大学英语四级模拟题四.pdf

文档介绍：3. Scientists have not yet determined .
大学英语四级模拟题四
e and mark the corresponding letter on the Answer Sheet with a single line through the centre.
C. most people do not know that pollution is a serious problem
D. we should learn all the answers before we begin to control pollution
Passage One
Air pollution can spread from city to city. It even spreads from one country to another. Some northern
Passage Two
European countries have had “black snow” from pollutants that have traveled through the air from other
Stiletto heels could be banned from the workplace because of health and safety reasons, according to
countries and have fallen with the snow. So air pollution is really a global problem.
British Trade Union bosses. The Trade Union Congress, predominantly male, has proposed a motion arguing
Air pollution can kill babies, older people, and those who have respi