This firm has found that the number of staff _____ is needed for quality control

游客2024-09-03 30

问题 This firm has found that the number of staff _____ is needed for quality control can be substantially reduced since it uses computers.

选项 A、whose
B、as
C、what
D、that

答案 D

解析考查关系词的使用。本题中staff后的定语从句中缺少主语，而that既可连接定语从句，义可充当从句中的主语，用来指人，符合题意。

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