正确答案: A

用酚酞试液鉴别稀硫酸和Na2SO4 溶液

题目：下列鉴别物质的方法中，不可行的是（ ）。

解析：A

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举一反三的答案和解析：

[单选题]（C）ZhaoTao,astudentfromNo.2MiddleSchool,hasjustcomebackfromShanghai.Thismorning,hetoldussomething

BetterCity,BetterLife.

[单选题]Years ago，l lived in a building in a large city． The building next door was only a few feet away from mine． There was a woman who lived there，whom I had never met，yet I could see her seated by her window each afternoon，sewing or reading．After several months had gone by，l began to notice that her window was dirty． Everything was unclear through the dirty window．I would say to myself，"l wonder why that woman doesn't wash her window． It really looks terrible．”

the writer's window was dirty

解析：11．B【解析】第五段告诉我们，实际上是作者自己的窗户脏，故选B．

[单选题]—You look very nice in the blue skirt.

Thank you

[单选题]32． We traveled all night to London and got there ________ Sunday morning．

on

解析：32．B【解析】具体到某一天或某一天的早晨、下午或晚上时，用介词on．

[单选题]I _____ the wrong thing. Can I use your eraser?

wrote

[单选题]What will the author most probably discuss in the paragraph that follows?

Solutions for the parent –teen problems

[单选题]下列加点的词语不能体现说明文语言准确性的一项是（ ）

未来的台阶也一定是既能体现中国传统建筑文化的特点……又能把现代文化科技与传统工艺完美结合。

[单选题]

decided