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Q24 Although improved efficiency in converting harvested trees into wood products may reduce harvest rates, it will stimulate demand by increasing supply and lowering prices, thereby boosting consumption. A. in converting harvested trees into wood products may reduce harvest rates, it will stimulate demand by increasing supply and lowering prices, thereby boosting. B. In converting harvested trees into wood products may reduce harvest rates, demand will be stimulated because of increasing supply and lowering prices, which boost. C. Of converting harvested trees into wood products may reduce harvest rates, it will stimulate demand by increasing supply and lowering prices, which boosts. D. Of harvested trees being converted into wood products may reduce harvest rates, it will stimulate demand, because it will increase supply
Answer: B, but I think it should be A because "it " denotes "imroved efficiency".First it reduce
sth, later it improves sth . Futhermore, even if demand is correct as a subject, "which boost" is wrong
in grammar, should be " which boosts".
Q39. Navigators have known for thousands of years that the ocean has variable currents, but it is only in the last half century that a reasonably clear picture has emerged of the patterns and causes of ocean currents. A. a reasonably clear picture has emerged of the patterns and causes of ocean currents. B. a reasonably clear picture of the patterns of ocean currents and their causes have emerged. C. a reasonably clear picture emerged of ocean currents, their patterns and the causes of them D. there have emerged a reasonably clear picture of the patterns of ocean currents and what caused them. E. there had emerged a reasonably clear picture of the patterns of ocean currents and their causes. Answer: A I think "has emerged" can match "in the last half century answer should be E.
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发表于 2008-2-22 05:28:00
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