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单项选择题

A．To limit discussion on heating bills.B．To prevent hea……


Questions 14-16 are based on the following passage. You now have 15 seconds to read questions 14-16.
Why is insulation required in new houses



A．To limit discussion on heating bills.
B．To prevent heat loss.
C．To determine temperature in homes.
D．To convert homes to electric heat.
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