48 What does the modern fishing industry use to help hunt fish on a large scale?
(A) Satellites
(B) Coastal net traps
(C) Angling
(D) Rocket-propelled harpoons

For sushi aficionado酷愛…者；著迷, the essence重要性, 本質、氣味／味道、香精 of the Atlantic bluefin tuna藍鰭金槍魚 is its fat-laced, butter-soft belly腹部，胃 meat, called toro.

For those who seek the bluefin from Cape Hatteras off the coast of North Carolina to the  frigid極冷、性冷感的、冷淡 waters south of Iceland to the balmy溫和宜人 Mediterranean, the fish are a potential bonanza獲利之道；發財的機會, with choice specimen樣品；標本 selling for $50,000 or more in Tokyo.

But the intensifying加強，增強 trade in bluefin may soon empty the waters of this master of the sea.

In just the last 35 years, exploding爆炸、情感突然、突然發作 markets for sushi- grade等級 tuna, combined with iindustrial scale大規模 hunts aided輔助 by satellites在太空, 人造衛星 and  spotters（以物色某類人或搜集某類東西爲職業或興趣的人）探、探子 in airplanes, have devastated被摧毀 not only the fish but also many fisheries漁業.  

Dozens十二個，一打 of Mediterranean towns that maintained coastal net用網捕 traps防止逃走的物件, 陷阱；夾子 for half a millennium一千年 or more are turning away from now-barren貧瘠的；不毛的 waters.

Anglers off New England now scour清除, 擦 the seas for scattered分散 fish.

Most valuable, marine biologists say, is the apparently distinct顯著 population of bluefin tuna that breeds in the Gulf of Mexico.

The threat to the bluefin was underscored划线于下, 强调 recently by researchers who have tracked hundreds of the fish using electronic tags.

They found that the tuna that spawn卵 in the west, which are most severely depleted消耗；耗費, are threatened by an ever-broadening gantlet長手套 of hooks, seines（捕魚用）圍網( seine的名詞復數), harpoons捕鯨叉 traps and now farm-style pen筆、（尤指飼養動物的）圈，欄、監獄 in which netted fish are raised and fattened— all to supply the Japanese sushi trade.