回复：pjiang 老师，看看我的这个REFER该如何回答？

来源: 于 2007-09-05 08:11:24 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

You found yourself was more interested in Biology, so you made the change.

If you're back is Physics now, you can explain that you dropped Biology because it's not easy as you thought to get in a new field.