2、B.illustratedC.comfinedD.concerned4.Thisriverissobigthatitisimpossibletobuilda_______underitwithoutmoderntechnology. A.canalB.tunnelC.channelD.cable5.The_______isnearlydead,soIcannotstartthecaragain. A.beanB.beamC.bakeD.battery6.Whenmakingmoderncameras,peoplebeganto_______plasticsformetal. A