While sitting by the old man, the Marine ______.
A. did not say a word
B. was lost in deep thought
C. offered words of comfort
D. smoked to keep himself awake
查看答案
Why did the Marine keep himself from smoking until the old man died?
A. He knew the rules of the hospital.
B. He wanted to show his respect for the dead.
C. He knew his father did not like smoking.
D. He gave all his thought to the dying man.
The Marine did not explain who he was when he saw the old man because _______.
A. he knew he was the only one who could help
B. he felt it useless to explain to a half-conscious man
C. he couldn’t see the patient clearly in the dim light
D. he knew the old man’s son could not arrive in time
民航安检发展过程中，金属探测仪比液体探测仪更早出现
A. 对
B. 错
从检查的方式和手段来看，国际民航安检发展经历了3个阶段。
A. 对
B. 错
微信支付 
支付宝支付