The man showed us such a heavy stone no one could lift it.A. thatB. asC. whichD. and

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(答案→)A. that
B. as
C. which
D. and
解析：句意：那人给我们展示了一块没人能搬起来的大石头。as引导的定语从句中，as要么作主语，要么作宾语，而该句中lift后有宾语it，所以不能选择as，该题属于such...that状语从句，that只作连词，不作成分。