FUN TIME
| 9 | 2 | 4 | 7 | 6 | 3 | 1 | 5 | 8 |
| 5 | 3 | 6 | 8 | 9 | 1 | 4 | 2 | 7 |
| X | 7 | 8 | 2 | 5 | 4 | 9 | 6 | 3 |
| 7 | 1 | 9 | 3 | 4 | 2 | 5 | 8 | 6 |
| 4 | 8 | 3 | 6 | 1 | 5 | 2 | 7 | 9 |
| 2 | 6 | 5 | 9 | 8 | 7 | 3 | 4 | 1 |
| 3 | 9 | 7 | 4 | 2 | Y | 6 | 1 | Z |
| 6 | 5 | 2 | 1 | 7 | 9 | 8 | 3 | 4 |
| 8 | 4 | 1 | 5 | 3 | 6 | 7 | 9 | 2 |
The rule of the puzzle is to fill in the grids (格子) so that every row, every line and every 3×3 box has the numbers 1 to 9. Here is a Sudoku. Please relax and enjoy. It’s fun!
根据以上杂志专栏内容，回答下列问题。
小题1:Who created Sudoku?
A．Howard Garnes.
B．Sudoku.
C．Kaji Maki.
D．Nikoli.小题2:Which is true about Kaji Maki according to the reading material?
A．He was the boss of Nissan Company.
B．He helped to make Sudoku popular in Japan.
C．He was the president of The Times.
D．He is an American.小题3:Which is NOT true about Sudoku?
A．Sudoku wasn’t invented in Japan.
B．It was The Times that first printed Sudoku in the newspaper.
C．Each grid has more than one number.
D．It became popular around the world in 2005.小题4:In the puzzle above, what should “X” be?
A．5.
B．4.
C．3.
D．1.小题5:What should “Z” be in the puzzle?
A．8.
B．5.
C．2.
D．4.
小题1:A
小题2:B
小题3:C
小题4:D
小题5:B
题目分析：短文大意：本文介绍了游戏 “数独”的产生历史。数独是由日本汉字SU和Doku构成，，但不是在日本发明。
小题1:细节理解题。根据第三行中It was created by Howard Garnes in 1979.可知选A。
小题2:细节理解题。根据文中In 1986, Kaji Maki, the president of Nikoli made the rules strict and clear. Soon in the same year Sudoku became popular in Japan.可知选B。
小题3:细节理解题。根据给出的例子，显然每个格子中只能有一个数字，所以选C。
小题4:细节理解题。根据The rule of the puzzle is to fill in the grids so that every row, every line and every 3×3 box has the numbers 1 to 9.结合该格中已经有了2-9、唯独缺少1，所以选D。
小题5:细节理解题。根据The rule of the puzzle is to fill in the grids so that every row, every line and every 3×3 box has the numbers 1 to 9.结合该格中已经有了1、2、3、4、6、7、8、9，唯独缺少5，所以选B。