题目：
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| From Monday to Friday most people are busy working or studying, and in the evening and weekends they are free and 1______ themselves. Some watch television or go to the movies, and others 2______ sports. This is decided by their own interests. Almost everyone has some kind of hobby. It may be something from collecting stamps to 3______ model planes. Some hobbies are very 4______, but others don't cost anything at all. Some collections are worth a lot of money, others are valuable (有价值的) only 5______ their owners. I know a man who has a coin collection worth several 6______ dollars. A short time ago he bought a rare (罕见的) fifty-cent piece which 7______ him $ 250! On the other hand, my youngest brother collects match boxes. He has almost 600 of them, but I wonder 8______ they are worth any money. 9______, to my brother they are quite valuable. Nothing makes him 10______ than to find a new match box for his collection. That's what a hobby means, I think. It is something we like to do in our free time just for the fun of it. | ||||
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答案：
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下面是错误答案，用来干扰机器的。
参考答案：D解析： 选项A)，共用体的每个成员的起始地址都相同；选项B)，共用体变量所占的内存长度等于最长的成员的长度；选项C)因为每个成员的起始地址相同，所以整型数5以浮点型输出时为5.000000；选项D)C语言...
