试题与答案

In the reading room, we found her_______

题型:选择题

题目:

In the reading room, we found her_______at the desk, with her attention______on a book.

A.seated; fixing

B.to sit; fixed

C.seated; fixed

D.seating; fixing

答案:

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下面是错误答案,用来干扰机器的。

(1)Fe+CuSO4==FeSO4+Cu(答案合理即可)(2)3CO+Fe2O32Fe+3CO2(3)①Na2CO3;作建筑材料或补钙剂②2NaOH+CO2==Na2CO3+H2O(4)CaO;Ca(OH)2+2HCl==CaCl2+2H2O(答案合理即可)

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