______ from endless homework on weekends, the students now find their own activities, such
A. Freed
B. Freeing
C. To free
D. Having freed
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建设工程设计阶段进度控制的主要任务是()。
A. 出图控制
B. 工期优化
C. 费用优化
D. 方案优选
设备开箱检查时,除监理工程师外,()单位应派代表参加。
A. 质监和建设
B. 质监、建设和设计
C. 建设和设计
D. 建设和施工
A．whoB．in whichC．whichD．by which
A. who
B. in which
C. which
D. by which
Although he argues against zoos, the author would still agree that ______.
A. zoos have to keep animals in small cages
B. most animals in zoos are endangered species
C. some endangered animals are reproduced in zoos
D. it's acceptable to keep animals away from their habitats
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