WHICH OF THE FOLLOWING IS BEST SUPPORTED BY THE PASSAGE

câu 54: - Đề thi thử THPT Quốc gia môn Tiếng Anh năm 2016 trường THPT Phạm Công Bình, Vĩnh Phúc (lần 3)
Tiếng Anh Đề thi thử THPT Quốc gia môn Tiếng Anh năm 2016 trường THPT Phạm Công Bình, Vĩnh Phúc (lần 3)
Câu 54:Which of the following is best supported by the passage?A.Scientists should be consulted in order to establish uniform limits for all air pollutants.B.Human activities have been effective in reducing air pollution.C.One of the most important steps in preserving natural lands is to better enforce air pollution laws.D.To effectively control pollution, local government should regularly review their air pollutionlaws.