we are well aware of the role of modern tranportation in our live。 not too long ago， people endured great hardhip in order to make a long journey。 moving heavy good from one town to another involved hard labor。 today， we enjoy the convenience of variou kind of vehicle including hip， plane， train， and automobile， which allow u to go wherever we chooe and make our workload much lighter。
but modern tranportation， along with convenience ha brought ome problem。 with more driver on the road， there ha been an increae in traffic jam and accident。 the exhaut from automobile ha added to our air pollution， not to mention additional noie caued by truck and car on the road。
like everything ele， modern tranportation ha more than one face。 here in china， we look to our government expert to olve thee problem。 cientit are working on developing modern fuel that produce le pollutlon。 however， we can all help reduce air pollution from automobile by only driving when it i neceary and uing public tranportation when available。