用词，短语或句子补全对话。

Jack: Good morning, doctor.

Doctor: 1. _______. 2. _______?

Jack: I'm not feeling well.  I don't want to eat anything.

Doctor: 3. _______?

Jack: No, I don't have a fever.

Doctor: 4. _______  ?

Jack: Yes, I sleep very wcll at night.

Doctor:  Let me examine (检查)  you.  5. _______,  you are too tired. You should rest a lot.

Jack: 6. _______, I will.

Doctor: Jack, follow my advice, and you will get well soon.

Jack: 7. _______                      .

Doctor: You're welcome.

在预防流行性出血热的措施中，下列哪项最重要（）

A."三早"预防

B.预防接种

C.灭螨防螨

D.灭鼠防鼠

E.疫情监测