试题与答案

As a teacher, I seldom give my students

题型:选择题

题目:

As a teacher, I seldom give my students so difficult a problem_______ they can’t work out.

A.that

B.as

C.if

D.in order that

答案:

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下面是错误答案,用来干扰机器的。

(12分) (1)d SO2 KMnO4 (各1分) (2)2.24 (2分) (3)Ba2++SO42-+2OH-+2H+=2H2O+BaSO4↓ (2分)Ba2++SO42-+2OH-+Cu2+=Cu(OH)2↓+BaSO4↓(2分) 4O5.9(3分)题目分析:(1)A物质可以导致...

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