单项选择题

I got a new battery for my recorder only last week, but it seems to have ______ already.

A．worn out
B．run down
C．knocked off
D．gone off
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单项选择题
The plays of Eugene O'Neill, characterized by their unsettling questions and tumultuous struggles with fate, transformed the American theater.
A．thrilling
B．troubling
C．refreshing
D．frightening
单项选择题
When solid changes to liquid, it ______ heat from all substances near it and this reduces the temperature surrounding it.
A．takes in
B．takes on
C．takes off
D．takes down
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