2. 外语
  3. In American universities, classes are often arranged in more flexible______and many jobs on campus are reserved for students.

In American universities, classes are often arranged in more flexible______and many jobs on campus are reserved for students.

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问题 In American universities, classes are often arranged in more flexible______and many jobs on campus are reserved for students.
选项 A、scales
B、patterns
C、grades
D、ranks
答案B
解析 名词词义辨析。scales“规模，尺度”；patterns“模式，方式”；grades“等级，年级”；ranks“等级，阶层”。句中的flexible能与patterns搭配且符合逻辑。故答案为B。
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