FUN TIME

Are you tired of the puzzles you usually do? Sudoku is a new choice. Sudoku consists of the Japanese characters Su (meaning “number”) and Doku (meaning “single”), but it was not invented in Japan. It was created by Howard Garnes in 1979. The puzzle was first introduced into Japan by Nikoli Puzzle Company in 1984. In 1986, Kaji Maki, the president of Nikoli made the rules strict and clear. Soon in the same year Sudoku became popular in Japan. In November 2004, The Times, a British newspaper, first printed it in the newspaper. It became an international hit in 2005. Now Sudoku becomes very popular all over the world.

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.

脑梗死发病2～3周（）

A.低密度，边界不清，轻度占位效应，脑沟消失

B.低密度或等密度，出现模糊效应，水肿消退，出现脑回增强，占位效应减弱

C.病灶呈低密度，占位效应明显

D.水样低密度，边缘清晰，呈负压性改变

E.无明显改变，偶可见灰白质界限模糊