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閱讀理解
Traffic is a big problem in many cities around the world．Traffic is especially bad during rush hours-the time when people go to work or school and the time when they go home．Many people take buses,subways,or trains to work,but many other people drive their cars．As a result,the streets are very busy,and the traffic is very bad．Many cities are trying to solve their traffic problems．Some cities are building more roads．Other cities are expanding their bus and subway systems．Many cities are trying to reduce the number of cars on their roads．Some highways have carpool lanes-special lanes for cars with two,three,or more people．In some cities,people．drive their cars only on certain days of the week．For example,in Athens,people with license plate numbers ending in 0 through 4 drive on some days,and people with numbers ending in 5 through 9 drive on other days．
Every day around the world,more and more people drive to and from work in more and more cars．As a result,traffic is a global problem．
根據(jù)短文回答問題。
Please write down the solutions(解決方法) to traffic problems according to the passage．
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