问题
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Despite their lack of success so far, research scientists have ______ in their research fo
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Recently some banks extend their business to university campus and offer credit cards to s
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Salmon spend most of their adult lives in salt water, despite they return to their freshwa
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The more women and minorities make their way into the ranks of management the more they s
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Crocodiles(鳄鱼)lay their eggs and leave them under leaves or sand. Baby crocodiles have s
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阅读理解。 The more women and minorities make their way into the ranks of management the more they s