Q38: Nitrogen dioxide is a pollutant emitted by automobiles. Catalytic converters, devices designed to reduce nitrogen dioxide emissions, have been required in all new cars in Donia since 1993, and as a result, nitrogen dioxide emissions have been significantly reduced throughout most of the country. Yet although the proportion of new cars in Donia’s capital city has always been comparatively high, nitrogen dioxide emissions there have showed only an insignificant decline since 1993. Which of the following, if true, most helps to explain the insignificant decline in nitrogen dioxide emissions in Donia’s capital city? A) More of the cars in Donia’s capital city were made before 1993 than after 1993. B) The number of new cars sold per year in Donia has declined slightly since 1993. C) Pollutants other than nitrogen dioxide that are emitted by automobiles have also been significantly reduced in Donia since 1993. D) Many Donians who own cars made before 1993 have had catalytic converters installed in their cars. E) Most car trips in Donia’s capital city are too short for the catalytic converter to reach its effective working temperature. Answer: Q39: In 2000, a mere two dozen products accounted for half the increase in spending on prescription drugs, a phenomenon that is explained not just because of more expensive drugs but by the fact that doctors are writing many more prescriptions for higher-cost drugs. A) a phenomenon that is explained not just because of more expensive drugs but by the fact that doctors are writing B) a phenomenon that is explained not just by the fact that drugs are becoming more expensive but also by the fact that doctors are writing C) a phenomenon occurring not just because of drugs that are becoming more expensive but because of doctors having also written D) which occurred not just because drugs are becoming more expensive but doctors are also writing E) which occurred not just because of more expensive drugs but because doctors have also written Answer: Q39可以解釋一下為什麼C錯嗎?? --

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