第七组：

　　(16)

　　A good memory is a great help in learning a language. Everybody learns his own language by remembering what he hears when he is a small child, and some children -like boys and girls who live abroad with their parents-seem to learn two languages almost as easily as one. In school it is not easy to learn a second language because the pupils have so little time for it, and they are busy with other subjects, too.

　　Our mind is rather like a camera, but it takes photos not only of what we see but of what we feel, hear, smell and taste. When we take a real photo with a camera, there is much to do before the photo is finished and ready to show to our friends. In the same way there is much work to be done before we can keep a picture forever (永远)in our mind.

　　Memory is the diary that we all carry about with us.

　　( )1. We usually begin to learn our own language by _______ it.

　　A. speaking B. hearing C. saying D. teaching

　　( )2. If you have a good ________, you'll have less difficulty in learning something.

　　A. teacher B. camera C. memory D. family

　　( )3. The children who live abroad with their parents can learn two languages more easily because _________.

　　A. they are very clever B. they have good teachers

　　C. they have more chances to use these languages D. they have a better life

　　( )4. _______ can take photos of what can be seen, felt, heard, smelt and tasted.

　　A. A camera B. Memory C. A diary D. A man's mind

　　( )5. Memory is ________ that we keep in our mind and carry about.

　　A. the best diary B. the best camera

　　C. a great help D. a beautiful picture

　　(17)

　　The world is not only hungry, it will also be thirsty for water. About 97% of water on the earth is sea water, or salt water. Man can only drink or use the other 3%of the fresh water (淡水)which comes from rivers, lakes and underground. On the other hand, because the number of people in the world is becoming larger and larger, more and more fresh water is needed. So water shortage becomes a big problem.

　　How can we work out this problem? Scientists have found some ways to turn salt water into fresh water. One important way is to boil (使达到沸点)sea water with high heat until vapor (蒸汽)rises, leaving the salt. In this way, a lot of fresh water can be made quickly.

　　But heating is not the only way to get fresh water. Other ways are tried, for example, digging deep wells, keeping rain water and preventing rivers from being polluted.

　　Which way is the best? To get the most fresh water for the least money is the best.

　　( )6. Where does the fresh water people need come from?

　　A. Sea water. B. Rivers and lakes. C. Underground. D. Both B and C.

　　( )7. From this passage we know fresh water ________.

　　A. only comes from the rain B. can be used in many ways

　　C. can be found in many factories D. is needed by more and more people

　　( )8 The word shortage in this passage means ________.

　　A. being enough B. being short of C. being short for D. being less

　　( ) 9. What is the writer mainly talking about in this passage?

　　A. The ways of getting fresh water.

　　B. How to use fresh water in our daily life.

　　C. All people in the world should save water.

　　D. Different ways of making water in different places.

　　( )10. Which of the following is true?

　　A. Hunger is the only problem in our world.

　　B. Water shortage is the only problem in our world.

　　C. Scientists don't want to spend money solving the water problem.

　　D. Scientists have been working hard and have made much progress in solving water problem.