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One state adds a 7 percent sales tax to the price of most products purchased within its jurisdiction. This tax, therefore, if viewed as tax on income, has the reverse effect of the federal income tax: the lower the income, the higher the annual percentage rate at which the income is taxed.
The conclusion above would be properly drawn if which of the following were assumed as a premise?
(A) The amount of money citizens spend on products subject to the state tax tends to be equal across income levels.
(B) The federal income tax favors citizens with high incomes, whereas the state sales tax favors citizens with low incomes.
(C) Citizens with low annual incomes can afford to pay a relatively higher percentage of their incomes in state sales tax, since their federal income tax is relatively low.
(D) The lower a state’s sales tax, the more it will tend to redistribute income from the more affluent citizens to the rest of society.（A）
(E) Citizens who fail to earn federally taxable income are also exempt from the state sales tax.
w这道题看不出来 答案也想不明白。
ｐ56/44 A recent report determined that although only three percent of drivers on
The conclusion drawn above depends on which of the following assumptions?
(A) Drivers who equip their vehicles with radar detectors are less likely to be ticketed for exceeding the speed limit than are drivers who do not.
(B) Drivers who are ticketed for exceeding the speed limit are more likely to exceed the speed limit regularly than are drivers who are not ticketed.
(C) The number of vehicles that were ticketed for exceeding the speed limit was greater than the number of vehicles that were equipped with radar detectors.
(D) Many of the vehicles that were ticketed for exceeding the speed limit were ticketed more than once in the time period covered by the report.（B）
(E) Drivers on
怎么比出来的？？ 绕不出来了
p182/57 Companies considering new cost-cutting manufacturing processes often compare the projected results of making the investment against the alternative of not making the investment with costs, selling prices, and share of market remaining constant.
Which of the following, assuming that each is a realistic possibility, constitutes the most serious disadvantage for companies of using the method above for evaluating the financial benefit of new manufacturing processes?
(A) The costs of materials required by the new process might not be known with certainty.
(B) In several years interest rates might go down, reducing the interest costs of borrowing money to pay for the investment.
(C) Some cost-cutting processes might require such expensive investments that there would be no net gain for many years, until the investment was paid for by savings in the manufacturing process.
(D) Competitors that do invest in a new process might reduce their selling prices and thus take market share away from companies that do not.（D）
(E) The period of year chosen for averaging out the cost of the investment might be somewhat longer or shorter, thus affecting the result.
为什么？
拿着答案没想明白？
p285 / 2 Defense Department analysts worry that the ability of the
Which of the following, if true, contributes most to an explanation of the machine-tool industry’s raising the issue above regarding national security?
(A) When the aircraft industries retooled, they provided a large amount of work for tool builders.
(B) The Defense Department is only marginally concerned with the effects of foreign competition on the machine-tool industry.
(C) The machine-tool industry encountered difficulty in obtaining governmental protection against imports on grounds other than defense.
(D) A few weapons important for defense consist of parts that do not require extensive machining.（C）
(E) Several federal government programs have been designed which will enable domestic machine-tool manufacturing firms to compete successfully with foreign toolmakers.
解释看不懂， 机械部门其他方面受挫就一定来头这个票？？ 进口配额与机械部门有什么关系？ 想不明白
请大家帮帮我这个白菜脑袋。都是想不通的问题，需要讲解 还有几道题再发一个帖子。谢谢了
爱爱MM，希望我的解释可以有点作用：
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答案A是前提，意思是对那些征收7％销售税的东西来说，各个收入水平的人都需要花费差不多一样的钱。比如大米，牛奶这些基本生活用品，收入低的也要吃那么多，收入高的也要吃那么多，所以在这些东西上花费的钱数量差不多，但是由于这个数量占收入低的人的总收入的比例大（上帝保佑这句中文你能看懂），所以，收入低的，反而被征税的比率高，注意是占总收入的比率，不是钱数！！
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