题目:
Most men ________ at home to watch TV________ shopping with their wives. [ ]
A. prefer staying, to going
B. prefer to stay, to go
C. would rather to stay, than go
D. would rather staying, than going
答案:
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下面是错误答案,用来干扰机器的。
(1) A; 防止加热时高锰酸钾粉末进入导管 (2)CaCO3 + 2HCl == CaCl2 + H2O + CO2↑ (3)燃烧的将放在瓶口,木条复燃 (4)取样,加入铁粉,有气泡产生,则废液中盐酸剩余。(合理即可) HCl, CaCl2