单项选择题

A．in
B．under
C．over
D．beyond
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单项选择题
Why is insulation required in new houses
A．To limit discussion on heating bills.
B．To determine temperature in homes.
C．To prevent heat loss.
D．To convert homes to electric heat.
单项选择题
Why do successful language learners find it easy to practice using the language regularly7
A．They find it easy to communicate.
B．They look for exact information.
C．They want to learn from the people who speak the language.
D．They want to teach the language to others.
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