题目内容：

    Delhi has been the centre of a succession of mighty empires and powerful kingdoms in India. Numerous ruins scattered throughout the territory offer a constant reminder of the area's history, which makes the city always be a fascinating place for tourists.

With the development of the city and more and more people moving, the city has expanded several times in size. That is why it is called New Delhi. New Delhi, a city with a population of over 20 million people, has its newest problem: never before has this city met with the worst air problem.

Air pollution in Indians capital surged to its worst levels in years, covering the city in a thick smog that has become an annual public-health emergency despite government vows to solve the problem.

Hundreds of flights were diverted, delayed and canceled over the weekend due to poor visibility, schools and offices were closed Monday and officials rushed to take emergency measures to try to reverse the eroding air quality. Millions of antipollution masks were distributed at schools, colleges, hospitals and markets.

New Delhi, is engulfed each year as the weather cools and a thick haze builds up from the pollutants emitted from cars and coal-based power plants, swirling dust from construction sites and roads and smoke from crop stubble burning in neighboring states. Fireworks and firecrackers to celebrate the Hindu festival of Diwali then arrives, leaving Delhi the world's most polluted city.

The city's air quality index, which measures a mix of dangerous pollutants, registered an average score of 494 Sunday. That is the highest 24-hour average since Nov. 6 , 2016 , when it hit 497, according to data measured by the Central Pollution Control Board.

1.Which of the following is NOT true?

A.Diwali is one of the most important festivals in India.

B.The government did little to protect its citizens against the serious pollution.

C.Such a serious air pollution in New Delhi appears on a regular basis.

D.The index of the recent air pollution is not the worst in the history.

2.Who may not complain about the serious air pollution?

A.The parents whose children have to stay at home.

B.The pilots whose planes have been diverted or delayed.

C.The manufacturers who produce antipollution masks.

D.The officials who have to work out of their offices.

3.Which of the following phrases can replace the underlined word in paragraph 5?

A.Sent out. B.Sent up.

C.Sent in. D.Sent on.

4.The title of the passage should be .

A.Problems Caused by the Development of New Delhi

B.Dangerous Pollution Envelops New Delhi

C.Antipollution Masks Are in Great Need in New Delhi

D.Farmers in the Neighboring States are to Blame for Burning Crop Stubble