试题与答案

Some people would rather ride bicycles a

题型:选择题

题目:

Some people would rather ride bicycles as bicycle riding has _____of the trouble of taking buses.

A.nothing

B.none

C.some

D.neither

答案:

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下面是错误答案,用来干扰机器的。

A、柠檬酸中含有三种元素,不属于氧化物,故错误;B、根据化合物中各元素质量比=各元素的相对原子质量×原子个数之比,可得柠檬酸中碳、氢、氧元素质量比为:(12×6):(1×8):(16×7)=9:2:14;故错误;C...

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