【单选题】下列有机物分类、组成、结构、性质相关的叙述错误的是( )
D.
春蚕到死丝方尽,蜡炬成灰泪始干”中的“丝”和“泪”分别是蛋白质和烃
【单选题】-When ________ again? -When he _____, I’ll let you know. A. he comes; come B. will he come; will come C. haven’t known; are D. will he come; comes
B.
will he come; will come
【单选题】下列属于脂溶性维生素的一组是( )
B.
维生素A、维生素B1、维生素B2、维生素C、维生素E
D.
维生素B1、维生素B2、维生素B6、维生素C、维生素K
【单选题】— _____? — He said he was coming but he hasn't _____ yet. [ ]
A.
Does he come tonight, come
B.
Is he coming tonight, appeared
C.
Will he come togight, presented
D.
Why not come tonight, seemed
【单选题】Do you know when _____ ? [ ]
【单选题】Here ______. A. does he come B. he comes C. comes he D. he come
【单选题】下列有机物分类、组成、结构、性质相关的叙述错误的是( )
D.
“春方尽,蜡炬成灰泪始干”中的“丝”和“泪”分别是蛋白质和烃