What is the main idea of this passage?( )
A.We must help to fight pollution. B.There had no modern machines hundreds of years ago. C.Many countries are making rules to fight pollution. D.Noise pollution makes us become angry more easily.正确答案A
What is the main idea of this passage?( )
A.We must help to fight pollution. B.There had no modern machines hundreds of years ago. C.Many countries are making rules to fight pollution. D.Noise pollution makes us become angry more easily.正确答案A