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单选题
To conserve energy, estate developers are encouraged to build houses that can retain heat in winter.
A

attain

B

keep

C

release

D

generate


参考答案

参考解析
解析:
句意:为了节省能源,政府鼓励房地产商建造能在冬季保暖的房屋。retain的意思是“保留,留下,保持”。attain实现,得到。release释放;排放;发行,解脱。generate产生,引发。
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