肺动脉栓塞患者死亡的常见原因是（）
A.急性右心衰
B.急性左心衰
C.肾衰竭
D.中毒性休克
E.大片肺出血
参考答案：A
Tom, Jack and Rose were named as assistant professors. Believe it or not, ______ three of them were of ______ age.
A．不填; an
B．不填; the
C． the; an
D． the; the
FCA、CPT和CIP三种术语是分别从（）三种传统术语发展起来的。
A.FOB、CFR、CIF
B.FAS、CFR、CIF
C.FOB、CFR、DAF
D.EXW、FOB、CIF
