2. 外语
  3. The introduction of the coal pulverizing system in Daya Bay Nuclear Power Plant vastly reduces the time it took______.

The introduction of the coal pulverizing system in Daya Bay Nuclear Power Plant vastly reduces the time it took______.

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问题 The introduction of the coal pulverizing system in Daya Bay Nuclear Power Plant vastly reduces the time it took______.
选项 A、to mill the coal
B、milling the coal
C、for milling the coal
D、while milling the coal
答案A
解析 不定式。It take(sb．)some time to do sth．表示“做某事花……时间”。
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