forests                  B. they like brown and grey colors

C. they move quietly　                   D. they have the colors similar to the trees

4.What does the word “liquid” mean in the last paragraph?

A. 气体          B. 固体　       C. 液体　       D. 水蒸气

5. Which is the best title for this passage?

A. The Main Use of Colors for Animals and Insects

B. Colors of Different Animals and Insects

C. The Change of Colors for Animals and Insects

D. The Change of Different Animals and Plants

Do you know why different animals or insects have their special colors? Colors are used mainly to protect themselves.

Why can’t some birds easily catch locusts（蝗虫）? It is because locusts change their colors together with the change of the colors of crops. When crops are green, locusts look green. But as autumn comes, locusts change to the same brown color as crops have. Some other insects with different colors from plants are easily found and eaten by others. So they have to hide themselves for lives in the day 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 can’t be easily seen by hunters. This is because they have the colors much like the trees.

Have you ever noticed an even more strange thing? A kind of fish in the sea can send out black liquid when it faces danger. While the liquid spreads over, its enemies can’t find it. And it quickly swims away. So it has lived up to now though it is not strong at all.

1. From the article we learn that locusts 　　　　　　　　　.

A. are dangerous to their enemies           B. are easily found by birds

C. change their colors to protect themselves   D. are small animals

2.How can insects with different colors from plants keep out of danger?

A. They have to move quietly.

B. They hide themselves in the day and appear at night.

C. They have the colors much like their enemies.

D. They run away quickly.

3. Bears and lions can keep safe because 　　　　　　　　　.

A. they live in forests                  B. they like brown and grey colors

C. they move quietly　                   D. they have the colors similar to the trees

4.What does the word “liquid” mean in the last paragraph?

A. 气体          B. 固体　       C. 液体　       D. 水蒸气

5. Which is the best title for this passage?

A. The Main Use of Colors for Animals and Insects

B. Colors of Different Animals and Insects

C. The Change of Colors for Animals and Insects

D. The Change of Different Animals and Plants

　　A passenger (乘客) watched a man coming toward him with two big heavy bags. As the man came near, the passenger asked if he had the time.

　　“Certainly”, the man answered, then he pushed a button on his watch and a voice rang out, “Eight fifteen”. Then he pushed another button on his watch, and a tiny TV screen appeared (出现) with morning news. Another button produced music.

　　“I'll have the watch”, said the passenger, “I'll give you 500 dollars for it.” The man agreed and handed over the watch. Just then a voice came from the speaker on the wall. “The train for London is arriving. Please go through Gate 4.” As the passenger started to leave, the man called after him, “Don't you want extra batteries (额外电池) ?”

　　“Sure. Where are they?”

　　“In the bags. I'm going to London, too.”

(1) The story happened ________.

[　　]

A．on a train

B．at an airport (机场)

C．in a hotel (旅馆)

D．in a railway station waiting-room

(2) By asking “if he had the time”, the passenger wanted to know if the man ________.

[　　]

A．had spare (多余的) time

B．was free

C．could tell him the time

D．had a watch

(3) The two bags the man carrying were ________.

[　　]

A．heavy

B．full of watches

C．expensive

D．full of something stolen

(4) The last sentence shows ________.

[　　]

A．the man was going to London

B．the man wanted the passenger to help him with the bags

C．the man needed money for the ticket

D．the man wanted to make more money

(5) Which of the following is true?

[　　]

A．The man bought a watch from the passenger.

B．The passenger bought a watch from the man.

C．The man stole a watch.

D．The passenger stole a watch.