单项选择题

A new system of quality control was brought in to overcome the defects in the firm’s products.()

A. invested
B. introduced
C. installed
D. insisted

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单项选择题
We derive information mainly from the Internet.()

A. deprive
B. obtain
C. descend
D. trace
单项选择题
He could not tolerate the extremes of heat in the desert.()

A. bear
B. hate
C. like
D. criticize
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