Trees must be grown in ______.

试卷相关题目

• 1The Great Green Wall in China is ______ long.

  A.7,000 kilometers

  B.1,700 kilometers

  C.7,000 meters

  D.400 kilometers

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• 2A lot of good land has gone with ______.

  A.sand

  B.water

  C.wind

  D.forests

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• 3In 1620, about ______ the USA was covered by forests.

  A.a third

  B.half

  C.two thirds

  D.a fourth

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• 4______ will make the world better.

  A.The Great Wall

  B.Tall buildings

  C.Great Green Walls

  D.Flowers and grass

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