题目内容：

完成对话 从方框中选择正确选项，并将其字母序号写在对话下面的空格内。（方框内有一个选项与对话内容无关）。

A. That sounds terrible.                  B. What’s the matter?

C. I had to study for my English test.       D. Why did you go to bed so late?

E. How did you know that?               F. I’ve never heard of that.

Lucy: Jack, you look tired. 46.1.

Jack: I stayed up late last night. I only slept for about six hours.

Lucy: What? 47.2.

Jack: An old friend came over and we had a talk until late last night.

Lucy: Why didn’t you stay in bed a little longer this morning?

Jack: 48.3.

Lucy: But I’ve read a report. It says that if you don’t get enough sleep after you study, you may forget 30% of what you’ve learned.

Jack: Forget 30%? 49. 4.

Lucy: Yes. I’ve also read that eating right can help you study.

Jack: Really? 50. 5.

Lucy: Don't you think so? And some foods can help you stay well. I think the best foods are fish, eggs, rice and so on.

Jack: I see. Thanks for telling me.