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  3. Every second,【56】hectare of the world’s rainforest is destroyed. That’s one

Every second,【56】hectare of the world’s rainforest is destroyed. That’s one

游客2025-04-22  16
问题     Every second,【56】hectare of the world’s rainforest is destroyed. That’s one to two football fields.
    This【57】rate of destruction has serious consequences【58】the environment. Scientists estimate, for example, that 137【59】of plant, insect or animal become【60】every day due to logging. In British Columbia,
    【61】,since 1990,thirteen rainforest valleys have been clear cut,142 species of salmon have already become extinct, and the【62】of grizzly bears, wolves and many other creatures are threatened. Logging,
    【63】,provides jobs , profits, taxes for the government and cheap products of all kinds for consumers, so the government is【64】to restrict or control it. Much of Canada’s forestry production【65】making pulp and paper. According to the Canadian Pulp and Paper Association, Canada【66】34%of the world’s wood pulp and 49% of its newsprint paper. If these paper products could be produced in some other way, Canadian forests could be【67】. Recently, a possible【68】way of producing paper has been suggested by agriculturalists and environmentalists: a plant called hemp. Hemp has been cultivated by many cultures for thousands of years. It produces fibre which can be【69】paper, fuel, oils, textiles, food, and rope. For many centuries, it was essential to the economies of many countries【70】it was used to make the ropes and cables used on sailing ships; colonial expansion and the establishment of a world-wide trading【71】would not have been possible【72】hemp. Nowadays, ships’ cables are usually made from wire or synthetic fibres, but scientists are now suggesting that the cultivation of hemp should be【73】for the production of paper and pulp. According to its proponents, four-times as【74】paper can be produced from land using hemp rather than trees, and many environmentalists believe that the【75】scale cultivation of hemp could reduce the pressure on Canada’s forests. [br]
选项 A、maintained
B、sustained
C、preserved
D、held
答案 C
解析 本题考核的知识点是：动词辨析。四个词都有“保持，维持”的含义，可有以下差别：maintain指“供养家庭，维修、保养(机器、道路等)”；sustain有“抵挡、忍耐困难”的含义；preserve指“保护、维持(自然资源，历史古迹)，保存食物不变质”；hold指“保持原有的姿态、金钱、：土地、职位等不变”。本文中，森林的保护和维持应该用preserve。
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