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【单选题】
除叶酸外,与一碳单位代谢有密切关系的维生素是( )A.
维生素B1
B.
维生素B2
C.
维生素B6
D.
维生素B12
E.
生物素
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反馈参考答案：
举一反三
【单选题】Now many people_____higher degrees probably finish up nowhere when they try to get a highly－paid
A.
16. Now many people_____higher degrees probably finish up nowhere when they try to get a highly-paid job. A．with
B.
in
C.
for
D.
At
【判断题】Many people now try to avoid conveying emotions by communicating electronically.
A.
正确
B.
错误
【判断题】Many people now try to avoid conveying emotions by communicating electronically.
A.
正确
B.
错误
【简答题】Experts generally agree ...
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