单项选择题

Which of the following may replace the phrase "trawl through"(Line4, Para. 2)

A．Keep track of
B．Sift through
C．Store in
D．Sap into
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单项选择题
From the passage we may well understand that the author ______.
A．appeals relentlessly to the law court for justice
B．finds personal morality sometimes questionable
C．knows much about immoral dealings of American businesses
D．regards profit-making as a business's primary goal
单项选择题
The public attitude towards immoral business decisions is generally ______.
A．tolerant
B．indignant
C．indifferent
D．supportive
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