根据句意及首字母提示补全单词

1. Kangkang's father is a doctor. He is very busy right now. He is e_______ the patients.

2. —Would you m_______ lending your dictionary to me?

    —Not at all. Here you are.

3. Tom, staying up late is bad for your h_______, so go to bed early next time.

4. I'm feeling t_______. I cough day and night.

5. We should try to i_______ our environment.

男性，10岁，头面部、四肢及会阴部火焰烧伤4小时，烧伤总面积50%，深Ⅱ度20%，Ⅲ度30%，烦躁不安，手足湿冷，心率160次／分，呼吸25次／分，伤后无尿。首选的紧急处理是（）

A.立即吸氧

B.迅速建立静脉输液通路

C.气管切开

D.及时使用抗生素

E.应用激素