Java允许一个类可以实现( )个接口。
A. 0
B. 1
C. 2
D. 多
The author has taken just two vacation trips in the past 35 years. ( )
A. 对
B. 错
One of his main sources of enjoyment is to talk with many actor friends. ( )
A. 对
B. 错
The author feels quite natural about not being focused on material goods. ( )
A. 对
B. 错