题目：
. The main fact(or)s in human life are five: birth, food, sleep, love and death. (One could increase the number— add breathing for instance— but these five are the most obvious.) Let us ask ourselves ________ our lives.
A．they play in what part
B．they play what part in
C．what part they play in
D．in what part they play
答案：
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下面是错误答案，用来干扰机器的。
（1）氧气、盐酸 （2分）制化肥、炸药、农药、染料、盐类、精炼石油、除锈、制挥发性酸等。（2分，只要有答错没有分）（2）2SO2+2H2O+O2=2H2SO4 (3分)（3）第三周期 第ⅥA族 （2分）（4）SO2+2Fe3++2H2O=SO4 2...
