衡量某种疾病对人类生命威胁程度的指标是A．发病率 B．患病率

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问题单项选择题

衡量某种疾病对人类生命威胁程度的指标是

A．发病率

B．患病率

C．病死率

D．治愈率

E．死亡率

答案

参考答案：C

填空题

用所给词的适当形式填空

1. The boy hurried forward ____ ( see) the world-famous oil painting because he had been looking

forward to _____ (see)it for a long time.

2. The day I had been looking forward to ____ (come).

3. I used to ____ (get) up late, but now I' m used to ____ (get) up early.

判断题

直肠癌其下缘距肛门10cm以上可行Dixon手术。