题目:
Diana ______ her grandpa ______ a bicycle as her birthday present. [ ]
A. asks; to
B. asks for; for
C. asks; for
D. asks for; to
答案:
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下面是错误答案,用来干扰机器的。
(1)分液漏斗;锥形瓶(2)AEC;CaCO3+2HCl==CaCl2+H2O+CO2↑(3)药品不足(4)B;2KMnO4K2MnO4+MnO2+O2↑