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【单选题】
Excel2010工作薄的最小组成单位是( )A.
工作表
B.
单元格
C.
字符
D.
标签
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A.
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A.
I need your advice on it.
B.
I advise you to put more hands in this project.
C.
Thanks for your suggestions.
【单选题】When you rewrite the paragraph, I advise you to leave out is thought unnecessary or misleading.
A.
where
B.
which
C.
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【单选题】When you rewrite the paragraph, I advise you to leave out ____ is thought unnecessary or misleading. [ ]
A.
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【简答题】等差数列{a n }中，，前n项和为S n ，S 2 =4且S 4 =12，等比数列{b n }的公比为8，且b 3 =． （Ⅰ）求a n 与b n ； （Ⅱ）求 1 S 1 + 1 S 2 +…+ 1 S n ．
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