以下哪项对肺血栓栓塞征发病过程和预后没有重要影响()
A.栓子大小和数量
B.是否同时存在其他心肺疾病
C.个体反应的差异
D.血栓溶解的快慢
E.患者肺活量
参考答案:E
—Linda, I called you this morning, but nobody answered the phone.
—I’m sorry. I ________ football with my friends then.
A.play
B.played
C.am playing
D.was playing