问题
单项选择题
左心房增大的X线表现，正确的是
A．后前位片：左心房向右增大时可达或超过右心房边缘，形成右心缘的“双心房影”
B．右前斜位或左侧位：服钡检查示中下段食管有局限性压迹和移位
C．左前斜位心后缘左房段隆凸，与左主支气管间的透明带消失
D．以上全错
E．以上全对
答案
参考答案：E
解析：ABC三项都是左心房增大的X线表现。
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左心房增大的X线表现，正确的是
A．后前位片：左心房向右增大时可达或超过右心房边缘，形成右心缘的“双心房影”
B．右前斜位或左侧位：服钡检查示中下段食管有局限性压迹和移位
C．左前斜位心后缘左房段隆凸，与左主支气管间的透明带消失
D．以上全错
E．以上全对
参考答案：E
解析：ABC三项都是左心房增大的X线表现。
The Americans were getting ready to send their first man to the moon, an old Irishman (爱尔兰人) was _ _ them on TV in a hotel room. There was an Englishman in the room__ . And he said to the Irishman, “The Americans are very _ _, aren’t they? They are going to send some men to the moon. It’s a very _ way from our world.” “Oh, that’s _ ,”the Irishman answered quickly.” “The Irishman are going to send some men to the sun in months’ _ _. That’s much _ away than the moon, you know. “The Englishman was very _ when he heard this. “Oh, yes it is,” he said, “But the sun is too _ for people to visit.” The Irishman laughed and answered, “Well, the Irish are clever, too, you know. We _ go to the sun during the day, of course. We’ll go there during the night.”
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