What could be best title of this passage?
A.Carbon emission, a long way to go
B.Shipborne carbon emission, is it the most serious threat to environment
C.The necessity of cutting down the carbon emissions
D.Watching out the carbon emissions
正确答案是A
What could be best title of this passage?
A.Carbon emission, a long way to go
B.Shipborne carbon emission, is it the most serious threat to environment
C.The necessity of cutting down the carbon emissions
D.Watching out the carbon emissions
正确答案是A