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【单选题】
以下对计算机病毒叙述正确的是( )。A.
都破坏操作系统
B.
不破坏数据，只破坏程序
C.
有些病毒可能破坏硬件系统
D.
有些病毒无破坏性
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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】预应力筋锚固后的外露部分宜采用（）。外露长度应符合设计要求；当设计无规定时，后张法预应力筋外露长度不宜小于预应力筋直径的（）倍，且不宜小于（）mm。
【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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