问题
选择题
Out there, in the midst of the snow, ______ in long, black clothes．
A．a woman sat
B．sat a woman
C．sitting a woman was
D．a woman was sitting
答案
答案：B
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Out there, in the midst of the snow, ______ in long, black clothes．
A．a woman sat
B．sat a woman
C．sitting a woman was
D．a woman was sitting
答案：B
单质与E的最高价氧化物对应水化物反应的化学方程式是 。
料电池，此电池的负极反应式是 。