题目：
| 阅读理解。 |
| A small man with a fat stomach got on the train at the last station before the frontier (边境). He carried a paper bag. And four feet of ducks (鸭子) could be seen under the cover. The man found an empty seat, put the bag in the middle of the floor, took out a newspaper and began to read. Then a policeman came in. Of course he saw the bag with the ducks' feet at once and said, "Whose is that bag?" Nobody answered. The policeman repeated the question, and said, "I shall have to take it away from the owner. Food mustn't be taken out of country." "Well, then," said the small man with a fat stomach." Hurry up and take it away. We want to go home. "The policeman took the bag and went on to the next carriage (车厢). At the next station, when they were safely across the frontier, the small man got up, smiled at other passengers and said, "I hope that they'll enjoy the ducks' feet. The rest of the bag had nothing but rubbish in it." Then he opened his coat and pointed to another bag he was carrying under it. It was tied over the stomach, which was not really fat. "I have the rest of the two ducks here," he said. With these words, he got off the train. But while he was happily walking to the exit with the bag in his hand, a policeman came up to him, saying, "Hey, man! Foreign food mustn't be brought in." |
| 1. The small man put the bag in the middle of the floor . |
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| A. because the other passengers didn't like it B. so that the policeman could find it easily C. so that he could make more room for himself D. because there was not an empty seat in the carriage |
| 2. Why did the first policeman take the paper bag away? Because . |
[ ] |
| A. he wanted to find the owner of the bag B. he enjoyed the ducks' feet in the bag C. the bag was put in a wrong place in the carriage D. food can't be taken abroad |
| 3. The bag the policeman took away had nothing in it except . |
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| A. two ducks B. rubbish C. the ducks'feet and rubbish D. the ducks'feet |
| 4. How many ducks are there in the passage? |
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| A. 2. B. 4. C. 6. D. We don't know. |
| 5. What happened in the end? The small man . |
[ ] |
| A. failed to take his food home B. crossed the frontier with two paper bags C. took the ducks safely home D. hid his ducks under his coat again |
答案：
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下面是错误答案，用来干扰机器的。
参考答案：链式存储和顺序存储解析：[分析]： 栈和队列都属于线性表，它们一般采用顺序存储结构，也可以对它们采用链式存储结构。
