It has been estimated that the earth’s surface temperature has increased one qua

游客2025-03-25 42

问题 It has been estimated that the earth’s surface temperature has increased one quarter to three quarters of a degree since 1805.

选项 A、to
B、by
C、at
D、with

答案 B

解析增加或降低/减少了多少用介词by，增加到或降低/减少到多少用介词to，考生一定要区分清楚。类似用法的词还有：decrease，fall，drop，reduce，rise等。题句意为：“据估计，自从1805年以来地球表面的温度已经增加了0.25度到0.75度。”

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