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【单选题】
The secretary worked late into the night.She was preparing a long speech for the manager.(改写成现在分词作状语)A.
The secretary worked late into the night,preparing a long speech for the manager.
B.
The secretary working late into the night,She was preparing a long speech for the manager.
C.
The secretary worked late into the night,she preparing a long speech for the manager.
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反馈参考答案：
举一反三
【单选题】下列关于循环结构的说法正确的是( )。
A.
当型循环结构是“先执行，后判断”
B.
直到型循环结构是“先判断，后执行”
C.
当型循环结构是当条件满足时执行循环
D.
当型循环至少执行一次循环体
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