In nature, you may see many insects (昆虫）and animals of different colors. Have you ever wondered why?

   Locusts are super delicious food for birds,but it is not always an easy job for birds to catch them.It is neither because locusts are good jumpers or runners nor because they are smarter than their enemies. The reason is that the colors of locusts change with the colors of crops(庄稼). When crops are young,locusts look green. But when autumn comes, locusts change to the yellow and brown color as crops do.

   Brown bears,tigers and other animals move quietly through forests. They can’t be seen easily by their enemies. This is because they have colors similar to the trees. For the same reason, polar bears that live on a land of snow and ice are white. Butterflies and bees living among the flowers are colorful like flowers. Soil insects are mostly dark-colored and they live under the soil(土壤） in a dark and wet environment. However, insects with colors different from plants can easily be found and eaten by others. So in order to survive,they have to hide themselves in the daytime and appear only at night.

   Have you ever noticed some even stranger acts? The ink fish in the sea can send out some very black ink when it faces danger. As the ink spreads over , its enemies will find themselves suddenly in a dark world. At the same time the ink fish immediately swims away. That is how it keeps itself safe though it is not strong at all.

1.It is not easy for birds to catch locusts because____________.

A .locusts are good runners                B. locusts can jump very high

C. locusts are smarter than birds            D. locusts can change their color

2.According to the passage, most soil insects_________

A.do not have bright colors

B. change their colors with the soil

C. do not live in a dark and wet environment

D. Eat colorful insects like butterflies and bees

3.What’s the meaning of the underlined word”survive” in the passage?

A. 繁殖            B. 产卵              C. 觅食               D. 生存

4.The ink fish_______so that its enemies will not see it?

A. changes its color                   B. makes the water around it black

C. appears only at night               D. hides itself in the sea rocks

5.What is the main idea of this passage?

A. Some insects and animals have different skills.

B. Some insects and animals are clever than we think.

C. Some insects and animals use colors to protect themselves.

D. Some insects and animals can get used to the environment easily.

 

1.My father ________(居住) happily with my small family.

2.As a teacher, he must be _________(友好的) to all his students.

3.I hope ________(每个人) will achieve(实现) their dreams in the future!

4.When autumn comes, the ________(叶子) on the trees turn yellow.

5.Don’t go to play soccer! It’s ________(下雪) outside now.

 

根据句意，用括号中所给单词的正确形式填空。

1.The boy is very rude so he is _________ (popular) with his classmates.

2.The brave boy was in hospital and many ________ (visit) came to see him.

3.The father makes his son ________ (clean) his own bedroom every day.

4.When autumn comes, ________ (leaf) begin to fall off the tree.

5.It’s raining very hard so I decide _________ (not go) out.

6.It’s necessary for us _________ (keep) the classroom clean.

7.There was a lot of traffic on the way, but ________ (lucky), we didn’t miss the film.

8. Yesterday morning, Zhang Ming was late for class because of ________ (get) up late.

 

完成句子 （共5个小题，每小题1分，满分5分）
根据括号内的汉语提示，完成句子。（每空一次）
1.My father ________(居住) happily with my small family.
2.As a teacher, he must be _________(友好的) to all his students.
3.I hope ________(每个人) will achieve(实现) their dreams in the future!
4.When autumn comes, the ________(叶子) on the trees turn yellow.
5. Don’t go to play soccer! It’s ________(下雪) outside now.

完成句子 （共5个小题，每小题1分，满分5分）

根据括号内的汉语提示，完成句子。（每空一次）

1.My father ________(居住) happily with my small family.

2.As a teacher, he must be _________(友好的) to all his students.

3.I hope ________(每个人) will achieve(实现) their dreams in the future!

4.When autumn comes, the ________(叶子) on the trees turn yellow.

5. Don’t go to play soccer! It’s ________(下雪) outside now.