问题
选择题
I'm not twelve, he is not twelve, ______________.[ ]
A. too
B. either
C. to
D. neither
答案
答案：B
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I'm not twelve, he is not twelve, ______________.[ ]
A. too
B. either
C. to
D. neither
答案：B
和CH3O—CH2CHClCOOH的系统名称分别是()和().