The sun is a huge, hot, bright star. It is important because without it there would be no life on earth. The sun gives us light and heat.

    All living things need light and heat from the sun to live. Plants need light and heat to grow. They use the light from the sun to make food. We can’t make our own food, but plants can. All the food we eat comes from plants in a food chain (链) which stars with the sun. For example,

    Animals need sunlight, too. Just like us, their food come from a food chain which begins with the sun and the plants.

    sun →leaf →caterpillar(毛虫) →bird

    sun →seaweed (海藻) →small fish → whale (鲸)

    Sunlight means we can see during the day. If there was no sun, it would be dark all the time. Even when the sky is cloudy, the sunlight is very strong and it shines through (穿越) the clouds.

   1. Which words tell us what the sun is like?

       A. Huge        B. Hot        C. Bright          D. All of the above

   2. What are two main things the sun gives us?

       A. Light and heat    B. Heat and eggs  C. Corn and light  D. Wheat and bread

   3. Why can we still see during the day when the sky is cloudy?

       A. Because we can see all day and all night.

       B. Because the sun can’t give us light all day long.

       C. Because the sunlight can shine through the clouds.

       D. Because we can’t see at night.

   4. All the food we eat comes from _______. And it starts with the _________.

       A. plants, earth    B. a food chain, sun     C. food, sun    D. plants, star

   5. In what way do you think the sun cannot be harmful (有害的)?

       A. The sun can do harm to your eyes.       B. It can make rivers too dry.

       C. Without it there would be no life on earth.

       D. Hot sun on dry land can cause (引起) fires.


完形填空
     通读下面短文,掌握其大意,然后在各题所给的四个选项(A、B、C和D)中选出一个最佳选项。
    Gilbert joined the Science Club last summer. One day he was handed a piece of paper, a block of wood and four wheels; he was told to go home and   1    them all to "dad". However, Gilbert's mom knew that his dad wasn't good at making things and decided that she would read the     2     and let Gilbert do the work. A few days later the block of wood was turning into a car that Gilbert   3   named "Blue Lightning". Then he and his mother went to a car race together. But when they    4   there, Gilbert found that his car was the only one that had not been made by a "father-son" partnership (合作).
    The race began. One by one the cars were knocked out until it    5   to the final between Gilbert and Jimmy. Just before the race, Gilbert asked    6    they could stop for a minute    3    he could make a wish. After a long minute, Gilbert said that he was    8   .

People cheered as the race began. Jimmy stood with his father and    9   their car racing down the road while Gilbert was surprised at the great    10    of his car as it rushed over the finishing line less than a second    11   Jimmy's. Gilbert jumped up and down with    12   .
    Soon the club manager came over and asked him, "So, Gilbert, your wish was to     13     , right?" "Oh no, sir," he replied. "I just wished that I wouldn't cry if I lost."
  Children sometimes    14   adults with unexpected ideas. When Gilbert first saw the other cars, he didn't cry out, "Not fair! Other children had their fathers' help!" Gilbert didn't wish for victory in the race;    15    he wished for courage.
1. A. send        B. return      C. lend         D. give
2. A. instructions  B. passage     C. message     D. explanations
3. A. easily        B. carefully     C. proudly     D. kindly
4. A. lived         B. got         C. met         D. passed
5. A. ran           B. moved     C. came        D. rushed
6. A. whether       B. why        C. when       D. where
7. A. now that      B. as if         C. so that     D. even though
8. A. sure          B. ready        C. tired       D. sorry
9.A. watched       B. saw          C. noticed     D. looked
10. A. effort        B. energy        C. speed      D. value
11. A. past         B. over          C. after       D. before
12. A. excitement    B. enjoyment    C. agreement  D. achievement
13. A. change       B. break         C. leave      D. win
14. A. satisfy       B. surprise       C. please       D. encourage
15. A. Usually       B. Besides        C. Instead      D. So

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