【判断题】【消耗次数：1】
Formal English is much more difficult to attain since it is subject to more restraints and requirements.
①
正确
②
错误
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“Purchase”and “buy”are not synonyms because “purchase”is more formal than “buy”.
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错误
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It is often more difficult to find trained men than ____ for scientific research.
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getting financial support
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to getting financial support
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to get financial support
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in getting financial support
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The more peopleyou know, ___________knowledgeyouget.
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随机题目
【单选题】
在单级放大电路的三种接法中，它们相互比较起来正确的说法是：（ ）。
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共发射极电路的AV最大、RI最小、RO最小
②
共集电极电路的AV最小、RI最大、RO最小
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