单选题
The two factors concerning hurricanes that scientists most want to learn about are______.
A、
conditions in the "eye" and conditions at the edge
B、
the forces that generate them and their frequency
C、
the number of people injured and the amount of damage done
D、
how fast and where they move
【正确答案】
D
【答案解析】
事实细节题。由文章第一段倒数第二句…especially the speed and direction of the winds可知。
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