在等比数列{a_n}中，若a₁₀＝0，则有等式
a₁＋a₂＋…＋a_n＝a₁＋a₂＋…＋a_19－n(n<19，n∈N^*)成立．类比上述性质，相应地，在等比数列{b_n}中，若b₉＝1，则等式______________成立                

如图，直线a∥b，若∠1＝40°，则∠2＝    ▲  °．

	Digital Atomic Watch(数字原子表) This new watch is one of the most accurate(精准) watches in fashion. You never have to do another thing except change the battery - about once every two years! This Atomic Watch displays time (12 or 24-hour mode(模式)), weekday, date and month. Water resistant(抵抗的). Weight: 2.6 oz. Display Size: 0.75" W x 0.5" H. Face Size: 1.5" W. Band Size: 0.75" W x 8.25" L. Item: # DWW  Price: $ 40
	Dolphin Wood Kit(配套原件) Great for kids. Simple wood changed into an pretty 3-D model dolphin. No tools or glue required. Complete with 5-language instruction paper. Age 7+ Model Size: 8.5" (22 cm) long. Item: #7103-09   Price: $ 8 ($15 if you take two)
	Russian Nesting(嵌套) Dolls Russian nesting dolls are wooden dolls with one doll inside the other(7 in 1). The dolls are the ones which open piece after piece like words in a sentence, to reveal its beauty. They are all hand painted. The paint is safe for children. Wonderful souvenirs for visitors. Suitable gifts for kids. Height: 30cms. Item: # RND203   Price: $ 4 ($25 a set of dolls)

【小题1】Victor wants to buy a present for his 4-year-old cousin. He could buy         .
A. the digital atomic watch      B. the dolphin wood kit      C. the Russian nesting dolls
【小题2】If you know how to make up the dolphin wood kit, you need        to help you to finish it.
A. nothing                   B. glue                   C. some tools
【小题3】If you use a digital atomic watch, you should buy a battery         .
A. every half year             B. every year              C. every two years
【小题4】Maria wants to buy two sets of the nesting dolls and two dolphin wood kits, she should pay     .
A. $ 65                     B. $ 66                    C. $ 23
【小题5】From the ads we know that         .
A. you can’t wear the digital atomic watch when you go surfing
B. if you don’t know how to make up the dolphin wood kit, you can follow the instruction
C. the painting of the Russian nesting dolls are made by machines.

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!

 

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

 

 

 

 

 

 

 

 

 

 

 

根据以上杂志专栏内容，回答下列问题。

1.Who created Sudoku?

A. Howard Garnes.             B. Sudoku.                           C. Kaji Maki.                D. Nikoli.

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.

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.

4.In the puzzle above, what should “X” be?

A. 5.                                       B. 4.                                      C. 3.                              D. 1.

5.What should “Z” be in the puzzle?

A. 8.                                       B. 5.                                       C. 2.                              D. 4.

 

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

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.