The earth is our home. We must take care of it. Life today is easier than it was        years ago, but it has brought some new problems. One of the biggest problems is pollution（污染）. We can see it, smell it, drink it and even       it. Man has polluted the        . The more people, the more pollution.Many years ago, the problem was not so serious because there were not so       people. When the land was used up (用光), the river was not clean in a place,man went to       place. Now man is slowly polluting the whole world       pollution is still the most serious, it’s bad for       things in the world.Many countries don’t le t people burn       for air in houses and factories in the city. Pollution by SO2 is now the most dangerous kind of       pollution. It’s caused by heavy traffic. People say it’s       to ride bikes. When you are       , there is no pollution. But even in developed countries, most people don’t go to work by bike. It’s not      bikes are expen sive or people are tired if they ride to work. It’s because the number of cars on the roads becomes larger. So more people       their bikes and go to work by cars,  then things are getting       . We should have special roads only for bikes and make it       difficult and expensive for drivers to take their cars into the city that they will go back to use their bikes. 

1.A. hundred       B. hundreds of      C. hundred of      D. hundreds 

2.A. listen         B. listen to         C. hear of        D. hear 

3.A. moon          B. star               C. earth             D. sun 

4.A. lot            B. little             C. many             D. much  

5.A. others        B. the others       C. the other        D. another  

6.A. Air           B. Food              C. Water            D. Noise  

7.A. life           B. live              C. living            D. lives 

8.A. something bad              B. bad something  

C. something good              D. good something 

9.A. water           B. air             C. noise          D. white 

10.A. least           B. best            C. most             D. worst 

11.A. driving       B. biked           C. riding           D. ridden 

12.A. why             B. because          C. what              D. how 

13.A. put on          B. look at         C. put away        D. look up 

14.A. better and better              B. more and more  

C. worse and worse                     D. bigger and bigger 

15.A. quite            B. such              C. very               D. so

Animals, including insects, don’t have a ‘language’ like ours. They do not ‘talk’ to each other in words and sentences. But if we watch them, we can see that they do have their ways of communicating (交流) with each other.

Can you see the rabbit’s tail? When rabbits see this white tail moving up and down, they run away. They know that they are in danger. The rabbit has told them something without making a sound. It has given them a signal.

Many other animals use this kind of ‘language’. When a cobra（眼镜蛇）is angry, it raises its head and makes itself look powerful（有力的）. This warns other animals. When a bee（蜜蜂）has found food, it goes back to its home. It cannot ‘tell’ the other bees where the food is by speaking to them, but it does a little dance. This tells the bees where the food is.

Some animals ‘say’ things by making sounds. A dog barks, for example, when a stranger comes near. A cat purrs when it is pleased. Some birds make several different sounds, each with its own meaning. Sometimes we human beings speak in the same way. We make sounds like “Oh” or “Ah” when we are frightened or pleased or when we drop something on our toes.

1.Which one is TRUE according to the passage?

A．Animals have languages like human beings.

B．Bees communicate with each other by dancing.

C．Animals can use words.                                                 D．Animals are brave.

2.A rabbit uses its tail to ___________.

A．warn other rabbits when they are in danger   B．tell other rabbits where food is

C．make itself look powerful                 D．help it to run fast

3.When a cobra is angry, it __________.

A．makes a loud noise                      B．raises its head

C．moves up and down                     D．does a little dance

4.Several different sounds can be made by a __________.

A．rabbit            B．bee              C．bird              D．fish

5.From the passage, we know that ________ use words and sentences to express ideas and thoughts.

A．all living things      B．all animals         C．some birds        D．human beings

What house do you want ________?

1. A.
   living
2. B.
   living in
3. C.
   to live
4. D.
   to live in

At London College, the boys can go to the city in the afternoon. But they must return to the school before six. And Bob doesn’t often obey the rule. One afternoon, Bob walked to the city and went to the cinema. When he got to the school, it was eight o’clock. He was a little worried. He ran quickly to the gate. It was closed. He went round the school building to another door. That one was closed, too. Then he saw an open window on the ground floor. It was the head teacher’s office. Bob looked into the room, and no one was there. He quickly climbed up and jumped into the room. Just then he heard a voice. He looked around and hid(藏)under the sofa. One minute later, Mr. Scott, the head teacher, came in. He turned on the light(灯) and sat down on the sofa. Then he began to read. Bob lay under the sofa and looked at the head teacher’s feet for an hour. He could not move. At last the head teacher stood up and walked towards the door. “Thank goodness, he didn’t find me under the sofa.” thought Bob. Then the head teacher stopped. He turned his head and spoke to the sofa, “Would you mind turning off the light when you leave?” he said and left the office.

1. Bob got to the school ___________.

A. at eight o’clock in the morning             B. after the given time

C. before the given time                     D. on time

2.Bob went into the head teacher’s___________.

A. office             B. bedroom          C. dining room       D. living room

3.Bob _________ the sofa.

A. lay under          B. lay on             C. sat on            D. sat under

4.Bob could see Mr. Scott’s__________.

A. hand             B. bag                C. feet             D. books

5.Mr.Scott knew that_________________.

A. Bob went to the cinema                   B. Bob was in the classroom

C. Bob returned to the school                 D. Bob was under the sofa

Which of these sentences is correct ?

A. She wondered what’s wrong with her dog.

B. I am not sure what does he do for a living. 

C. Nobody knows how he repaired his broken bike this morning.               

D. He asked if that it would rain the following day.