《环境保护》(《Environmental Protection》)《安全与环境学报》Journal of Safety and Environment 生物医学与环境科学(英文版) Biomedical and Environmental Sciences 北华大学学报(自然科学版) Journal of Beihua Univer
1. Present situation 2. Suggested measures to be taken 3. Future prospect Write an essay of about 200 words within 40 minutes on the ANSWER SHEET.尊敬的先生/女士: