单项选择题

The author's attitude toward the future of solar energy is ______.

A．optimistic
B．pessimistic
C．uncertain
D．disappointed
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单项选择题
This passage is about______.
A．marketing of software
B．one version of the movie Close Encounters of the Third Kind
C．major computer companies
D．impact of TV commercials
单项选择题
The narrator of the following piece is a(n)______.
A．writer
B．Englishman
C．woman judge
D．lawyer
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