Ⅰ. 词义匹配 1. lightning　 A. one of the light soft things that cover a bird’s body 2. feather B. a powerful flash of light in the sky caused by electricity and usually followed by thunder 3. wave C. a long box in which a dead person is buried 4. coffin D. a line of water that rises up on the surface of an ocean, a lake, or a river