Only to use this reading room. Students have another room on the second floor. A. are the

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A. are the teachers allowed
B. are allowed the teachers
(答案→)C. the teachers are allowed
D. the teachers allowed
解析：考查倒装句的特例：这里的only修饰主语teachers，不是用来修饰状语的，所以不用倒装。句意：只有老师允许进入这个阅览室，学生在第二层有另外的房间。