Napoga Gurigo，a 12-year-old girl，lives in a village in Ghana. It is1for her family to get clean drinking water. The nearest place to get water is a muddy (混浊的) water hole half a kilometer away from her2. Animals and villagers use it alike. Each morning, Napoga leaves home at half past five to collect water for her family. Sometimes it 3a few hours to get enough water. Napoga has no time to go to school for learning. In the neighboring areas, many boys and girls 4Napoga. They can't keep strong and5just because they have not enough drinking water.
In fact, 70% of Earth's surface is water. But most of6is sea water. We can't use salty water in our daily life. Fresh water is what we7 drink, take showers and cook food. And fresh water covers only 1 percent of Earth's surface. In some areas people try to make deep wells (水井) to get water from8. But there still9enough for farming. Scientists say that1030 years, more people in the world will face all kinds of water problems than now. So we must do something to take care of our water resources (资源).

1. 1.
   1. A.
      easy
   2. B.
      hard
   3. C.
      fun
   4. D.
      impossible
2. 2.
   1. A.
      school
   2. B.
      city
   3. C.
      country
   4. D.
      home
3. 3.
   1. A.
      spends
   2. B.
      costs
   3. C.
      pays
   4. D.
      takes
4. 4.
   1. A.
      look like
   2. B.
      are like
   3. C.
      feel like
   4. D.
      sound like
5. 5.
   1. A.
      healthy
   2. B.
      strong
   3. C.
      heavy
   4. D.
      clean
6. 6.
   1. A.
      them
   2. B.
      those
   3. C.
      that
   4. D.
      these
7. 7.
   1. A.
      used to
   2. B.
      are used to
   3. C.
      use to
   4. D.
      are used
8. 8.
   1. A.
      underground
   2. B.
      subway
   3. C.
      rivers
   4. D.
      the sea
9. 9.
   1. A.
      haven't
   2. B.
      isn't
   3. C.
      aren't
   4. D.
      hasn't
10. 10.
    1. A.
       in
    2. B.
       after
    3. C.
       before
    4. D.
       for

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