一块O℃的冰熔化成O℃的水，它的内能变化情况是（ ） A．变大 B．变小 C．不 发布时间：2017-06-02 10:46 │ 来源：www.tikuol.com 题型：选择题 问题： 一块O℃的冰熔化成O℃的水，它的内能变化情况是（ ）A．变大B．变小C．不变¨D．不能确定
题型：选择题 阅读理解。 Taxes are a big part in the United States. Most Americans pay city taxes, state taxes, social security (安全)taxes, sales taxes… and the list seems endless. The biggest tax for most Americans is the incomes tax. The personal income tax is called a "progressive tax", because it takes more from those who earn (挣钱) most. Forexample, a person who earns about ＄3,500 a year, will pay a tax of only about 3.5% of earning, but if thesame person earned ＄85,000 a year, he would pay an income tax of 35%. Over years the incomes tax has become more and more difficult for people to understand. Almost one half of all Americans now have to pay experts to prepare their tax reports. In fact, preparing taxes and giving tax have become a big industry (工业)in America. 1. Most Americans pay ______. [ ]A. taxes which are too many to list B. taxes either to the cities or the states they live inC. several kinds of taxes D. so many kinds of taxes that they even don't know the names 2. Which is the biggest tax for most Americans is ______. [ ]A. the state tax B. the social security (安全) tax C. the income tax D. the city tax 3. Which of the following is NOT true? [ ]A. Americans have all kinds of taxes. B. Personal income tax is the biggest tax in American. C. The more a person earns, the more income tax he should pay. D. Personal income tax can prevent the rich from getting richer. 4. The so-called "progressive tax" is the tax ______. [ ]A. collected for social progress B. that increases with each passing year C. that is collected from those who earn most D. that varies (变化) according to how much money a person earns 5. Why have preparing and giving advice become a big industry in America? Because . [ ]A. the list of taxes seems endlessB. they would rather spend their time and energy elsewhere C. they find their knowledge about taxes is too limited to write a tax report by themselves D. paying experts to prepare their tax reports and asking for tax have been very popular g 查看答案
题型：选择题 患者男性，62岁。主因发作性左眼视物不清，右侧肢体麻木、无力伴言语不清5天，发作时言语含糊不清，右侧肢体完全不能活动，持续约5～10分钟后自行缓解，每天发作1～2次，无其他不适，发作后完全正常。既往有高血压病史20年，平素血压控制在150～170/100～110mmHg之间。查体：血压170/110mmHg，左侧颈部可闻及血管杂音，余无阳性体征。此患者病变定位在哪（）A.左侧大脑半球B.右侧大脑半球C.左侧小脑半球D.右侧小脑半球E.小脑蚓部F.脑干G.脑室H.脊髓I.周围神经J.神经肌肉接头K.肌肉 查看答案
题型：选择题 马丁·路德·金有一句名言：“黑暗不能驱走黑暗，只有光明才能做到；仇恨不能驱走仇恨，只有爱心才能做到”。这一名言给我们的哲学启示是（）①正确的价值观对事物发展起促进作用②要在对立中把握统一，在统一中把握对立③新事物是在取代旧事物的过程中成长④价值判断价值选择具有社会历史性A.①②B.①④C.②③D.③④ 查看答案