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为期一个月的《个人所得税法修正案（草案）》征求意见于2011年5月31日结束，社会关注的焦点多集中在如何把免征额设定得更合理。征收个人所得税的重要作用在于（）。①调节个人收入分配②增加财政收入③扩大个人收入差距④实现社会公平
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案例分析题When I came to the United States, I didn’t speak any English. When anyone asked me something, I always said "Yes." But I really didn’t know what they were saying. Once I went to a large store to buy a mouse (鼠标) for my computer. When I got there, I was worried about the price. At last I found a cheap mouse. I checked the price to make sure of it before I went to the cashier. While I was at the cashier’s, she asked me something. I said, "Yes," even though I didn’t understand what she said. Then she told me what I had to pay. The price was different. I knew something was wrong. But I was afraid to say anything. Later, at home, I thought about what the cashier said to me. What made the price go up Then my husband came home. He looked at the receipt and found out what was wrong. The cashier’s question was, "Would you like a one-year warranty (保修)" and my answer was, "Yes." Since that day, I have never said "Yes" before I understand the question. And I have never paid more than the actual (实际的) price. The writer is studying in the United States.（）
主权是主权国家最重要的构成要素，因为主权是（）。
“穷且益坚，不坠青云之志。”唐代诗人王勃的这句名言体现的民族精神是（）。
C Federal regulators Wednesday approved a plan to create a nationwide emergence alert (警报) system using text messages delivered to cell phones. Text messages have exploded in popularity in recent years, particularly among young people. The wireless industry’s trade association, CTIA, estimates (估计) more than 48 billion text messages are sent each month. The plan comes from the Warning Alert and Response Network Act, a 2006 federal law that requires improvements to the nation’s emergency alert system. The act tasked the Federal Communications Commission (FCC. with coming up with new ways to alert the public about emergencies. "The ability to deliver accurate and timely warnings and alerts through cell phones and other mobile services is an important next step in our efforts to help ensure that the American public has the information they need to take action to protect themselves and their families before, and during, disasters and other emergencies," FCC Chairman Kevin Martin said following approval of the plan. Participation in the alert system by carriers—telecommunications companies is voluntary, but it has received solid support from the wireless industry. The program would be optional for cell phone users. They also may not be charged for receiving alerts. There would be three different types of messages, according to the rules. The first would be a national alert from the president, likely involving a terrorist attack or natural disaster. The second would involve "approaching threats," which could include natural disasters like hurricanes or storms or even university shootings. The third would be reserved for child abduction (绑架) emergencies, or so-called Amber Alerts. The service could be in place by 2010. An alert message will NOT be sent if ______.
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