Which of the following words is made up of bound morphemes only?Ahappi

Which of the following words is made up of bound morphemes only?

happiness

television

ecology

teacher

答案及解析：本题考查黏着词素。题目问四个选项中哪个单词只是由黏着词素（bound morphemes）构成的。C选项，ecology 是由 eco-和-logy两个黏着词素组成，因为它们都不能单独使用。综上，C选项正确。A选项，happiness 由 happy 和-ness 构成，happy 为自由词素，故排除。B选项，television 由 tele-和 vision 两部分组成，vision为自由词素，故排除。D选项，teacher 由 teach 和-er 后缀，teach为自由词素，故排除。故正确答案为C。