参考答案

正确答案：D
解析：[听力原文]
M: Mr. Johns, your student Bill shows great enthusiasm for musical instruments in the exhibition.
W: That may be true. But I only wish he showed haft as much for his English lessons.
Q: What do we learn from the conversation about Bill?
通过选项可知对话可能关于Bill和英语学习以及音乐之间的关系。男士对女士说Bill对乐器表现出很高的热情。女士说她只希望Bill能对英语表现出一半热情。因此可知Bill不是很努力学习英语。故正确答案为D)。