颈段食管癌长度约为()。
A.3cm
B.4cm
C.5cm
D.6cm
E.8cm
参考答案:C
身体被化学品污染后,应()。
A.立即用大量清水冲洗患处
B.立即用布抹干
C.尽快完成工作后,就医治疗
D.用碱清洁,再用水冲洗
Questions 16 to 20 are based on the following talk.
A. Insomnia.B. Narcolepsy. C. Sleep apnea. D. Self-hypnosis.