治疗食管癌首选的方法是( )。
A.手术治疗 B.化疗 C.放疗D.中医中药 E.免疫治疗
参考答案:A
解析:知识点:食管癌的治疗原则
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.
钢卷尺在使用中,产生误差的主要原因不包括()。
A、温度变化的误差
B、拉力误差
C、钢尺未水平放置的误差
D、风力误差