问题
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It has long been known that total sleep ______ is 100 percent fatal to rats, yet, upon exa
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Which of the following has been proven both practically and theoretically?A.Depression has
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Cuts in funding have meant that equipment has been kept in service long after it______ hav
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It has been rather costly to install the machinery, but it should______ in the long run.A.
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How long has Bryant been wearing No.8?A.Since he
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How long has Bryant been wearing NO.8?A.Since he
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