It will be necessary______all assembly line workers to have a basic understanding of statistics in quality control.

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问题 It will be necessary______all assembly line workers to have a basic understanding of statistics in quality control.

选项 A、to
B、on
C、for
D、from

答案C

解析语汇：介词1．本题考查介词的选择。2．不定式(to have)的形式主语(all assemblyline workers)前需要加介词for，因此(C)为正确选项。

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