什么是宽带业务？
参考答案：宽带上网业务是电信公司为用户提供的高速访问互联网的接入业务，用户可以通过ADSL或光纤等方式接入宽带网，实现高速上网冲浪。
I don't study as _________ as Amy and always make mistakes in my homework.[ ]
A. careful
B. carefully
C. more careful
D. more carefully
如何评价约翰•克利斯朵夫的个人奋斗？
