There are___1___in the passage about nanometer(纳米) technology we have just read.

题干

There are___1___in the passage about nanometer(纳米) technology we have just read. Please tell me the general meaning of the first one.

A．persons

B．paragraphs

C．articles

D．Units

上一题下一题 0.85难度单项选择更新时间:2010-04-21 09:26:57

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