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【单选题】
7岁男孩，平时反复发生呼吸道感染，每年发生肺炎2～3次，活动后乏力、气促、无发绀。胸骨左缘第3～4肋间有Ⅲ～Ⅳ级收缩期杂音，粗糙，传导广，伴震颤。临床怀疑先天性心脏病：室间隔缺损。此患儿胸骨左缘第3～4肋间的Ⅲ～Ⅳ级全收缩期吹风样粗糙杂音产生的机制是（）A.
血流通过缺损口产生
B.
相对的肺动脉瓣狭窄
C.
相对的左房室瓣狭窄
D.
相对的右房室瓣关闭不全
E.
相对的主动脉瓣狭窄
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举一反三
【单选题】听力原文：Why are you so upset today? (A) Because my boss are not satisfied with my work plan. (B) Because I set up my own business. (C) Because I am going to have a holiday. (28)
A.
B.
C.
【简答题】当预应力筋的长度小于(__),时,宜采用一端张拉;若长度大于(__),时,宜采用两端张拉,长度超过(__),m时,宜采取分段张拉。
【单选题】听力原文：W：Why are you so upset? You told me that you picked up 200 dollars on the bus．I thought you should be happy． M：Yes，then another passenger also saw the money，and I gave him a half，but I didn't fin...
A.
He got 200 dollars on the bus.
B.
He got 100 dollars at home.
C.
He lost 100 dollars on the bus.
D.
He lost 200 dollars at home.
【简答题】Why are you so critical about internship programs?
【单选题】听力原文：W: Why are you so upset? You told me that you picked up 200 dollars on the bus. 1 thought you should be happy. M: Yes, then another passenger also saw the money, and 1 gave him a half, but 1 didn...
A.
He got 100 dollars at home.
B.
He lost 200 dollars at home.
C.
He got 200 dollars on the bus.
D.
He lost 100 dollars on the bus.
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