Those successful deaf dancers think that dancing is an activity __________ sight matters more than hearing.

A．when

B．whose

C．which

D．where

属于业主责任导致了部分工作内容的施工延误，而该项工作并不位于工程师批准承包人施工进度计划的关键线路上，则一定不批准承包人顺延合同工期。