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Commercial aquaculture can be a【B1】______and environmentally sustainable activity if conducted with the right methods in the rig
Commercial aquaculture can be a【B1】______and environmentally sustainable activity if conducted with the right methods in the rig
admin
2014-09-30
29
问题
Commercial aquaculture can be a【B1】______and environmentally sustainable activity if conducted with the right methods in the right waters, according to a report【B2】______by the US National Oceanic and Atmospheric Administration(NOAA).
Practices in various localities【B3】______show that " farming with minimal or acceptable environmental effects is possible in many ecosystems as long as proper safeguards are in place to【B4】______nutrient and chemical discharge and to manage its immediate and cumulative impacts," according to the NOAA report.
The report notes that changing trends in aquaculture practices have lowered the number of water-quality problems from the number detected in the early years of the industry. Farms that【B5】______deep, well-flushed waters can usually avoid creating risks for the water quality of benthic(深海底的)communities.
If waters are not well flushed and sufficiently deep, feeding the caged fish can lead to excessive【B6】______of nutrients and wastes, which endangers the balance necessary to sustain wild populations.
About half of all fish【B7】______globally are produced in farms, and the amount is likely to increase to meet the world’s demands for protein. Overfishing of many traditional fishing grounds has depleted native supplies just as expanding populations and greater【B8】______create a demand for more fish in the markets.
The rising world population is becoming more【B9】______aquaculture for food production. In the US, domestic aquaculture can aid in decreasing US dependence on imported products, provide jobs and food security, and meet the rising demand for seafood. NOAA is working to【B10】______that industry growth occurs within a framework of environmental responsibility and ocean stewardship.
【B6】
Commercial aquaculture can be a(26)profitable and environmentally sustainable activity if conducted with the right methods in the right waters, according to a report(27)issued by the US. National Oceanic and Atmospheric Administration(NOAA).
Practices in various localities(28)consistently show that "farming with minimal or acceptable environmental effects is possible in many ecosystems as long as proper safeguards are in place to
(29)minimize nutrient and chemical discharge and to manage its immediate and cumulative impacts," according to the NOAA report.
The report notes that changing trends in aquaculture practices Have lowered the number of water-quality problems from the number detected in the early years of the industry. Farms that (30)are located in deep, well-flushed waters can usually avoid creating risks for the water quality of benthic(深海底的)communities.
If waters are not well flushed and sufficiently deep, feeding the caged fish can lead to excessive(31)accumulation of nutrients and wastes, which endangers the balance necessary to sustain wild populations.
About half of all fish(32)consumed globally are produced in farms, and the amount is likely to increase to meet the world’s demands for protein. Overfishing of many traditional fishing grounds has depleted native supplies just as expanding populations and greater(33)affluence create a demand for more fish in the markets.
The rising world population is becoming more(34)reliant on aquaculture for food production. In the US, domestic aquaculture can aid in decreasing US dependence on imported products, provide jobs and food security, and meet the rising demand for seafood. NOAA is working to(35)ensure that industry growth occurs within a framework of environmental responsibility and ocean stewardship.
选项
答案
accumulation
解析
分析句子结构可知,空格处 应填入名词中心词。accumulation意为 “积累”。
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0
大学英语六级
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