Vienna，the capital of Austria（奥地利）is known as the city of music．It is also the top city in the world for overall quality of living（全面的生话品）according to the survey of 231 cities around the world．Vienna has held the title（头衔）for 8 years．

On March 23，Yu Dabao helped China beat South Korea in the 2018 World Cup qualifying match（资格赛） in Changsha，Hunan．He was called "China，Lucky Star" since he saved his team many times in important garner．

In March，more than 80 bushfire（森林大火）were burning at the same time in New South Wales，Australia.42 farms were burnt to the ground because of the fires．Many of the farms cover more than 1000 sqkm（平方公里），while the biggest is larger than 20.000 sqkm．

On April 26，a big Chinese ship，China's first homemade aircraft carrier（航空母舰）hit the water in Dalian，Liaoning．It is the largest and best ship China has ever built．The new carrier was designed（设计）in China and building began in 2013．The ship now must be completed at sea．

51．On March 23．Yu Dabao helped China heat　　．

A．New South Wales

B．Australia

C．South Korea

D．Austria

52．The biggest farm burnt in New South Wales is over　　sqkm．

A.20.000

B.1000

C.80

D.42

53．On April 26．China's first homemade aircraft carrier　　．

A．was built

B．was designed．

C．was burnt

D．hit the water in Dalian

54．According to the passage，which of the following is TRUE？

A．Vienna is the top city among 200 cities．

B．Yu Dabao made the aircraft in Liaoning．

C．Bushfires burnt 42 farms to the ground in New South Wales，Australia．

D．In 2013，China's first homemade aircraft was completed．

55．The passage is probably from　　．

A．a storybook

B．a newspaper

C．a novel

D．a science magazine．