单项选择题


Questions 23 to 25 are based on the conversation you have just heard.

A．It can not be stopped properly.
B．The brakes got loose.
C．It can not start up.
D．The engine tends to die.
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单项选择题
A．Staying long outside.B．Working overtired.C．Working with patients.D．Wearing few clothes.
A．Staying long outside.
B．Working overtired.
C．Working with patients.
D．Wearing few clothes.
单项选择题
A．It is not safe for the children.B．The children can not communicate with mothers face to face.C．The mothers may feel very tired.D．The children have no chance to use hands and legs.
A．It is not safe for the children.
B．The children can not communicate with mothers face to face.
C．The mothers may feel very tired.
D．The children have no chance to use hands and legs.
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