【单选题】【消耗次数：1】
水准器的分划值俞小，其灵敏度俞高，用来整平仪器的精度也俞高。
①
正确
②
错误
参考答案：
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sweeping
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the
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Professor Smith, together with twenty of his students, [] coming to our school in May for a short visit.
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is
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are
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One of the best ways [] can protect the environment is sustainable development.
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which
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in which
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how
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that
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①
even if
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whether
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no matter
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however
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It
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As
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As
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Since
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If
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While
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or
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and
③
but
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so