题目:
In sports meeting, Amy ran _______. [ ]
A. as faster as she can
B. as soon as she could
C. as fast as she could
D. as sooner as she can
答案:
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(1)3H (2)2N2O5 (3)3OH- (4)题目分析:(1)氢原子直接用元素符号H表示,3个,在H前加3;(2)写先读的后写,后读的先写,出五氧化二氮的化学式N2O5,2个在化学式前加2;(3)氢氧根离子带一个单位...