题干

设集合U={0,1,2,3,4,5},A={1,2},B={x∈Z|x2﹣5x+4<0},则∁U(A∪B)=(   )

A:{0,1,2,3}

B:{5}

C:{1,2,4}

D:{0,4,5}

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D

同类题1

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       I prefer Lynne Truss's phraseology: I am a grammar “sticker”. And, like Truss—author of Eats, Shoots & Leaves—I have a “zero tolerance” approach to grammar mistakes that make people look stupid.

       Now, Truss and I disagree on what it means to have “zero tolerance”. She thinks that people who mix up basic grammar “deserve to be struck by lightning, hacked (砍) up on the spot and buried in an unmarked grave”, while I just think they deserve to be passed over for a job—even if they are otherwise qualified for the position.

       Everyone who applies for a position at either of my companies, iFixit or Dozuki, takes a compulsory grammar test. If job hopefuls can't distinguish between “to” and “too”, their applications go into the bin.

       Of course, we write for a living. iFixit. com is the world's largest online repair manual (指南), and Dozuki helps companies write their own technical documentation, like paperless work instructions and step­by­step user manuals. So, it makes sense that we've made a strong strike against grammar errors.

        But grammar is relevant for all companies. Yes, language is constantly changing, but that doesn't make grammar unimportant. Good grammar is credibility, especially on the Internet. And, for better or worse, people judge you if you can't tell the difference between “their” “there” and “they're”.

       Good grammar makes good business sense—and not just when it comes to hiring writers. Writing isn't in the official job description of most people in our office. Still, we give our grammar test to everybody, including our salespeople, our operations staff, and our programmers.

       Grammar signifies more than just a person's ability to remember high school English. I've found that people who make fewer mistakes on a grammar test also make fewer mistakes when they are doing something completely unrelated to writing—like stocking shelves or labeling parts. It is the same with programmers. Applicants who don't think writing is important are likely to think lots of other things also aren't important.

同类题5

阅读下面的文字,完成后面小题。

宋代,治理者与被治理者的平等自愿合作关系必须以共利双赢为基础,否则平等自愿合作关系就无法实现,即使暂时实现也很难持久。正如宋代耿延年在总结信州铅山铜场兴衰的原因时指出:“惟务与民共利,经久可行。不欲专利于官,而有害于民;不欲取办一时,而贻患于后。”入中也是如此。官府依据入中法招募商人入纳粮草于规定的沿边地点,给予钞引,使至京师或他处领取现钱或金银、盐、茶、香药等,“若官尽其利,则商旅不行”。

  宋初对酒、醋、陂塘、墟市、渡口等的税收,由官府核计应征数额,招商承包。商人缴保证金于官,取得征税之权,谓之买扑。宋代在买扑承包经营中,官府所定竞标价必须适中,即一方面竞标者以这一竞标价承包后,通过经营可以获取承包利润;另一方面,官府作为招标者,以这一竞标价转让经营权后可以尽可能地获取财政收入最大化。这就是“承扑者无破败之患,而官入之利有常而无失也”。换言之,竞标价不能太高,否则竞标承包者就很有可能不赢利,甚至亏损。另一方面,如竞标价太低,官府作为招标者无法从转让经营权中获得财政收益,同样,这种买扑承包也没必要存在。

宋代的入中法能较长久地实行一段时期,其基础也是官商双方共利双赢。如有一方不能从中获得好处,就会中止双方的平等自愿合作。入中法中政府得到的好处甚多,既通过卖茶获利。更重要的是又可通过商人解决沿边军需供给难题。而对于商人来说,则可获得较丰厚的商业利润。

  相反,入中法的失败,其关键原因就是大量茶引无法兑现茶叶而贬值,使商人无利可图。甚至亏本,商人只好退出入中法,中止与政府的合作。正如文彦博指出的:“非茶法弊,盖昔年用兵西北,调边食急,用茶偿之,其数既多,茶不售则所在委积,故虚钱多而坏法也。”

  宋初以来的矿冶业,不问冶户冶炼的多寡,必须按照国家硬性规定的矿税课额缴纳。由于当时技术的限制,难以探明矿藏量,如果实行课额制,很难准确保持官府与坑户、冶户之间共利双赢的合作平衡点,使双方的平等合作关系失去坚实的基础。到王安石变法期间,与召募制相结合的分成制便应运而生了,这就是二八抽分制。如绍兴七年,朝廷同意“金银坑场并依熙丰法召百姓采取,自备物料烹炼,十分为率,官收二分,其八分许坑户自便货卖”,使官府与坑户、冶户的共利双赢找到了一个“经久可行”的平衡点。尤其对于后者来说,避免了因生产不足但课额不减而引起的折业代赔的弊端,坑户、冶户的再生产获得了一定的保证。

  宋代政府在经济活动中确立官民平等自愿合作关系时,重视以共利双赢为基础。如在出让坑冶坊场经营权时,注意根据各州买扑坊场历届课利的增减情况,酌中确定一个课利钱数额。作为本届承包的最低价。南宋政府出卖、出租官田宅时,要求立价“量度适中估价,务要公当,不致亏损公私”,并严防官吏在估产立价中营私舞弊。

(摘编自方宝璋《略论宋代政府经济管理从统治到治理的转变》)