【C16】A．weekB．periodC．patternD．practice

A．maximumB．minimumC．possibleD．practical

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How long will Mr. Welsh be in training？A．1 weekB．2 weeksC．3 weeksD．4 weeks

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A．20－yearB．a 20－year periodC．20－yearsD．a 20 years

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According to the news item, the protesters have______.A．gathered for over a weekB．decided

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A．placeB．periodC．rangeD．stage

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【C10】A．spaceB．periodC．chanceD．spot

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Excel中 函数COUNTIF的必选参数有( )。A.折旧期数lifeB.期间参数periodC.区域

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