单项选择题

Many houses in the north are warm in winter because they are ______ so that the heat is not lost.

A．isolated
B．insulated
C．imparted
D．integrated
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单项选择题
No one was more ______ than Neil in supporting the proposal.
A．dubious
B．spacious
C．zealous
D．curious
单项选择题
Although the majority of offenders are men, a small ______ —about 5 percent—are women.
A．proposition
B．advocacy
C．consumption
D．proportion
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