A. A plan to reduce harmful gases from offices B. A "green" office safer for people C. The decoration of the green office D. The

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问题 A. A plan to reduce harmful gases from offices
B. A "green" office safer for people
C. The decoration of the green office
D. The materials of the green office
E. More things to do for a better work environment   
F. The cost of the green office
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选项

答案B

解析 第三段第一句。
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