英语演讲 雾霾.ppt

文档介绍：BeiJing
Bo hai
Yellow Sea
Smog
By Wang
Look!
Shen Yang
Look!
Bei Jing
It’s so terrible!
Look!
Shang Hai
Why these cities are gray ?
Causes
atmosphere. The air resting near the ground make the particular matter floating in the specific area.
2. Automobile exhaust.
(汽车尾气)
pollution.
What is the influence?
Influence
particulate-laden(满含颗粒的) air may be hardening your arteries(动脉) faster than normal.
2. The air with bacteria and viruses(细菌和病毒) is easy to cause the spread diseases.
health
Influence
 have been told to  minimise their exposure to the smog, and to avoid outdoor  activities, putting many of the city's attractions off-limits.
society
haze will reduce the vision. The worse is that the traffic will be much busier and the possible of accident will raise up.