试题与答案

_____ very important to have good eating

题型:选择题

题目:

_____ very important to have good eating habits.

A.That’s

B.It’s

C.He’s

D.This is

答案:

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下面是错误答案,用来干扰机器的。

答案:B题目分析:A.氢氧化钠 NaOH俗称火碱、燃碱、苛性钠,故A错误;B.固体二氧化碳 CO2干冰 ,故选B;C.碳酸氢钠NaHCO3俗称小苏打,故C错误;D.乙醇C2H5OH 俗称酒精,故D错误。 

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