The smog’s(烟雾) most threatening aspect is its high concentration(浓度) of PM 2.5—particulate matter that is small enough to breathe deep into the lungs and enter the bloodstream,causing breathing infections,lung cancer and possibly damaging children’s development.The WHO has estimated that outdoor air pollution accounts for two million deaths per year,65% of them in Asia.
【语篇导读】本文主要以北京为例谈论了雾霾天气对人体的不良影响。
47Which conclusion can we draw from the first paragraph?
A.Hu Li is living in Beijing.
B.Hu Li traveled to Tianjin for business.
C.The haze is harmful to people.
D.The pollution is the worst in Beijing’s history.
答案:C
解析:推理判断题。根据第二句中的“...she held her breath...”以及“It gave her husband a cough and left her seven-year-old daughter housebound(足不出户).”可知答案。
48.The haze affected people mainly in .
A.the way they traveled
B.the opinion about national air
C.the way they lived their life
D.the life style of internet
答案:B
解析:细节理解题。由第二段首句“The extended heavy pollution...has largely changed the way that Chinese think about the country’s air.”可知答案。
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