下面我们以一个具体的例子来说明：
9 h6 l3 ?% B+ e) T7 A+ ]Although, recent years have seen substantial reductions in noxious pollutants from individual motor vehicles, the number of such vehicles has been steadily increasing consequently, more than 100 cities in the United States still have levels of carbon monoxide, particulate matter, and ozone (generated by photochemical reactions with hydrocarbons from vehicle exhaust) that exceed legally established limits. There is a growing realization that the only effective way to achieve further reductions in vehicle emissions—short of a massive shift away from the private automobile—is to replace conventional diesel fuel and gasoline with cleaner-burning fuels such as compressed natural gas, liquefied petroleum gas, ethanol, or methanol.
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Which of the following most closely parallels the situation described in the first sentence of the passage?! B* W0 G/ w0 q5 J. `) z; S0 ~
(A) Although a town reduces its public services in order to avoid a tax increase, the town’s tax rate exceeds that of other towns in the surrounding area." R4 L! O( g9 `( e
(B) Although a state passes strict laws to limit the type of toxic material that can be disposed of in public landfills, illegal dumping continues to increase.# h! g( A8 s# n, Q. Y. Q3 a: |
(C) Although a town’s citizens reduce their individual use of water, the town’s water supplies continue to dwindle because of a steady increase in the total population of the town.7 F! e+ t4 @9 X) ~
(D) Although a country attempts to increase the sale of domestic goods by adding a tax to the price of imported goods, the sale of imported goods within the country continues to increase.& X* V2 Y: u% M2 x9 \1 R4 J
(E) Although a country reduces the speed limit on its national highways, the number of fatalities caused by automobile accidents continues to increase. |
发表于 2012-8-15 13:05:25
