阅读下面短文，掌握其大意，然后从各题所给的四个选项（A、B、C和D）中，选出最佳选项。
A
Traffic jams cost average Beijinger $1,126 annually
By Meng Jing (chinadaily.com.cn)
Beijingers（北京人） lost as much as 7,972 Yuan on average to traffic jams last year, the highest in the country, said a report.
Published by Didi Kuaidi, China's largest ride-hailing application and its partners, the report revealed Beijingers on average spent 52 minutes travelling 19.2 kilometers daily between their home and office.
Whit
The cost ranged between 7,972 yuan and 6,324 yuan per person in the four cities whose residents are among the best paid employees in China.
Research based on data collected on Didi Kuaidi's online platform showed that not only those in mega cities suffered from poor traffic conditions.
The report said residents in second-tier cities spent 37 minutes on average between home and work with a travelling speed of 23 km/h due to congestion. The speed was even slower than first-tier cities' 24 km/h.
So, ____________________ For instance, the Fourth Ring Road in Beijing in a morning rush hour. City authorities are working on solutions to ease the pressures on traffic in the city.
21. According to the passage, People live in Beijing usually lost about _________ Yuan each month.
22. What is cause the congestion based on the text?
23. What does the underlined sentence “mega” means? ___________.
24. At last paragraph , which sentences can be written in the black?
正确答案
解析
本题属于理解题，根据以上解题思路可知，北京人一年的花费，再除以12个月，可算出为664.3元，所以答案选A。
考查方向
解题思路
事实细节题。根据文章第一段“Beijingers（北京人） lost as much as 7,972 Yuan on average to traffic jams last year, the highest in the country, said a report.”可知，北京人一年花在交通堵塞的费用是7，972元
易错点
容易粗心将一年的数值选上。
正确答案
解析
本题属于理解题，根据以上解题思路，从句中找关键词，poor traffic conditions,所以答案选D。
考查方向
解题思路
事实细节题。根据文章第五段“Research based on data collected on Didi Kuaidi's online platform showed that not only those in mega cities suffered from poor traffic conditions.”可知，北京糟糕的交通条件导致交通堵塞。
易错点
。
正确答案
解析
本题属于理解题，根据以上解题思路可知，mega是大的意思，所以答案选A。
考查方向
解题思路
事实细节题。根据文章第三段“Whit
易错点
平时积累少，对常识不理解，容易选成develop。
正确答案
解析
本题属于理解题，根据以上解题思路可知，下文写的是政府对交通堵塞所做的努力，所以上文要能引出下文，所以答案选B。
考查方向
解题思路
事实细节题。根据文章最后一段“For instance, the Fourth Ring Road in Beijing in a morning rush hour. City authorities are working on solutions to ease the pressures on traffic in the city”，把选项中的每一项都与这段连起来读一遍看通不通。
易错点
没有联系上下文。