2. 外语
  3. Under a new law, universities must ______ smoke-free policies on their campuses.

Under a new law, universities must ______ smoke-free policies on their campuses.

admin2011-04-26  10
问题 Under a new law, universities must ______ smoke-free policies on their campuses.
选项 A、endow
B、endeavor
C、enact
D、endorse
答案C
解析
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