the children grew old they became more and more in science.A. As; interestedB. With; in

问题补充：

the children grew old, they became more and more in science.

A. As; interested

B. With; interesting

C. While; interest

D. With; interested

答案：

(答案→)A. As; interested

B. With; interesting

C. While; interest

D. With; interested

解析：句意：随着孩子们慢慢长大，他们对科学越来越感兴趣。As引导时间状语从句；be interested in固定搭配，表示对某事物感兴趣。故本题选A。