鉴别物质的方法错误的是( )
A:用酚酞鉴别食盐水和稀醋酸
B:用水鉴别生石灰和石灰石
C:用燃着的木条鉴别空气和二氧化碳
D:用氯化钡溶液鉴别稀盐酸和稀硫酸
Jones won the gold medal in the _____ race in the 27th Olympic Games.