从Ａ、Ｂ、Ｃ、Ｄ四个选项中，选出可以填入空白处的最佳选项，并在答题卡将该项涂黑。
6. We are now living in ______ “Information Age”, ______ time of new discoveries and great changes.
A. the; a B. an; the C. 不填; a D. the; the
7. — I have heard you are going to change your job. Are you serious?
—_______. I will quit my job.
A. Yes, I’ve made up my mind B. No, I was joking
C. Yes, I do hope so D. No, I’m not
8．A successful life is a life challenges are met and difficulties overcome.
A．which B．where C．that D．what
