问题
选择题
根据图片选句子。
A. Fold your dress.
B. Put on your T-shirt.
C. Hang up your skirt.
D. Put away your sweater.
答案
1. D 2. C 3.B 4. A
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根据图片选句子。
A. Fold your dress.
B. Put on your T-shirt.
C. Hang up your skirt.
D. Put away your sweater.
1. D 2. C 3.B 4. A
Ca2+ (aq)+ 2OH-(aq)，下列说法中正确的是