作业帮英语翻译According to their latest paper published in Nature,the
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英语翻译
According to their latest paper published in Nature,the biomass of large predators (animals that kill and eat other animals) in a new fishery is reduced on average by 80% within 15 years of the start of exploitation.In some long-fished areas,it has halved again since then.
请问根据这段话,这道题选哪个
32.We can infer from Dr.Myers and Dr.Worm’s paper that ________.
[A] the stock of large predators in some old fisheries has reduced by 90%
[B] there are only half as many fisheries as there were 15 years ago
[C] the catch sizes in new fisheries are only 20% of the original amount
[D] the number of larger predators dropped faster in new fisheries than in the old
According to their latest paper published in Nature,the biomass of large predators (animals that kill and eat other animals) in a new fishery is reduced on average by 80% within 15 years of the start of exploitation.In some long-fished areas,it has halved again since then.
请问根据这段话,这道题选哪个
32.We can infer from Dr.Myers and Dr.Worm’s paper that ________.
[A] the stock of large predators in some old fisheries has reduced by 90%
[B] there are only half as many fisheries as there were 15 years ago
[C] the catch sizes in new fisheries are only 20% of the original amount
[D] the number of larger predators dropped faster in new fisheries than in the old
A吧
the biomass of large predators in a new fishery is reduced on average by 80% within 15 years of the start of exploitation.In some long-fished areas,it has halved again since then.
hence,in a new fishery,the amount of large predators is 20% of the original; when it is halved again,it becomes only 10% in old fisheries.thus the amt of large predators is reduced by 90% from the original.that's what i guess,not very familiar with such questions
the biomass of large predators in a new fishery is reduced on average by 80% within 15 years of the start of exploitation.In some long-fished areas,it has halved again since then.
hence,in a new fishery,the amount of large predators is 20% of the original; when it is halved again,it becomes only 10% in old fisheries.thus the amt of large predators is reduced by 90% from the original.that's what i guess,not very familiar with such questions
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