Which of the following sentence can be identified as thesis in the text?（）

Which of the following sentence can be identified as thesis in the text?（）

A.Eating and reading are different completely, but they are quite similar in some ways.by nature.

B.To keep ourselves alive, we need eating.

C.To enrich our mind, we need reading.

D.When we eat, we should regard eating as a pleasant enjoyment but not a passive acceptance for the sake of health.

正确答案是A