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【判断题】
道岔是以其辙叉角的大小不同来分号，号数越小，辙叉角越小，机车车辆侧线通过道岔时越平稳，允许的侧线通过速度也越高A.
正确
B.
错误
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举一反三
【单选题】He couldn't help ______ of his miserable childhood when he saw the film.
A.
thinking
B.
to think
C.
think
D.
having thought
【简答题】As soon as he heard this , he couldn't help crying.
【多选题】项目采购规划编制应注意( )
A.
采购物料的质量和使用性能要符合项目的要求
B.
采购规划要明确规定采购的物料衔接问题
C.
采购规划要对整个采购过程进行协调管理
D.
采购数量应尽量多，以备项目不时之需
【单选题】____ the days he had spent with his American friends, he couldn't help_____. [ ]
A.
Keeping up; smile
B.
Staying up; smiling
C.
Looking back on; smiling
D.
Looking at; to smile
【单选题】Tom tried his best to keep awake, but the performance was so boring that he couldn't help to sleep.
A.
dropping off
B.
dropping down
C.
dropping away
D.
dropping out
【简答题】改错 1.He said that he couldn't help but to cheat his girlfri end. 2.These old people are concerning about the growth of the younger generation. 3.To have been caught a sandstorm was a terrible experien...
【简答题】He couldn't help (laugh) when he heard the joke.
【简答题】He couldn't help crying at the news.
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