空格串是指由_______组成的字符串，其长度等于串中_______的个数。
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串是一种特殊的线性表，其特殊性表现在_______。
两个字符串相等的充分必要条件是_________且___________。
__________ her success in the film domain, the roles she most preferred portraying were not in movies.
A. To
B. Apart from
C. Despite
D. In spite of
What writing style does Section A belong to?
A. argumentation
B. expository writing
C. practical writing
D. narrative
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