问题
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Every year a lot of university students step out of school and enter the society for pre-s
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With the explosion of digital media in recent years, a growing number of students are
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Every valid character in a computer that uses even(71)must always have an even number of 1
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● Every valid character in a computer that uses even(66) must always havean even number of
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The number of magazines issued this year has increased to______of last year.A.twice as man
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Every year students in many countries learn English. Some of these students are childr
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