【单选题】某人伤残3处,分别评定为六级、七级和九级,那么伤残等级最高的是( )。
【单选题】A small town on the border between England and Wales ______.
A.
does not deal in anything but books
C.
deals in anything but books
D.
does not deal in anything but sheep
【单选题】Thus ______ between England and France which was to last for 100 years.
【单选题】某人伤残 3 处,分别评定为六级、七级和九级,那么伤残等级最高的是( )。
【判断题】烷烃的通式是CnH2n+2 ,烯烃的通式是CnH2n。
【判断题】分子式符合通式CnH2n的是烯烃。( )