单选题
1分
To conserve energy, estate developers are encouraged to build houses that can 【retain】 heat in winte...
To conserve energy, estate developers are encouraged to build houses that can 【retain】 heat in winter.
参考答案: B
参考解析: 译文为:为了节省能源,房地产商被鼓励建造能在冬季保暖的房屋。retain保留,保持。attain实现;keep保持;release释放;generate产生。