汉世侯在蒙古国时期对保护汉地的农耕文明和儒士文化方面，起到一定的作用。
参考答案：对
In the interview, he was asked the same question_________he would like to apply for that job.
A．where
B．that
C．as
D．why
水冷壁的作用是什么？有何优点？
