单项选择题

What makes many people believe that our future energy demands will easily be met

A．The progress in developing alternative energy.
B．The abundant deposit.
C．The development of technology.
D．All of the above.
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单项选择题
The poetic style Walt Whitman devised is now called ______.
A．free verse
B．sonnet
C．blank verse
D．ballad
单项选择题
The word orator originally meant speaker; but now it signifies the person who makes speech. This is an example of ______.
A．narrowing of meaning
B．widening of meaning
C．meaning shift
D．loss of meaning
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