单项选择题

In almost all chemical-process plants, heat is ______ by burning of fossil fuels-coal, oil, or natural gas.

A．transformed
B．conducted
C．transferred
D．generated
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单项选择题
Your advice would be ______ valuable to him, who is at present at his wit's end.
A．exceedingly
B．excessively
C．extensively
D．exclusively
单项选择题
If a person talks about his weaknesses, the listener is expected to say something in the way of ______.
A．assurance
B．encouragement
C．persuasion
D．confirmation
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