单项选择题

Could you hold on a few minutes （）I check this with my boss

A. for
B. since
C. during
D. while

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单项选择题
What is the best title for this passage（）

A．Six Stages for Repairing Sam’s Bicycle.
B．Possible Steps of Problem-solving.
C．Necessities of Problem Analysis.
D．Importance of Analyzing a Problem
单项选择题
As used in the last sentence, the phrase in short means （）

A．in the long run
B．in detail
C．in fact
D．in a word
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