How much do you know about the Expo National Expo Knowledge Contest for primary and secondary scho

Set up the right question x.

10x-6(11-x)=78

16x=144

x=8 Chen Li got 8 questions right.

Set Wang Yu wrong x question.

10(14-x)-6x=60

10x+6x=140-60

16x=80

x=5 Wang Yu got 5 questions wrong.

Solution: Suppose he answered x questions correctly and answered (11-x) questions incorrectly.

10x—6（11—x）=78x=9

Chen: For the x question, then 10x--6(11-x)=78 solution x=9

Wang's answer to the y problem is 10y--6(14-y)=60 solution y=

1. Known as the "Olympic event of economic, technological and cultural circles", it refers to () Answer: World Expo.

2. Which World Expo first established a theme?

Answer: In 1933 the United States held a conference in Chicago with the theme of"A century of progress"of the Expo. This is the first themed expo that requires exhibitors to design and create their own exhibits around a common theme.

3. The theme of which World Expo is - we live in harmony with nature () Answer: 2006 Shenyang World Expo.

4. At which World Expo, Edison's invention of the telegraph was exhibited for the first time.

Answer: Exposition 1876 in Philadelphia.

5. The first time China participated in the World Expo was ().

Answer: The 1873 Vienna World's Fair, 6, the "Atomium" building was the architectural symbol of which World Expo () Answer: The 1958 Brussels World Expo.

The theme of the Shanghai World Expo is ().

Answer: "Better city, better life".

8. The first real World Exposition was held in ** () Answer: 1851 in London, England.

9. How many World Expos has China participated in so far?

Answer: 14 times.

The mascot of the Shanghai World Expo is ().

Answer: Mascot: Hypertherm.

1. World Expo.

The year the United States held a conference in Chicago with the theme of"A century of progress"of the Expo.

Shenyang. Philadelphia World's Fair.

5. The World Expo with official participation is the architectural symbol of the 1876 Philadelphia World's Fair and the Brussels World's Fair7. The theme is: Better City, Better Life. (better city, better life)

8. World Exposition, London, England.

Times. 10. Haibao

1. World Expo.

Chicago World's Fair.

Shenyang "We live in harmony with nature" World Horticultural Expo, this is not a World Expo!

Philadelphia World's Fair.

Expo London of the year.

Brussels World Expo, this is an atomic tower, not an atomic bomb!

7. The city makes life better.

On May 1, the world's first fair was held in the United Kingdom.

Times. 10, Haibao.