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

试卷相关题目

• 1A lot of good land has gone with ______.

  A.sand

  B.water

  C.wind

  D.forests

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• 2The 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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• 3Trees must be grown in ______.

  A.China

  B.the USA

  C.some countries

  D.every part of the world

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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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