Firms that use computers have found that the number of staff______ is neeced for quality c
正确答案
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Firms that use computers have found that the number of staff______ is neeced for quality control can be substantially reduced.
A.whose
B.as
C.what
D.that
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更新中~-
正确答案:D
解析:此句中,found后的that:引导的是宾语从句,从句中的“is needed for quality control”解释说明了“staff”,所以应为同位语从句,而引导词只能是that。故答案为D。
