血瘀型经期延长的首选方剂（）
A.血府逐瘀汤
B.通窍活血汤
C.少腹逐瘀汤
D.桃红四物汤合失笑散
E.桃红四物汤
参考答案：D
English has become the most widely spoken language in the world ______ its special role(作用) as
an international language. [ ]
A. because
B. from
C. with
D. because of
电梯井、管道井等选用（）施工有较大优势。
A.平模
B.大角模
C.小角模
D.筒模
