height可不可数,例句the students take their (height) every year .另外

height既可以是可数名词,也可以是不可数名词.

如：
The height of the statue is ten feet. 这雕像高达10英尺.
The plane flew at a height of 6000 feet. 飞机在6000英尺的高空飞行.
He is just five feet in height. 他身高恰好5英尺.
This hotel is on the heights. 这座旅馆坐落在山丘上/高处.
The singer was then at the height of her popularity. 当时那歌手正是最走红的时候.
再问： 麻烦告诉我一下例句的答案。
再答： 个人认为答案是：height