咳血方的臣药是（）

A.青黛、栀子

B.瓜蒌、海粉

C.当归、川芎

D.柴胡、大黄

E.桃仁、红花

High school and college students today are pushed so much in the direction of specialization ()little time is left for the further development of the basic reading skills initiated in earlier years.

A. as

B. so that

C. that

D. therefore