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Despite legislation designed to stem the accumulation of plastic waste, the plastics industry continued to grow rapidly last yea

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问题 Despite legislation designed to stem the accumulation of plastic waste, the plastics industry continued to grow rapidly last year, as can be seen from the fact that sales of the resin that is the raw material for manufacturing plastics grew by 10 percent to $28 billion.
In assessing the support provided by the evidence cited above for the statement that the plastics industry continued to grow, in addition to the information above it would be most useful to know
选项 A、whether the resin has other uses besides the manufacture of plastics
B、the dollar amount of resin sales the year before last
C、the plastics industry’s attitude toward the legislation concerning plastic waste
D、whether sales of all goods and services in the economy as a whole were increasing last year
E、what proportion of the plastics industry’s output eventually contributes to the accumulation of plastic waste
答案A
解析 Argument Evaluation
Situation There is legislation meant to slow the accumulation of plastic waste. Last year, however, the plastics industry continued to grow rapidly. Sales of the resin that is the raw material for plastics grew in monetary terms by 10 percent.
Reasoning What additional information should we seek in order to evaluate the evidence offered for the conclusion that the plastics industry continued to grow rapidly last year? The evidence offered is that sales of resin from which plastics can be made increased 10 percent over the preceding year. For example, we could inquire whether the resin is used exclusively for plastics manufacture. If this were found NOT to be so, then the evidence presented would be of little use in showing that the plastics industry grew rapidly last year.
A Correct. Knowing whether this is so is crucial for judging the evidential value of last year’s growth in sales of resin.
B This information is implicit in the given information and is therefore not additional information.
C The central issue is whether the information about last year’s resin sales is good evidence of the plastics industry growth. The question as to whether that industry favors curtailment of plastics pollution has little if any relevance to that issue.
D If the answer to this whether-question is yes, there was presumably some inflation in the currency, so the increase in nominal monetary value of resin sales may or may not reflect very strong evidence of growth in the plastics industry. If the answer to the question is no, the increase in resin sales could be evidence of growth but is not necessarily so. In either case, we would need further information, so either answer to the question would not be useful for assessing the evidence.
E Knowing the answer to this could be important, but it is irrelevant in determining the evidential value of the information about growth in resin sales last year.
The correct answer is A.
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