Pronouns, prepositions, conjunctions articles are ___________ . A: open class words B: closed class word C: oth open class words and closed class word D: neither open class words nor closed class word

The classification of closed class words and open class words is usually determined by their gramatical functions.

Pronouns, prepositions, conjunctions and articles are all open class items. （ ）

”Although“ is an open-class word.

MOOC的英文全称是： A: Massive Open Online Course B: Max Open Online Course C: Massive Open Offline Course D: Max Open Offline Class

Words like pronouns, prepositions, conjunctions, articles are ______ items. （ ） A: open-class B: closed-class C: neither open-class nor closed-class

中国大学MOOC: ”Although“ is an open-class word.

Nouns, verbs and adjectives can be classified as A: functuional words. B: B. structural words. C: open class words. D: D. closed class words.

在Python中使用（）函数打开文件 A: use B: list C: class D: open

Function<br/>words are open class words because new words are constantly added to<br/>these classes.(<br/>)