问题
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The majority of the current population in the UK are descendants of all the following trib
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What is the text mainly about?A.The defect of US monetary system.B.The causes of ever-wors
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A new system of quality control was brought in to overcome the defects in the finn‘s produ
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Total color blindness, ______, is the result of a defect in the retina.A.a rare condition
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The starting current of an a.cmotor is _____ the rated current.A.the same asB.much larger
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Which of the following is the current debate NOT
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