At a time when Internet use is expanding rapidly, social critics say the technology could______the fragmentation of U. S. society or help to fuse it, depending on how it is used.

单项选择题It was purely through a gift for nuance that Kempton noticed, while reviewing the work of Whittaker Chambers, something______authentic beneath the______and self-pity.

单项选择题Mistier became the agency’s______, and he continued as such not because of his large number of shares in the company but because, beyond______, he was, by a long shot, better and tougher than anyone else there.