问题
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Our whole physical universe, when______to the simplest terms, is made up of two things, en
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Not until the First World War ______ to improve t
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Not until the day before yesterday______to give a
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Latecomers will not be ______ until the interval.
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Not until the 18th century ______(人类才意识到) that the brain controlled our thinking.
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______________ with the size of the whole earth the highest mountain does not seem high
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