皇甫谧著有（）
A.《金匮要略》
B.《外科正宗》
C.《医门法律》
D.《黄帝针灸甲乙经》
E.《万病回春》
参考答案：D
(2013·高考江苏卷)The president of the World Bank says he has a passion for China，________he remembers starting as early as his childhood.
A．where
B．which
C．what
D．when
下列物质中存在顺反异构体的是 ( )
A．2－氯丙烯
B．丙烷
C．2－丁烯
D．1－丁烯
