原文作者：胡蓉

　　a farmer has 17 sheep， and all but 9 die. how many are left？
　　why can’t a man living in the usa be buried in canada？
　　divide 30 by 1/2 and add 10. what is the answer？
　　do they have a 4th of july in england？ [论文网]
　　a doctor gives you three pills and tells you to take one every half hour. how long will the pills last？
 　　two men play five games of checkers （跳棋）.
　　each man wins the same number of games. there are no ties （平局）. why？
　　if you had only one match and you walked into a room where there was an oil burner， a kerosene lamp， and a wood burning stove， which one would you light first？
 　　a man builds a house rectangular （成矩形的） in shape. all sides have southern exposure （暴露）. a big bear walks by， what color is the bear？ why？
 　　name 6 or more things that you can wear on your feet that begin with the letter “s”.
 　　if there are 3 apples and you take away 2， how many do you have？
　　keys： 1. 9. 2. because he isn’t dead if he is living in the usa. 3. 70. 4. yes， but they don’t celebrate it. 5. one hour. 6. they were not playing each other. 7. the match. 8. white. because the house must be at the north pole. polar bears are there. 9. shoes， socks， stockings， sandals， skates， slippers， snowshoes. 10. two.