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参考解析：
刷刷题刷刷变学霸
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】能见度低于1500米时，禁止（）进出港、靠离泊
A.
施工船及不熟悉港口通航环境的船舶
B.
拖带船组、试航船舶、吃水受限制的船舶、操纵能力受限制的船舶、载有危险货物的船舶
C.
除集装箱班轮外的其他货船
D.
所有船舶