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【单选题】
下列各类氨基酸中不含必需氨基酸的是A.
酸性氨基酸
B.
含硫氨基酸
C.
支链氨基酸
D.
芳香族氨基酸
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举一反三
【单选题】A writer writes a story when he has_____ .
A.
known how a story is going to end
B.
had some vague idea about an original story in his mind
C.
had the story as a whole in his mind
D.
understood the development of the story clearly
【单选题】A writer writes a story when he has ________.
A.
(a) had the story as a whole in his mind
B.
(b) understood the development of the story clearly
C.
(c) had some vague idea about an original story in his mind
D.
(d) known how a story is going to end
【单选题】A writer writes a story when he has_____.
A.
had the story as a whole in his mind
B.
understood the development of the story clearly
C.
had some vague idea about an original story in his mind
D.
known how a story is going to end
【单选题】When a writer writes a narrative essay, his or her purpose is to that shows the meaning and significance of the events.
A.
explain a theory
B.
tell a story
C.
argue for a view
D.
summarize your experience
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