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

Some birds like eating insects, but birds cannot easily catch insects. Why? It is because insects change their colors together with the change of the colors of crops. When crops are green, insects look green. But as the harvest time comes, insects 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 and appear only at night.

If you study the animal life, you’ll find the main use of colors is protecting them. Bears, lions and other animals move quietly through forests. They cannot be seen by hunters. This is because they have the colors much like the trees.

Have you ever noticed an even strange animal? 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, the fish itself cannot be found. And it quickly swims away. So it has lived up to now though it isn’t strong at all.

1.Why do some animals have different colors? (不超过 10 个词)

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2.When the harvest time comes, which color do some insects change to? (不超过 10 个词)

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3.What can the fish do in the last paragraph when it faces danger? (不超过 15 个词)

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Once upon a time, there was a garden. Many vegetables grew in the garden. And there was a big_________near the vegetables.

The vegetables and the big tree didn't like each other. The vegetables drank a lot of water, so the tree_______drink enough water. The big tree looked at the vegetables_______and he decided to teach them a lesson.

On a summer day, the_______was shining in the sky. The big tree decided not to share its shade(树荫)with the vegetables. It made the vegetables very hot. There was not_______water to drink, and they soon became very dry and ugly. At that time, the gardener came to see these vegetables. He was very sad,_______almost all the vegetables were dry. Then he decided to build a new garden.

It_______the gardener too much time to build the new garden. He was so busy that he couldn’t_______the old garden. Both the big tree and the vegetables felt very thirsty. They would die soon. In the end, the big tree_______what he had done. If the big tree realized that it was better to communicate well with the vegetables at first, they might both grow very well. However, he chose a________way to teach the vegetables a lesson.

1.A.tree B.flower C.river D.mountain

2.A.couldn't B.shouldn't C.mustn't D.needn't

3.A.happily B.angrily C.amazingly D.kindly

4.A.star B.moon C.earth D.sun

5.A.many B.little C.enough D.few

6.A.so B.however C.although D.because

7.A.took B.spent C.paid D.cost

8.A.look up B.look after C.look through D.look over

9.A.regretted B.thanked C.understood D.agreed

10.A.clever B.right C.wrong D.proper

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