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

　　Some birds like eating locusts(蝗蟲), but birds cannot easily catch them. Why? It is because locusts change their colors together with the change of the colors of crops(莊稼). 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(獵人). 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(液體)when it faces danger. While the liquid spreads over(散開), its enemies(敵人) cannot find it. And it immediately swims away. So it has lived up to now though it is not strong at all.

 (    )46．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.

(    )47．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

 (    )48．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

    Different colours usually stand for different feelings．Red，for example，is the colour of fire，heat，blood and life．People say red is an exciting and active colour．They associate red with a strong feeling like anger．Red is used for signs of  36  ，such as STOP signs and fire engines．

Orange is the bright，warm colour of leaves in autumn．People say orange is a  37  colour．They associate orange with happiness．Yellow is the colour of  38  ．People say it is a cheerful colour．They associate yellow with happiness，too．Green is the cool colour of grass in spring．

People say it is a refreshing colour．In general，people  39  two groups of colours：warm colours and cool colours．The warm colours are red，orange and  40 ．Where there are warm colours and a lot of light，people usually want to be  41  ．Those who like to be with  42  like red．The cool colours are black and blue．Where there are these colours，people are usually worried．Some scientists say that time seems to  43  more slowly in a room with warm colours．They suggest that a warm colour is a good way for a living room or a  44  ．

    People who are having a rest or are eating do not want time to pass quickly．  45  colours are better for some offices if the people working there want time to pass quickly．

(    )36．A．roads            B．ways         C．danger            D．places

(    )37．A．lively            B．dark          C．noisy              D．frightening

(    )38．A．moonlight        B．light          C．sunlight           D．stars

(    )39．A．speak            B．say           C．talk about          D．tell

(    )40．A．green            B．yellow        C．white              D．gray

(    )41．A．calm             B．sleepy        C．active              D．helpful

(    )42．A．the other         B．another       C．other one           D．others

(    )43．A．go round         B．go by        C．go off              D．go along

(    )44．A．factory          B．classroom     C．restaurant           D．hospital

(    )45．A．Different         B．Cool         C．Warm              D．All

--Make sure that your friend will come here on time.　

--________.

A. Certainly, I will　　　　 　　　　　　　　　　　　　 B. Don’t worry , Mum　

C. That’s OK　　　　　　 　　　　　　　　　　　　　 D. Of course I can

　Although he got up early, _______ he missed the train.

A. but　 　　　　　　　 B./ C. and　　　　 　　　 D. or

 I would rather_________ than________ with him．

A．laugh at，quarrel                          B．to laugh at，to quarrel

C．be laughed at，quarrel                     D．to be laughed at，to be quarreled

 Is there any________ left in your car? Can I get into it?

A．area               B．room               C．rooms              D．places

A：Who called the telephone yesterday evening?　　

B：________．

A．None　　　　　　 B．Nothing　　 　　　　　 C．Anyone　　　　 　 D．No one

 I don’t know when Kitty________ tomorrow，and please give this message to her when she________．

A．comes，will come                        B．comes，comes

C．will come，will come                      D．will come，comes

  He ______ to lead us the way, which surprised us a lot.

A. reminded                 B. offered                     C. provided                   D. asked

 I’m_________ tired because I have had a good rest．

A．a little             B．a bit                C．not a little           D．not a bit