求英语高手修改作文.请大神们认真修改.灌水的请勿扰.

求英语高手修改作文.请大神们认真修改.灌水的请勿扰.
Along with the development of people’s living standard,the competition between people and people is getting intense,at the same time; working under a high pressure condition has caused people to choose smoking as a way to reduce their pressure or other purposes.However Passive smoking is linked with cancer,heart disease,respiratory illness and is the leading source of indoor air pollution.
In Australia,Tobacco causes more ill health and premature death than any other drug used in Australia.If cigarette smokers commence smoking as teenagers and do not quit,then eventually about half of them will be killed by tobacco.
In South Australia cigarette smoking during that year
caused around 1130 deaths.This means that each week around 21 South Australians die from diseases caused by smoking tobacco,compared to around 2-3 people per week killed in road accidents in recent years.Besides according to the research,male smokers have decreasing trend since 1945,until 2007 female smokers are almost equal to male smokers in recent years.
We investigated the relationship between economic principle and tobacco use in Australia and explain how demand and supply principle related to cigarette.