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.

36. From the passage we learn that locusts________.

A. are small animals                  B. are easily found by birds

C. are dangerous to their enemies    D. change their colors to protect themselves

37. 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.

38. 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

39. Why can the kind of fish live up to now?

A. Because it is very and strong.     

B. Because the liquid it sends out can help it escape from its enemies.

C. Because the liquid it sends out can kill its enemies.

D. Because it swims faster than any other fish.

40. 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

Dealing with School Pressure

Get organized.By becoming more organized, you can reduce your stress level drastically(彻底地)Make a daily schedule of all your activities.Another way to become more organized is by getting your supplies and desk in order.Label folders(文件夹) for each class and arrange your notes and assignment by topic or date so you can easily find information.

Don't procrastinate.Putting off doing your schoolwork will only make you more stressed.If you get an assignment that is due in a month, and you don't have any other assignment to finish, go ahead and begin working on it.

Exercise.Performing some sort of physical activity for thirty minutes three times a week will considerably lower your stress level.Taking the time to exercise will help get your mind off the chaos and stress in your life.

Get plenty of sleep and eat healthily.You need between seven to eight hours of sleep per night in order to rest your mind and body so they can perform well during the day.Eating well-balanced meals will provide your with enough energy to accomplish your daily activities.

Adopt a positive attitude.If you are always negative, then stress will overwhelm you.By looking at things in a positive light, you will not only reduce your stress, but you will also feel better about yourself.

Realize that it's okay to say "no".If you already have a full schedule, don't attempt to add anything else to it.If your friends want you to go out at the last minute but doing so would conflict with your schedule, don't feel bad about turning them down.They will understand.They have been stressed before too.

1.According to the tips, your life will be   if you study without a proper schedule.

A.organized

B.in disorder

C.free

D.busy

2.Which is NOT TRUE according to the tips?

A.The more you sleep, the less stressed you will feel.

B.A balanced diet will make you energetic.

C.Regular exercise will help you feel relaxed.

D.Everything in a mess will increase one's stress.

3.What does the underlined word " procrastinate" mean?

A.ahead of time.

B.delay.

C.give up.

D.make up.

4.If your good friend invites you to do something while you are busy.what should you do so as not to increase stress?

A.You should accept the invitation.

B.You had better say "no".

C.You should keep silent.

D.You should feel bad.

 

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