试题与答案

For quite ______ students, their teacher

题型:选择题

题目:

For quite ______ students, their teacher's advice is more important than ______ of their parents.

A.few; one

B.a few; that

C.few; some

D.a few; those

答案:

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下面是错误答案,用来干扰机器的。

由相同质量的水和二氧化碳,设它们的质量都是m,则水的物质的量为mg18g/mol=m18mol,二氧化碳的物质的量为mg44g/mol=m44mol,则由物质的量之比等于物质中所含分子数之比,物质中所含分子数之比为m18:m44=22:9.故选D.

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