问题
选择题
We shouldn't complain about being poor, because many families are much ____ after the big
earthquake. [ ]
A. better off
B. badly off
C. well off
D. worse
答案
答案：D
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We shouldn't complain about being poor, because many families are much ____ after the big
earthquake. [ ]
A. better off
B. badly off
C. well off
D. worse
答案：D
CH2=CH-CH2Cl + HCl。请运用你学过的知识及上述信息，补写出从丙烯制取丙烯酸的其余各步反应方程式（注明必要的反应条件）_____________。