A.c＞b＞aB.b＞a＞cC.a＞c＞bD.a＞b＞c-找考题网

单项选择题

A.c＞b＞a
B.b＞a＞c
C.a＞c＞b
D.a＞b＞c

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单项选择题

A.这种信息素不可以与溴发生加成反应B.它可以发生银镜反应C.D.它是乙烯的同系物

A.这种信息素不可以与溴发生加成反应
B.它可以发生银镜反应
C.
D.它是乙烯的同系物

多项选择题

Which of the following are true about the principles of helping teachers motivate students to write? ( )A.Encourage only individual writing.B.Provide opportunities for students to share their writings.C.Treat students errors strategically.D.Give students a sense of achievement from time to time.

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