A. the timely (及时的) discovery B. convenience C. sex equality D. its connection with humans E. the huge power F.

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问题 A. the timely (及时的) discovery   
B. convenience   
C. sex equality   
D. its connection with humans     
E. the huge power
F. its uncertainty
Scientists cannot accurately predict the course of a hurricane due to______.

选项

答案F

解析 关键词为scientist和predict,依据此关键词,在文中找到Predicting the path of a hurricane is one of the most difficult tasks for forecasters. It moves at a typical speed of 15 mph. but not always.意为:预测飓风的轨迹对预报员来说,是一项非常艰难的任务,因为它的速度相当的快,故选F。
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