【earth是不可数名词,但是stone却是可数名词,为什么stone不加s呢15.TheGreatWallwasmadenotonlyby_______,butalsothefleshandbloodof________men.A.earthandstone,millionsofB.earthsandstones,millionsC.theearthandstone】

　　earth是不可数名词,但是stone却是可数名词,为什么stone不加s呢

　　15.TheGreatWallwasmadenotonlyby_______,butalsothefleshandbloodof________men.

　　A.earthandstone,millionsofB.earthsandstones,millions

　　C.theearthandstone,millionofD.theearthsandstones,millions

　　解析：earth是不可数名词,因此删除BD,数以百万的应为millionsof.