(单选题)

What do we learn about Betty's Brain?

A.It is a character in a popular animation.

B.It is a teaching tool under development.

C.It is a cutting-edge app in digital games.

D.It is a tutor for computer science students.

参考答案：B

参考解析：

推理判断题。根据第四段第二句“who has been “taught” about environmental science by hundreds of middle school students.”可知，她被数百名中学生“传授”了环境科学知识。A选项指的是这是一个著名动画片中的人物，排除。B项，这是一个正在发展中的教学工具；C项指一个最前沿的数码游戏，排除；D项指给电脑科学的学生们提供的补习老师，排除。B项符合题意。故选B。

知识点：阅读理解四选一英语专业基础知识阅读理解教师招聘-小学英语