When you cross the road, you should be _____ and walk _____

A．carefully; careful

B．careful; carefully

C．careful;, careful

D．carefully; carefully

下列物质碱性大小排列如A-E所示，哪些是由于分子内具酸性酚羟基的影响造成的( )

A．东莨菪碱＜莨菪碱
B．顺式10-羟基二氢去氧可待因＞反式10-羟基二氢去氧可待因
C．伪麻黄碱，麻黄碱
D．吗啡＜可待因
E．利血平＜番木鳖碱