第一部分、阅读理解（75分）
下面有三篇短文，每篇短文后有几具问题，每个问题都有四个备选答案。请仔细阅读短文，并根据短文回签其后面的问题，从四个备选答案中选择一个最佳答案涂在答题卡相应的位置上。
第一篇 Denny
His nickname is Denny. He weighs 400 pounds; he is fearless and he never goes to sleep on the job. An ideal security guard? For many situations he may be. And if he’s so good that you wish you had a dozen like him, just place your order. Denny is a robot guard.