A:;取代反应
B:CH2=CH2 + Br2→CH2Br CH2Br;加成反应
C:CH3CH2OH + HCl→CH3CH2Cl+ H2O;酯化反应
D:2CH3CHO + O2→2CH3COOH;氧化反应
成语是汉语中人们熟识并广泛使用很久的词组或短句,其中蕴含丰富的趣味生物学知识。下列能说明“生物对环境有影响的”成语是( )
—It's Mid-autumn Day today. Don't forget to give my best wishes to your family.
—__________. Thank you very much.