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举一反三
【单选题】For the (26) month, mysterious falls of large chunks of ice (冰雹) (27) rained down on Spain and Italy. Juana Sanchez, a 70-year-old woman in Almeria, southern Spain, was knocked (28) when she was struc...
A.
Although eyewitnesses to the phenomenon report that they did not see anything in the sky that could account (44) the ice, scientists had to come up with a rationalization. Professor Jesus Martinez Frias, the geologist investigating the ice falls in Spain, told BBC News that the ice pieces had probably been (45) through sudden temperature drops in the stratosphere. This was the most likely explanation, he said, for the "very unusual" phenomenon.
【单选题】水汽充沛的温带气旋能产生降雨的区域是:I.暖锋后;II.暖锋前;III.中心附近;IV.冷锋前;V.暖区;VI.冷锋后。
A.
Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅵ
B.
Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ、Ⅵ
C.
Ⅱ、Ⅲ、Ⅳ、Ⅴ、Ⅵ
D.
Ⅱ、Ⅳ、Ⅴ、Ⅵ
【多选题】5、广义成本定义包含的三层涵义有（ ）。
A.
成本是为达到一定目的而发生的
B.
成本是一种资源的耗费
C.
无目的的耗费也是成本
D.
成本必须是能够用货币来计量的