[题目]下列说法中.不正确的是( )A．SiO2和CO2都是酸性氧化物.均可与NaOH溶液反应B．水晶项链.石英钟都是硅酸盐制品C．SiO2和CO2在一定条件下.均可与CaO发生反应D．SiO2不溶于水.而CO2可与水反应.生成H2CO3 题目和参考答案——青夏教育精英家教网—

题目内容

【题目】下列说法中，不正确的是( )

A．SiO2和CO2都是酸性氧化物，均可与NaOH溶液反应

B．水晶项链、石英钟都是硅酸盐制品

C．SiO2和CO2在一定条件下，均可与CaO发生反应

D．SiO2不溶于水，而CO2可与水反应，生成H2CO3

【答案】B

【解析】水晶项链、石英钟的主要成分都是SiO2，不是硅酸盐制品。

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【题目】短文改错。

下面短文中有10处语言错误。请在有错误的地方增加、删减或修改某个单词。

增加：在缺词处加一个漏字符号（∧），并在其下面写上该加的词。

删除：把多余的词用斜线（/）划掉。

修改：在错的词下划一横线，并在该词下面写上修改后的词。

注意：1.每处错误及其修改均仅限一词；

2.只允许修改10处，多着（从第11处起）不计分。

When I was a very young children, my father created a regular practice I remember well years late. Every time he arrived home at end of the day ,we’d greet het at the door. He would ask who we was and pretend not to knowing us, Then he and my mother would have had a drink while she prepared dinner and they would talk about his day and hers. While they chat, my father would lift my sister and me up to sit in the top of the fridge. It was both excited and frightening to be up there！

My sister and I thought he was so cool for putting us there.

When I was a very young children,my father created a regular practice I r

Child emember well years late.Every time he arrived home at ∧end of the day ,

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