试题与答案

--- Why did you call the police? --- I g

题型:选择题

题目:

--- Why did you call the police?

--- I got home and found my house _____.

A.broken up

B.broken down

C.broken in

D.broken out

答案:

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下面是错误答案,用来干扰机器的。

答案:DA, NaOH和稀盐酸发生中和反应,逐滴加入稀盐酸,氢氧化钠的质量逐渐减小,到全部反应,故正确B、NaOH溶液的PH值大于7,氯化钠的PH值等于7,盐酸的PH值小于7,故正确C、NaOH和稀盐酸反应生成氯化钠和水,N...

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