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【单选题】
出站信号机是用来防护( )安全的。A.
车站
B.
区间
C.
区段
D.
分区
拍照语音搜题，微信中搜索"皮皮学"使用
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【简答题】During my last winter holiday, I went to countryside with my father to visit my grandparents. I find a change there. The first time I went there, they were living in a small house with dogs, ducks, an...
【单选题】奥苏贝尔根据学习的方式，把学习的类型分为（ ）
A.
接受学习和发现学习
B.
机械学习与有意义学习
C.
认知学习、技能学习与情感学习
D.
符号学习、概念学习与规则学习
【单选题】Last winter was extremely cold. , most people say it was the coldest winter of their lives.
A.
At last
B.
As a result
C.
In a word
D.
In fact
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