单项选择题

A．It will stop automatically.
B．It will move on at the same speed.
C．It will gradually slow down.
D．It will keep a safe distance from the other trains.
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单项选择题
A．He hasn’t cleaned his room since Linda visited him.B．Linda is the only person who ever comes to see him.C．He’s been too busy to clean his room.D．Cleaning is the last thing he wants to do.
A．He hasn’t cleaned his room since Linda visited him.
B．Linda is the only person who ever comes to see him.
C．He’s been too busy to clean his room.
D．Cleaning is the last thing he wants to do.
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