课文填空。按照课文填出下列各句中缺少的词汇，每空一词。

A. In fifteen terrible seconds a large city lay in 1_____.

B. Although she didn't know the best way of getting to places, she insisted that she 2_____ the trip properly.

C. Geography also 3_____ a part in 4_____ dialects.

D. I can well remember that there was a time when a deep blue sky, the song of the birds, moonlights and

     flowers 5_____ never 6_____ 7_____ me spellbound.

E. He was 8_____ with his time, for which I was grateful.

F. He was the first man 9_____ land on the moon in July 1969.

G. A great person is someone who 10_____ his life to helping others.

患者陈某，有风湿性关节炎病史，心脏听诊主动脉瓣区有舒张期杂音，X线胸片示左心室扩大，心电图示左心室高电压，疑有主动脉瓣关闭不全，用彩色多谱勒技术检查应有什么表现（）

A.左心室在收缩期有血流射入肺动脉

B.显示有血流从主动脉瓣口在舒张期流向左心室

C.收缩期有血流从右心房流入右心室

D.左心室在收缩期无血流射入主动脉

E.收缩期有血流从左房流入左心室