1.I have come across the word_times,but I can't remember it

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1.I have come across the word_times,but I can't remember it A.score B.a score of C.scores of D.scores为什么不选B 正确的是哪个?2._he has tried to pass the examination is in vain A.all the means B.every mean C.every means D.all the mean 不难吧再分析下啦

1 score: 20 旧用法; 例如 a score of people; three score and ten
C. scores of= a lot of
a score of=twenty （旧用法）; 很多（不如scores of常见）
eg I have been there scores of times.
Scores of people attended the special performance.
I've escaped death a score of times by a hair's breadth.
2 C every means
"means"单数复数同,方式,后面谓语是is in vain,当然用单数主语,he has tried (evry means) to pass the examination是定语

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