Protecting environment What springs to our attention is a fresh scene:three public transport options is listed.The eye-catching slogan reads:Go green travel,and enjoy low-carbon life.The purpose of the painting is to show that the extensive attention has to be drawn to the environmental contamination leaded by private cars.So grave does environmental deteriorating prove that it seems high time to shed light on it. The majority of folks would cling to the perspective that the issue has its deep roots as follows. First and foremost,with the rapid advance of economy,citizens become so rich that the amount of private cars has a fierce mounting trend.Secondly, not only does driving own cars to daily commuting or go grocery shopping improve a multitude of convenience for car owners,but also can fail to expose them to wind and rain.Lastly,it is lacking awareness of protecting environment that also contributes indirectly to the phenomenon. Beyond any shadow of the doubt,the measures can be taken from two sides.From the perspective of related authorities,they can limit the purchasing amount of cars by fair and reasonable policy.From the perspective of citizens, we are supposed to select green travel options,such as bike,subway and bus.Only with the joint efforts from both sides will the cancer of environmental contamination be rooted out.