单项选择题

Whenever work is being done, energy ______ from one form into another.

A．converts
B．converted
C．is converted
D．is being converted
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单项选择题
The statesman was evidently ______ by the journalist's questions and glared at him for a few seconds.
A．put down
B．put out
C．put across
D．put away
单项选择题
The doctor's ______ is that she'll soon be as good as new if she takes insulin and watches her diet.
A．agnosticism
B．anticipation
C．diagnosis
D．prognosis
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