Can you imagine that rats eat 40 to 50 times A.by weightB.their weightC.in weigh
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Can you imagine that rats eat 40 to 50 times _______
A.by weight
B.their weight
C.in weight
D.of their weight
试题答案
B
考查倍数表达法：倍数+名词（their weight），句意：你能想象老鼠吃的是体重的40-50倍吗？选B。A是按重量算，C是重量上，D是他们的重量。