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:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0630/24f66192b8d392ed97f1fb9613b273c1.html
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)