依据课程,在卖产品之前,销售人员对自己的产品应当做到（)。
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She tried to ______ her fears to her mother.
A. understand
B. give
C. quote
D. communicate
He _______ his wife a beauty, though others found her plain.
A. counted
B. considered
C. regarded
D. reckoned
The firemen managed to _______ the fire in time.
A. prevent
B. put off
C. put out
D. light
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