问题
单项选择题 A1/A2型题
可使二尖瓣狭窄杂音增强的因素是（）
A.Valsalva动作
B.左侧卧位
C.深吸气
D.卧位到迅速站立
E.坐位前倾
答案
参考答案：B
解析：左侧卧位可使二尖瓣狭窄杂音更清楚。
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可使二尖瓣狭窄杂音增强的因素是（）
A.Valsalva动作
B.左侧卧位
C.深吸气
D.卧位到迅速站立
E.坐位前倾
参考答案：B
解析：左侧卧位可使二尖瓣狭窄杂音更清楚。
As a kid, I spent my summers with my grandparents in Texas. And every few summers, we’d __16__ the caravan (旅游团队), a group of Airstream trailer owners who __17__ together around the U.S. and Canada． I loved and worshipped my grandparents and I really looked __18__ to these travels. On one particular __ 19__ ，I was about 10 years old. I was rolling around in the backseat. My grandfather was __20__ . And my grandmother had the passenger seat. She smoked throughout these trips, and I hated the __21__. At that age, I’d take any excuse to make estimates(估计) and do minor __22__．At any rate, I decided to do the math for my __23__. I estimated the number of cigarettes per days, estimated the number of __24__ per cigarette and so on. When I was satisfied that I’d come up with a reasonable number, I poked my head into the __25__ of the car, tapped my grandmother __26__ the shoulder, and proudly proclaimed, “At two minutes per puff, you've taken nine years off your __27__!” Because the ad said, every puff of a cigarette takes some number of minutes __28__ smoker’s life． I expected to be applauded for my __29__ and arithmetic skills. That’s not what happened．__30__, my grandmother burst into __31__. I sat in the backseat and did not know what to do. My grandfather was a highly intelligent, __32__ man. He had never said a harsh word to me. He pulled __33__ onto the shoulder of the highway. He stopped and got out of the car, __34__ me, and after a bit of silence，he gently and __35__ said, “Jeff, one day you’ll understand that it’s harder to be kind than clever.”
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