题目内容
7. Sandstorms a major disaster for many Asian countries for centuries.
A. were B. are
C. have been D. will be
7. C
7. C解析:根据时间状语for centuries可 知应用完成时态,故选C项。
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题目内容
7. Sandstorms a major disaster for many Asian countries for centuries.
A. were B. are
C. have been D. will be
7. C解析:根据时间状语for centuries可 知应用完成时态,故选C项。