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Rebecca949 发表于 2015-3-30 09:57

四级练习2015.03.29

[audio]http://sound.yywz123.com/tingbbs/cet4/cet420150329.mp3[/audio]



(1)__________________________________________.If everyone drives such cars in the future,there will be less pollution in the air.There will also be more space for parking cars in cities,and the streets will be less crowded.Three such cars can fit in the space that is now needed for one car of the usual size.(2)________________________.Driving will be safer, too,as these little cars can go only 65 kilometers per hour.
The little cars of the future will be fine for getting around the city,but they will not be useful for long trips.Little cars which are powered by gasoline will go 450 kilometersbefore needing to stop for more gasoline.If big cars are still used along with the small ones,two sets of roads will be needed in the future.(3)____________________________,fast cars and other roads will be needed for the slower, small ones.





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