题目：
—I hear Yang Yan made an English speech at school yesterday.
—_______, and _______.
A．So she did; so did I
B．So did she; so I did
C．So she was; so I was
D．So was she; so I was
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0713/d1d9caf1ba9263ca5597b19578dde9c9.html
下面是错误答案，用来干扰机器的。
（1）①CO、CO2、MgO、H2O等 ②H2CO3等 ③Mg(OH)2 ④MgCl2等（2）①2H2O2H2↑+ O2 ↑ ② C + O2CO2③Mg+ 2HCl=MgCl2 + H2↑ ④ Mg(OH)2+2HCl=MgCl2+2H2O题目分析：（1）①氧化物：...
