单项选择题

"Nation” as a free root can function alone in a sentence while "diet" is a ______, which can not function alone grammatically and has to combine with other morphemes to create new words.

A．active root
B．fixed root
C．non-free root
D．bound root
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单项选择题
The short stories often with surprise endings such as The Gift of Magi and The Last Leaf” are written by ______.
A．O. Henry
B．Theodore Dreiser
C．William Faulkner
D．Jack London
单项选择题
The English poets ______, Samuel Taylor Coleridge, and Robert Southey, were known as Lake Poets because they lived in the English Lake District in Northwestern England at the beginning of the 19th century.
A．George Gordon Byron
B．John Keats
C．Percy B．Shelley
D．William Wordsworth
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