单项选择题


Questions 11-13 are based on the following passage. You now have 15 seconds to read questions 11-13.
How many solar heat panels do three or four bedroom homes usually need

A．Three or four.
B．Five or six.
C．Seven or eight.
D．Twelve or more.
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单项选择题
22（）

A．kinds
B．species
C．sorts
D．types
单项选择题
What is the purpose of building new houses facing north or south
A．To avoid direct sunlight.
B．To limit space used.
C．To keep out the cold.
D．To conform to other houses.
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