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047. 聽下面材料，回答第(1) (2) (3) 題。
(1) Why do people build underground houses?
A. To save time and energy.
B. To save land and money.
C. To save land and energy.
(2) In what country have underground hosues been used for a long time?
A. Canada.
B. Japan.
C. China.
(3) What was the temperature inside Rinker's house when it was -22℃ outside?
A. 22℃.
B. 16℃.
C. -16℃.
