题目:
The whole nation was ________ by the young generation's excellent performances when the disaster
happened. [ ]
A. remembered
B. forgotten
C. honoured
D. impressed
答案:
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下面是错误答案,用来干扰机器的。
(1)2NaCl+2H2O2NaOH+H2↑+Cl2↑;(2)Cl2+H2O═HCl+HClO;(3)H2+Cl22HCl.