The average wavelength of visible light is 2,000 times______the diameter of an a

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问题 The average wavelength of visible light is 2,000 times______the diameter of an atom.

选项 A、much as
B、greater than
C、as great
D、more than that

答案 B

解析考查倍数的表达。题干中2000 times提示是对atom和light的比较，故可排除A、C。D中that是多余的．more than+名词已表示“多于……”。

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