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  3. Much of Canada’ s forestry production goes towards making pulp and paper. According to the Canadian Pulp and Paper Association,

Much of Canada’ s forestry production goes towards making pulp and paper. According to the Canadian Pulp and Paper Association,

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问题     Much of Canada’ s forestry production goes towards making pulp and paper. According to the Canadian Pulp and Paper Association, Canada supplies 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 preserved. Recently, a possible alternative 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 made into paper, fuel, oils, textiles, food, and rope. For centuries, it was essential to the economies of many countries because it was used to make the ropes and cables used on sailing ships; colonial expansion and the establishment of a world - wide trading network would not have been feasible without hemp. Nowadays, ships’ cables are usually made from wire or synthetic fibres, but scientists are now suggesting that the cultivation of hemp should be revived for the production of paper and pulp. According  to its proponents, four times as much paper can be produced from land using hemp rather than trees, and many environmentalists  believe that the large- scale cultivation of hemp could reduce the pressure on Canada’s forests.
    However, there is a problem: hemp is illegal in many countries of the world. This plant, so useful for fibre, rope, oil, fuel and textiles, is a species of cannabis, related to the plant from Which marijuana is produced. In the late 1930s,a movement to ban the drug marijuana began to gather force, resulting in the eventual banning of the cultivation not only of the plant used to produce the drug, but also of the commercial fibre - producing hemp plant. In fact, marijuana cannot, be produced from the hemp plant, since it contains almost no THC (the active ingredient in the drug).
    In recent years, a movement for legalization have been gathering strength. It is concerned only with the hemp plant used to produce fibre; this group wants to make it legal to cultivate the plant and sell the fibre for paper and pulp production.
Why do agriculturalists think that hemp would be better for paper production than trees?
选项 A、It is cheaper to grow hemp than to cut down trees.
B、More paper can be produced from the same area of land.
C、Hemp produces higher quality paper.
D、It causes less pollution of the environment.
答案B
解析 原文第二段最后一句话“four times as much paper can be produced from land using hemp rather than trees，and many environmentalists believe that the large - scale cultivation of hemp could reduce the pressure on Canada’s forests”意思是，环境学家据此认为大规模种植麻将缓解加拿大森林砍伐的压力，由此可见麻造纸的优势在于产纸量大，从而减少树木的砍伐量，保护环境。答案A种麻比砍树便宜、答案C麻造的纸质量更好；答案D麻较少污染环境均与原文不符。
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