题目内容

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.
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.
E. Citizens who fail to earn federally taxable income are also exempt from the state sales tax.

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对于内窗台的抹灰要求平整光洁、棱角清晰、上表面水平无泛水。( )

A. 对
B. 错

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高级抹灰其方法为三遍成活、阴阳角找方、对角线设标筋、分层赶平、修整压光。一般用于大型公共建筑物、纪念性建筑物、高级住宅、宾馆以及有特殊要求的建筑物。( )

A. 对
B. 错

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The public is well aware that high blood cholesterol levels raise the risk of stroke caused by blood clots. But a recent report concludes that people with low blood cholesterol levels are at increased risk of the other lethal type of stroke-cerebral hemorrhage, caused when a brain artery bursts. The report suggests that because blood cholesterol plays a vital role in maintaining cell membranes, low blood cholesterol weakens artery walls, making them prone to rupture. The conclusion thus supports a long-standing contention by Japanese researchers that Western diets better protect against cerebral hemorrhage than do non-Western diets. The argument is based on which one of the following assumptions

A. Western diets are healthier than non-Western diets.
B. Western diets result in higher blood cholesterol levels than do non-Western diets.
C. High blood cholesterol levels preclude the weakening of artery walls.
D. Cerebral hemorrhages are more dangerous than strokes caused by blood clots.
E. People who have low blood pressure are at increased risk of cerebral hemorrhage.

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Although part of the ivory available on world markets was taken from wild elephants that were killed illegally, some ivory is derived from sources that nearly all nations define as legal, such as elephants that have died natural deaths. The world’s few remaining wild elephant herds, therefore, are not endangered when those buying ivory at wholesale make a serious effort to limit their purchases to such legal ivory. The argument above depends on the assumption that

A. wholesale buyers attempting to limit their purchases to legal ivory can reliably distinguish legal from illegal ivory.
B. the demand for products made from legal ivory will continue to grow in the near future.
C. there are currently fewer wholesale sources of legal ivory in the world than there are of illegal ivory.
D. wholesale buyers of ivory products are generally unaware of the reasons for the dwindling world supply of ivory.
E. a continued supply of legal ivory is ensured because elephants reproduce in captivity.

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