试题与答案

—Mum, it is nice weather. I want to skat

题型:选择题

题目:

—Mum, it is nice weather. I want to skate this afternoon.

—Don’t you think the ice on the lake is too thin to ________ your weight.

A.stand

B.catch

C.bear

D.take

答案:

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溶于水得到白色固体和无色溶液无色澄清溶液,说明原试样中无溶于水后显颜色的物质、且有不溶于水的物质,排除FeCl3;过滤,将白色固体放入试管中,滴加足量足量稀硝酸,有气泡产生,固体部分溶解.说明含有能溶于...

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