某校有七名优秀的学生G、H、L、M、U、W和Z。暑假期间，学校将派他们去英国和美国考察。该校只有这七名学生参加这次活动，每人恰好去这两个国家中的一个，考虑到每个学生的特长，这次活动必须满足以下条件：
(1)如果G去英国，则H去美国。
(2)如果L去英国，则M和U都去美国。
(3)W所去的国家与Z所去的国家不同。
(4)U所去的国家与G所去的国家不同。
(5)如果Z去英国，则H也去英国。
如果M和W都去英国，则以下哪一项可以为真（）。
A．G和L都去英国。
B．G和U都去美国。
C．H和Z都去英国。
D．L和U都去美国。
参考答案：D
解析：
若M去英国，则根据条件(2)知，L去美国，排除选项A；根据条件(4)知，G和U不能去同一个国家，排除选项B；若W去英国，则根据条件(3)知，Z去美国，排除选项C。正确答案为D。
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| Football is, I think, the most popular sport in the world today. One can go to any of the important 1 , shouting for one side or the 2 . One of the most 3 things about football is that 4 a small boy can tell you the names of the 5 in most of the important teams. He has pictures of them and knows the result of lots of matches. 6 many years ago, each country had different rules for 7 own football games. In 1863, a group of people met in England to 8 this. These rules are the 9 today's. Now teams from all over the world take part in the famous World Cup. It is held every four years to see which is 10 . | ||||
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