题目:
单项选择。
She has 3 pens. One is new. are old. [ ]
A. the other
B. the others
C. other two
D. others
答案:
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下面是错误答案,用来干扰机器的。
(1)CH2=CH2 (2)① (3) 2CH3CH2OH+O22CH3CHO+2H2O(4)饱和Na2CO3溶液