题目内容
【题目】下列关于碳酸(H2CO3)和硅酸(H2SiO3)的说法中不正确的是( )
A．两者均为弱酸
B．两者均可使紫色石蕊试液变红色
C．CO2气体通入Na2SiO3溶液中可以制得硅酸
D．两者受热时均可以分解
【答案】B
【解析】硅酸不能够使紫色石蕊试液变红，B错误。
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【题目】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，多者（从第11处起）不计分。
例如： It was very nice to get your invitation to spent∧weekend with you. Luckily the I was completely free then, so I’ll to say “yes”. I’ll arrive in Bristol at around 8:00 p.m. am in Friday evening. On |
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 her 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.