Global warming caused by human activities?a major concern fo

Global warming caused by human activities?a major concern fo As global warming continues to be major concern for the futu a global warming是什么意思? Global warming is a concern 后面是不是应该加一个question a major concern 造句 In recent years( )global warming is becoming( )concern of pe 英语翻译Global warming threatens to hold back human progress,and global warming global warming的作文 global warming是什么意思啊 what is global warming? 什么是global warming