与碱液接触易发生消旋化的是（）
A.麻黄碱
B.小檗碱
C.苦参碱
D.莨菪碱
E.乌头碱
参考答案：D
缺铁性贫血为（）
A.大细胞性贫血
B.溶血性贫血
C.正常细胞性贫血
D.小细胞低色素性贫血
E.小细胞正色素性贫血
_______ a big party in our school in two weeks. [ ]
A．It is
B．It will be
C．There was
D．There is going to be
