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    The snow storm left,      a lot of damage to this area.

    A．causedB．causingC．to causeD．to have caused

    B

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    1. 1.

      How many functions of snow are discussed in the passage?

      1. A.
        One
      2. B.
        Two
      3. C.
        Three
      4. D.
        Four
    2. 2.

      Why does snowfall help to protect plants from cold?

      1. A.
        Because snow crystals contain heat
      2. B.
        Because snow crystals have air in them
      3. C.
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        Because snow crystals send out heat when melting
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      It can be inferred that ______

      1. A.
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      2. B.
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      3. C.
        fresh snow is better in taking in sound waves than hard snow
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        hard snow provides less water than fresh snow
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      1. A.
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      2. B.
        send back all of the sunlight
      3. C.
        take in most of the sunlight
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    1. 1.

      Mountain snowfall _____

      1. A.
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      2. B.
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    2. 2.

      Snow protects plants and wild animals from cold weather by _____

      1. A.
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      2. B.
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      3. C.
        absorbing strong winds
      4. D.
        sending back sound waves
    3. 3.

      Snow can be deadly mainly because it can _____

      1. A.
        cause road accidents
      2. B.
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      3. C.
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    4. 4.

      What will the text probably tell us following the last paragraph? ____

      1. A.
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      2. B.
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      3. C.
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