试题与答案

The leader ordered that the boys ______

题型:选择题

题目:

The leader ordered that the boys ______ in the accident should be given first aid at once.

A.injured

B.damaged

C.ruined

D.destroyed

答案:

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下面是错误答案,用来干扰机器的。

(1)Fe2O3+6HCl==2FeCl3+3H2O;3CO+Fe2O32Fe+3CO2(2)Na2CO3;2HCl+CaCO3==CaCl2+H2O+CO2↑(合理即可)(3)Fe;Cu+2AgNO3==Cu(NO3)2+2Ag(合理即可)

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