How are tornadoes distinguished from whirlwinds? The author refers to straw embedded in fence posts in order to show

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问题 How are tornadoes distinguished from whirlwinds?
The author refers to straw embedded in fence posts in order to show

选项 A、where tornadoes occur.
B、who makes reports about tornadoes.
C、when tornadoes take form.
D、how tornadoes affect physical objects.

答案D

解析 本题是一道理解分析题。这道题要求考生进行分析。前面文中提到龙卷风能造成巨大破坏,然后提到龙卷风使稻草嵌入栅栏柱上的例子,作者的意图当然是要强调龙卷风在物体上作用有多么强大,所以四个选项中很容易找出正确答案。
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