2. 外语
  3. The ______ of accidents on that road gives the doctors a lot of work.

The ______ of accidents on that road gives the doctors a lot of work.

admin2017-04-12  52
问题 The ______ of accidents on that road gives the doctors a lot of work.
选项 A、figure
B、number
C、occurrence
D、frequency
答案D
解析 frequency n．次数，频繁；频率，出现率。
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