单选题 According to the first paragraph, pictures of animals were painted on the walls of caves because ______.

A、 the pictures were thought to be helpful
B、 the painters wanted to tell stories in pictures
C、 the painters wanted to paint their hunted animals
D、 both A and B

【正确答案】 D

【答案解析】见第一段"Perhaps the painters thought that their pictures would help them to cateh these animals. Or perhaps human beings have always wanted to tell stories in pictures."