知识问答
最佳答案：Air pollution is the human introduction into the atmosphere of chemicals, partic
最佳答案：In the past few decades,our Earth has changed a lot,but to the bad direction.Amo
最佳答案：nowadays,the phenomonon of environment pollution is becomming more and more comm
最佳答案：空气污染(Air Pollution)We all know that clean air is important to good health. Where
最佳答案：要多少字？Like Earth, other planets have sunlight, but the Earth is the only planet w
最佳答案：There are many ways of traveling, People may travel by plane if they want to tra
最佳答案：In recent years our life is becoming better and better.But our environment is be
最佳答案：AirAir is all around us.It's around us as we walk and play.From the time we were
最佳答案：Henry was worried.This was his first time to go travelling by air.He did not kno
最佳答案：将原句里的purchase in 改成purchased from,that改成because,when the machine operated改成when
最佳答案：Electricity is very important nowadays,it give light to every family and make ma
最佳答案：Sunshine town is a new and modern tour paradise.The place is a eco-balanced park
最佳答案：Air PollutionThe United States produces more air pollutants than any other count
最佳答案：my roomThis is my room.There is an air-conditioner next the window,there is an e
最佳答案：Mordern time,human has more and more convenient ways to "deliver" yourself from
最佳答案：1.Air pollution is one of the major problems of the modern world.A great deal of
最佳答案：In order to seek for increasing economic development of human society,more and m
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