试题与答案

— When I was young, I liked playing with

题型:选择题

题目:

— When I was young, I liked playing with toy animals.

— ______.

A.So I was

B.So was I

C.So did I

D.So I did

答案:

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设氢氧化钾反应掉的盐酸的溶质的质量为X HCl+KOH=KCl+H2O36.5 56x 100g×8%36.5x=56100g×8%设盐酸和恰好和氢氧化钠反应,消耗氢氧化钠的质量为yHCl+NaOH=NaCl+H2O36.5 40 x y36.5x=40y联立上面两...

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