问题
选择题
Pollution is the major ________ of the global warming.[ ]
A．cause
B．reason
C．excuse
D．event
答案
答案：A
搜题请搜索小程序“爱下问搜题”
Pollution is the major ________ of the global warming.[ ]
A．cause
B．reason
C．excuse
D．event
答案：A