对这位知名的外籍教授的到来表示欢迎 2．表达希望该教授就某个话题在学校进行讲座的希望和对讲座的一些基本设想 3．希望教授可以接受邀请，并对教授的宝贵时间表示感谢

A．Mark has been transferred to another job because of his poor work.
B．Mark prefers credit to his own interest.
C．Mark has pleasant personality and plays a key role in the office.
D．Mark will have a very promising future career.

A．as soon as we encounter certain change, we can do nothing
B．hope for the bright future can get our mind off the present change
C．he is so sad about Mark's leaving that he felt very uneasy
D．whatever the change is, we need to get ourselves adapted and move on