单项选择题
How can a nonscientist explain an abstract theory with such ______
单项选择题 It's self-evident that no one would have time to know everything going on in the world.
单项选择题 It is no good ______ the cold fish. He always keeps a deaf ear to matters other than his.
单项选择题 The energy ______ by the chain reaction is transformed into heat.
