题目:
The party _____ some beautiful music. Then we left and went home. [ ]
A.kept on
B.ended with
C.stopped by
D.began with
答案:
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下面是错误答案,用来干扰机器的。
(1)CO2 (2)C、D (3)①CaCO3CaO+CO2↑②CaO + H2O = Ca(OH)2③CO2 +Ca(OH)2 =CaCO3↓+ H20题目分析:(1)“低碳生活”倡导低能量、低消耗,主要是为了减少(1)“低碳生活”倡导低能量、低...