下列关于震颤的叙述均正确，但应除外
A．震颤是血流经狭窄的瓣膜口或异常通道产生的
B．触到震颤可肯定心脏有器质性病变
C．震颤的强弱与病变狭窄的程度呈正比
D．狭窄越重，震颤越强，但过度狭窄则无震颤
E．听到心脏杂音，一定可触到震颤
参考答案：E
解析：震颤与心脏的杂音有相同的发生机制，触诊有震颤者，一般均可听到杂音，但能听到杂音，不一定能触及震颤，如瓣膜关闭不全时，则有杂音而较少有震颤，仅在房室瓣重度关闭不全时才可扪及震颤，因此答案是E，而其余各项叙述均是正确的。
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| A young officer (军官) was at railway station. He was on his 1 to visit his mother in another town, and he wanted to 2 her to tell her the time of his 3 , so that she could meet him at the station 4 her car. He looked in all his pockets but found that he did not have the right money for the telephone, so he went outside and looked 5 for someone to 6 him. At last an old soldier came by, and the young officer stopped him and said, "Have you 7 change (零钱) for ten pence?" " 8 ," the old soldier answered, and put his hand into his pocket. "I'll see whether I can help you." "Don't you know 9 to speak to an officer?" The young man said angrily. "Now 10 start again. Have you got change for ten pence?" "No, sir!" The old soldier answered angrily. | ||||
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