2. 外语
  3. One of the main tasks of statisticians is to ______update databases so that accurate reports can be published as needed.

One of the main tasks of statisticians is to ______update databases so that accurate reports can be published as needed.

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问题 One of the main tasks of statisticians is to ______update databases so that accurate reports can be published as needed.
选项 A、regular
B、regularly
C、regularity
D、most regular
答案B
解析 横线处应填入修饰动词update的副词，故选(B)regularly(定期地)。副词插在to和动词原形之间的结构叫做“分离不定式”。
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