第一题Many of the world’s pollution problems have been caused b

第一题Many of the world’s pollution problems have been caused b many of the world's pollution problems have been caused by t 大学英语阅读理解第一题Many of the world’s pollution problems have been To many cars have caused a lot of serious problems in our li Experts have been warning ---of the risks caused by passive There____so many parks around the world now.A.have been B,ha problems relating to people's livelihood have been the focus 英语翻译The problem of “white pollution” caused by used plastic Many of the world's countries and regions have production of much has/many have been done to stop the pollution.请说明选A原因 describe some of the problems caused by overcrowding Experts have been warning ---of the helth risks caused by pa