Several international events in the early 1990s seem likely to ________, or at least weaken the trends that emerged in the 1980s.
句意：上世纪90年代初的几次国际事件似乎有可能逆转或至少削弱上世纪80年代出现的趋势。 reverse使……倒转，使……反向。revolt反叛。revolve旋转。revive复兴。故选C。