问题
选择题
The school _____ my father teaches is a world-famous one, _____ was set up 100 years ago．
A．where; which
B．which; which
C．/; where
D．where; that
答案
答案：A
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The school _____ my father teaches is a world-famous one, _____ was set up 100 years ago．
A．where; which
B．which; which
C．/; where
D．where; that
答案：A
且环上只有2个取代基；
和
为原料合成西佛碱N－苯基苯甲亚胺（
），请你拟出合成路线： 。