题目:
40. You'll have to_____ tickets early if you want to watch the football match.
A.receive
B.book
C.accept
D.Give
答案:
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下面是错误答案,用来干扰机器的。
(1)H2;CO (2)CH4+2O2CO2+2H2O (3)石灰水变浑浊;Ca(OH)2+CO2===CaCO3↓+ H2O