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 what the White House is? Perhaps some of you do，while others don't.

　The White House is a house in Washington. The president of the U.S.A. lives in it. It's really white. But do you know why the White House is white? The story happened in 1812. That year England was at war with America. The British army got to Washington and set the president's house on fire. In 1814，in order to hide the marks of the fire，the stone walls of the president's house were painted white and it has been the “White House”ever since.

1. White House is a house for ___________.

　　  A. the American people.　　  B. the soldiers of U.S.A.   C. the presidents of U.S.A.　 

2.England fought with America in ____________.

　　  A. 1810　　　　　　       B. 1812　　　 C. 1814　　　  　　 

3. The house is called “White House” because ____________.

　　  A. it's covered with snow      B. the house is very clean

 C. the stone walls of the house were painted white

4.The White House was painted white because ____________.

　　  A. the house is old　　  B. the house is new  C. it was once on fire and was with marks

5. “ever since” means ___________.

　　  A. never　　               B. once　　   C. from then on　　

The woman couldn’t see her son____.She was worried.

　　 A. somewhere B. everywhere    C. anywhere    D.where

 Sandy: How was your vacation in America?  Linda: It couldn’t be worse!

  I don’t 　　　 want to talk about it!

 (A) even (B) least   (C) never  (D) then

Don’t ______ your jeans to the school party.

　　A. put on    　B. dress      　　 C. wearing      D. wear