感激不尽...... 169. Corporate officers and directors commonly buy and sell, for their own portfolios, stock in their own corporations. Generally, when the ratio of such inside sales to inside purchases falls below 2 to 1 for a given stock, a rise in stock prices is imminent. In recent days, while the price of MEGA Corporation stock has been falling, the corporation's officers and directors have bought up to nine times as much of it as they have sold. The facts above best support which of the following predictions? (A) The imbalance between inside purchases and inside sales of MEGA stock will grow even further. (B) Inside purchases of MEGA stock are about to cease abruptly. (C) The price of MEGA stock will soon begin to go up. (D) The price of MEGA stock will continue to drop, but less rapidly. (E) The majority of MEGA stock will soon be owned by MEGA's own officers and directors. A）：C 183. Editorial: Regulations recently imposed by the government of Risemia call for unprecedented reductions in the amounts of pollutants manufacturers are allowed to discharge into the environment. It will take costly new pollution control equipment requiring expensive maintenance to comply with these regulations. Resultant price increases for Risemian manufactured goods will lead to the loss of some export markets. Clearly, therefore, annual exports of Risemian manufactured goods will in the future occur at diminished levels. Which of the following, if true, most seriously weakens the argument in the editorial? (A) The need to comply with the new regulations will stimulate the development within Risemia of new pollution control equipment for which a strong worldwide demand is likely to emerge. (B) The proposed regulations include a schedule of fines for noncompliance that escalate steeply in cases of repeated noncompliance. (C) Savings from utilizing the chemicals captured by the pollution control equipment will remain far below the cost of maintaining the equipment. (D) By international standards, the levels of pollutants currently emitted by some of Risemia's manufacturing plants are not considered excessive. (E) The stockholders of most Risemia manufacturing corporations exert substantial pressure on the corporations to comply with environmental laws. A):A 186. Offshore oil-drilling operations entail an unavoidable risk of an oil spill, but importing oil on tankers presently entails an even greater such risk per barrel of oil. Therefore, if we are to reduce the risk of an oil spill without curtailing our use of oil, we must invest more in offshore operations and import less oil on tankers. Which of the following, if true, most seriously weakens the argument above? (A) Tankers can easily be redesigned so that their use entails less risk of an oil spill. (B) Oil spills caused by tankers have generally been more serious than those caused by offshore operations. (C) The impact of offshore operations on the environment can be controlled by careful management. (D) Offshore operations usually damage the ocean floor, but tankers rarely cause such damage. (E) Importing oil on tankers is currently less expensive than drilling for it offshore. A): 195. A proposed change to federal income tax laws would eliminate deductions from taxable income for donations a taxpayer has made to charitable and educational institutions. If this change were adopted, wealthy individuals would no longer be permitted such deductions. Therefore, many charitable and educational institutions would have to reduce services, and some would have to close their doors. The argument above assumes which of the following? (A) Without the incentives offered by federal income tax laws, at least some wealthy individuals would not donate as much money to charitable and educational institutions as they otherwise would have. (B) Money contributed by individuals who make their donations because of provisions in the federal tax laws provides the only source of funding for many charitable and educational institutions. (C) The primary reason for not adopting the proposed change in the federal income tax laws cited above is to protect wealthy individuals from having to pay higher taxes. (D) Wealthy individuals who donate money to charitable and educational institutions are the only individuals who donate money to such institutions. (E) Income tax laws should be changed to make donations to charitable and educational institutions the only permissible deductions from taxable income. A）：A[em06]
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