A good reader is a reader who______.A．concentrates on the wonderful part of the articleB．a

A good reader is a reader who______.

A．concentrates on the wonderful part of the article

B．always reads slowly and carefully

C．changes his speed according to the kind of text

D．changes his speed according to the interesting of the text

请帮忙给出正确答案和分析，谢谢！