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For investors who desire low risk and guaranteed income,U.S. Government bonds are a secure investment because these bonds have the financial backing and full faith and credit of the federal government.
出自-2014年6月阅读原文
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Well, that's a good question, because the basic idea of chaos theory is that there aren't any "models" as such— there aren't guaranteed forms, but rather patterns of change in development
出自-2013年6月听力原文
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5 million worth of young Bison that will be raised according to its grass-fed protocols, with a guaranteed purchase price.
2019年12月六级真题（第三套）阅读 Section B
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Maple Hill signs a contract pledging to buy the farmer's milk at a guaranteed base price, plus quality premiums and incentives for higher protein, butter fat and other solids.
2019年12月六级真题（第三套）阅读 Section B
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The U.S. is also the only advanced economy that does not guarantee workers paid vacation time, and it's one of only two countries in the world that does not offer guaranteed paid maternity leave.
2016年12月六级真题（第一套）阅读 Section B