--What are you going to do this weekend？

--I will go to visit my grandparents _____ I have time.

A. as far as     B. as much as      C. as long as     D as many as

慢性肺源性心脏病患者提示右心功能不全的主要体征是（）

A.双下肢水肿

B.肝颈静脉回流征阳性

C.心脏向左扩大

D.肺动脉瓣区第二心音（P₂）亢进

E.肝大，触痛阳性