2. 外语
  3. Before you think about asking for a promotion, make sure that either a position opening exists ______a new position is needed to

Before you think about asking for a promotion, make sure that either a position opening exists ______a new position is needed to

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问题 Before you think about asking for a promotion, make sure that either a position opening exists ______a new position is needed to be created.
选项 A、and
B、nor
C、or
D、but
答案C
解析 either…or…为固定搭配，表示“或者…或者”。前面出现了either，故选C。
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