单项选择题

In conclusion, walking is a cheap, safe, enjoyable and () available form of exercise.

A. recklessly
B. readily
C. potentially
D. amenably

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There is no doubt that the()of these goods to the others is easy to see.

A. prestige
B. superiority
C. priority
D. publicity
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In order to survive now and () in the future, all the working staff must constantly create new ideas for every aspect of your business.

A. maximize
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C. measures
D. remain
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