The prisoner was questioned for three hours but he remained ______ throughout his trial.
【正确答案】 C
【答案解析】那个犯人被盘问了三个小时，但在整个审讯当中仍然一言不发。A blind“瞎的” B．deaf“聋的”C．dumb“哑的，沉默不语的” D．inarticulate“口齿不清的”