一个人福利对他人福利产生的影响被称为外部性。
参考答案：对
Your school is __ mine.
A．three times as big as
B．three times as bigger as
C．as big as three times
D．as three times big
翻译下列句子
1. Please include me in the list.
2. He listed all the things he had to do.
3. He was angry to find his name taken off the list.
