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It is high time for us to take measures ...

It is high time for us to take measures to protect these old traditions and customs before they _____.

A.die out

B.die away

C.die off

D.die down

 

A 【解析】略
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    The sandstorm has a bad effect on human beings, but it also brings some good results. There wouldn’t have been our Chinese nation if there had been no sandstorms. Sandstorms have existed for millions of years, while the written history of human beings has lasted only 5,000 years. The Loess Plateau(黄土高原) was formed by sandstorms over millions of years. The Yellow River, while moving through the Loess Plateau, carries a great deal of sand and has formed the North China Plain. The Loess Plateau is regarded as the place where Chinese civilization(文明) began. If there had been no Loess Plateau, the North China Plain wouldn’t have existed, nor would have the Chinese civilization.

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