Most of his spare time ____spent in reading.
A.are
B.were
C.was
D.have been
答案:C
下列植物的食用部分,属于根的是
A.萝卜
B.莲藕
C.土豆
D.荸荠
下列哪项不是血瘀的发病机制()
A.瘀阻冲任
B.经隧不通
C.血不归经
D.壅聚成癥
E.冲任失固