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GWD28-9应该选A还是选B,奇怪了怎么觉得都对

Early in the twentieth century, Lake Konfa became very polluted. Recently fish populations have recovered as release of industrial pollutants has declined and the lake’s waters have become cleaner. Fears are now being voiced that the planned construction of an oil pipeline across the lake’s bottom might revive pollution and cause the fish population to decline again. However, a technology for preventing leaks is being installed. Therefore, provided this technology is effective, those fears are groundless.

The argument depends on assuming which of the following?

  1. Apart from development related to the pipeline, there will be no new industrial development around the lake that will create renewed pollution in its waters.

  2. Other than the possibility of a leak, there is no realistic pollution threat posed to the lake by the pipeline’s construction.

  3. There is no reason to believe that the leak-preventing technology would be ineffective when installed in the pipeline in Lake Konfa.

  4. Damage to the lake’s fish populations would be the only harm that a leak of oil from the pipeline would cause.

  5. The species of fish that are present in Lake Konfa now are the same as those that were in the lake before it was affected by pollution.

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的确应该选B A是无关选项

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B, A is irrelevant about pipeline construction.

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However, a technology for preventing leaks is being installed.

文章结论是provided this technology is effective, those fears are groundless

联系文章的结论和选项, 只有B是ASSUMPTION, A是无关选项

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A 怎么排除呢/??不是也是NOT+WEAKEN么??

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B

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