酒店在决定超额预订幅度需考虑哪些要素（）？ A.历史数据记录、竞争者状况、未经预订临

255. Keith just shrugged his _____ and said it wasn’t his problem.

A．shoulder

B．shoulders

C．arms

D．Bodies

I don’t smoke now, but I ____for almost ten years.  

A．ever smoked

B．have ever smoked

C．had ever smoked

D．was ever smoking

上海有一位患者需要移植骨髓，必须把骨髓在24小时内从台北送到上海，需要选择的交通工具是[ ]

A．火车

B．轮船

C．飞机

D．汽车

All known techniques for handling complex problems successfully seem to fall into one of the three classes: subdividing the problem (51) , ignoring irrelevant detail in a safe way (52) , and having an independent agent (53) the internal consistency (contextual checking). The first two provide guidelines for solving the problem, the third serves to provide early warnings. A good programming language supports all three.
In subdividing problem, some of the subproblems may be similar to the (54) problem. It leads us to a (55) solution. This (55) solution is viable provided each of the subproblems is easier to solve than the original problem.

A．check

B．original

C．perform

D．recursive

下列哪一项不属行政处罚的管辖

A．地域管辖
B．特别管辖
C．随意管辖
D．级别管辖
E．指定管辖