—Pop star Allen Su has done more than just donate money.

—Yes, he has made a song ______ We're together ______ the earthquake victims. [ ]

A. called; to cheer up

B. call; to cheer up

C. calling; cheer up

D. called; cheering up

左心衰竭的临床表现主要是由于（）

A.肺淤血、肺水肿所致

B.左心室扩大所致

C.体循环静脉压增高所致

D.肺动脉压增高所致

E.心室重构所致