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结合 ______ 和自顶向下结构化方法的思想构成了现在大部分信息系统开发方法的理论基础，如结构化生命周期方法。
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It has been almost half a decade since Norman Mailer described leas Vegas in his novel The American Dream. But it (1) to be one of the most (2) and exhilarating (使人愉快的) holiday destinations in the world. An end-less (3) of colorful sights and activities are surrounded by skyscrapers and the magnificent Nevada desert. With (4) shopping, luxury spas, five-star dining and some of the most extravagant entertainment, you will (5) see, this is a city (6) offers an experience like no other. Perhaps the enduring appeal of this " (7) capital of the world", though, is that it always has something (8) to offer. Recently the Hard Rock Café has been (9) up its act, completing with a new 42 000 sq ft venue, 1 000-seater cinema and an "interactive rock wall"-allowing customers the chance to (10) images of Hard Rock’s collection. City Center is an $ 8.5 billion (￡5.3 billion) complex on the Strip; a place that, in a city already (11) with extraordinary casinos (娱乐场) and hotels, stands out from the (12) It was the largest privately (13) construction project in the US and has three stand-alone hotels, a sprawling shopping and entertainment district and two 37-storey glass towers of (14) flats, designed by the likes of Norman Foster. Another Las Vegas (15) , Planet Hollywood, has (16) with luxury developers to create Westgate Towers--where you could own a piece of the action and a chance to come back to Las Vegas every year. (17) , the only thing you’ll (18) of in Vegas is not knowing which club, restaurant or spa to choose from. But then you can always ask a(n) (19) or the concierge--the fantastic thing about this city is that its residents (20) it as much as you will.
目前，根据国家规定以及国家环保部门的要求，出入境检验检疫机构对进口再生物资（俗称废料）实施的是境外检验。（）
证券自营业务是指经中国证监会批准经营证券自营业务的证券公司用自有资金和依法筹集的资金，用自己名义或客户名义开设的证券账户买卖有价证券，以获取盈利的行为。( )
全额交易结算资金制度要求证券公司及其证券营业部必须将客户交易结算资金全额存放于客户交易结算资金专用存款账户和清算备付金账户。( )
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