Reading Comprehension 
从下列每篇短文的问题后所给的四个选择项中选出一个最佳答案。
     Mrs. Tompkins complained about a large dog which was frequently found sitting in the best armchair in the sitting-room of the Halfway Hotel in Silbury.
     "I can't understand," she said to the manager, "why you allow dogs in the sitting-room at all, Mr. Goff. The proper place for a dog is outside. Can you please keep the animal out?"
     Mr. Goff promised to do what he could. He went to talk the matter over with his wife. Mrs. Goff herself had noticed this dog and she agreed with Mrs. Tompkins.
     "But we don't want to drive anyone away" said Mr. Goff. "If we refuse to allow dogs in the hotel, dog-owners won't come here to stay, and we''ll lose money."
     They discussed dogs for some time and finally agreed that dogs could come into the hotel, but must not sit in the chairs. Then Mrs. Goff drew up a rough notice and showed it to her husband: "Dogs must not be allowed to sit on the furniture."
     "I don't like it very much," Mr. Goff said doubtfully. "It isn't polite. It's like an order. We don't want to make dog-owners angry."
     Mrs. Goff went away to think again. Some time later notice was put up near the front door of the hotel. Mrs. Goff had drawn a picture of a dog's head at the top. The words below the drawing were as follows:

     When Mr. Goff saw this notice for the first time, he went to find his wife, and said to her in a doubtful voice, "I'm still rather worried about that notice. English dogs may be able to read it, but if any foreign dogs come to stay, they won't understand it."