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    No . 100 Don’t go out school nights.(在) 【查看更多】

     

    题目列表(包括答案和解析)

    –Have you ever been Canada?

        --__________.But I hope to go there one day!

    　A. Yes, I have　  B. Yes, I haven't　     C. No, I have　     D. No, I haven't

     

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    Every object has weight. But the center of its weight is not always in the middle of the object. If the top of an object is heavier than its bottom, it will fall over easily. We say that its center of gravity is high. But if the bottom is heavier, it won’t fall easily. Then we say that its center of gravity is low.

    Look at the first picture. This empty box must fall over, because its center of gravity (C) is not above the line of its bottom (AB).

    Now look at the second picture. There is some heavy iron in the bottom of this box. It will not fall, because its center of gravity is above its bottom.

    1.If the bottom of an object is ______ its top, it will fall over easily.

    A. lighter than　　 B. heavier than　　 C. no heavier than　　  D. as heavy as

    2.Please point out which box will not fall.

    3.The main idea of the passage is _________.

    A. why things fall over　　　　         B. a low center of gravity

    C. a high center of gravity　　             D. that everything has weight

     

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    ---Excuse me. Can I take a seat here?

    ---__________. The woman who sat here will be back soon.

    　 A. We’d better not.　　　　　 B. No, thank you.

    　 C. Yes, please. 　　　　　　　　 D. I’m afraid you can’t.

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    (阅读理解)

    The earth moves round the sun, and the moon moves round the earth. When our part of the earth turns to the sun, it is day. When our part of the earth turns away from the sun, it is night.

    The sun is much bigger than the moon. But sometimes the moon looks bigger than the sun. Because it's much nearer to the earth.

    The sun is very bright. It gives very strong light. The moon looks quite bright too, but is doesn't give any light at all(根本). The light from the moon comes from the sun.

    The moon looks much bigger and brighter than the other stars. But in fact(实际上) many stars are much bigger and brighter than the moon. They look smaller than the moon because they are farther away from the earth.

    (1)

    When our part of the earth in China turns to the sun, it is ______ in America.

    A.day　　　　 B.night　　 C.sunny　　　　 D.cloudy

    [　　]

    (2)

    Sometimes the moon looks bigger than the sun because ______　.

    A.it's really big　　　　

    B.it's much nearer to the earth

    C.it comes out at night　　　　

    D.it's quite bright

    [　　]

    (3)

    The moon isn't the biggest among (在……中间)　the stars, is it?

    A.Yes, it is.　　　　

    B.No, it isn't.

    C.Yes, it isn't.　　　　

    D.No, it is.

    [　　]

    (4)

    Which is the most important to us?

    A.The sun.　　　　

    B.The moon.

    C.The stars.　　　　

    D.None of the above.

    [　　]

    (5)

    Which of the following sentences is right?

    A.The moon moves round the sun and the earth.

    B.The sun is much nearer to us than the moon.

    C.When our part of the earth turns away from the sun, it is daytime.

    D.No sun,no lives.

    [　　]

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    There are 47 different kinds of kangaroos（袋鼠）. The smallest are about a quarter of a meter long; the biggest are taller than a man.

    　　 Kangaroos have very long strong back legs. These are used for jumping. They also have long strong tails（尾巴）used for resting on. Kangaroos' front legs are much shorter, and are almost like arms. Kangaroos' heads are quite small, but their ears are quite large.

    　　 Mother kangaroos have a pocket at the front. They have one baby each year. When it is born, the baby kangaroo goes straight into its mother's pocket. The baby kangaroos stay there for six months.

    　　 The biggest kangaroos stand more than 2 meters tall, and their legs are so strong that they can jump more than 9 meters. They are very fast, and can travel at more than 50 kilometers an hour. They are very strong, but only eat fruit, leaves and grass.

    （　　）1. How many different kinds of kangaroos are there?

    A. seven　　　　　　 B. seventy-four　　 C. fourty-seven　　 D. forty-seven

    （　　）2. How large is a big kangaroo?

    　　　　　A. Smaller than a man 　　　　　　 B. Bigger than a man

    　　　　　C. The same size as a man　　　 D. A quarter of a meter long.

    （　　）3. Does each kangaroo have a pocket?

    　　　　　A. Yes, it does. 　　　　　　　　　　 B. No, it does.

    　 　　　 C. No, it doesn't. 　　　　　　　　　 D. It doesn't tell us.

    （　　）4. How long does a baby kangaroo stay in its mother's pocket?

    　　　　　A. one month　 　　　　　　　　　 B. three months　

    　　　　　C. six months　　　 　　　　　 D. five months

    （　　）5. How far can kangaroos jump?

    　　　　　A. More than 2 meters.　 　　 B. More than 9 meters.

    　　　　　C. Less than 2 meters.　 　　　　　　 D. Less than 9 meters.

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