用于治肺虚久咳、痰少咽燥之症，宜选（）
A.紫菀
B.川贝母
C.陈皮
D.黄芩
E.半夏
参考答案：A
E-mail,as well as telephones, ______ an important part in daily communication. [ ]
A. is playing
B. have played
C. are playing
D. play
为了获得稳定的现金流，应当投资于哪种基金( )
A．创业基金
B．对冲基金
C．成长型基金
D．收入型基金
