单项选择题

下列哪种物质缺乏可引起血液丙酮酸含量升高 A.
TPP B.
叶酸 C.
吡哆醛 D.
维生素B12 E.
NAD+

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单项选择题
Which of the following is wrong when answering“What a wonderful dress you’re wearing!”? ( )
A．I’m glad you like it.
B．I don’t think its color suits me.
C．Thank you for saying so.
D．How kind of you to say so.