Some people believe that a car is more and more popular in the modem world£¬because it becomes increasingly important£®If we drive a car instead of taking a bus to go to work or school£¬it will certainly save lots of time£®And at weekends we tail also drive to many interesting places with our families£®However, cars have caused much environmental pollution£®They often sent off much waste air and make terrible noise£®As we Call see£¬there are also many traffic accidents caused by cars£®And especially with larger and larger numbers of cars£¬the road has become too crowed£®As a result, the number of cars should be cut down to protect me environment£®