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  3. Recently, a possible alternative way of producing paper hasbeen suggested by

Recently, a possible alternative way of producing paper hasbeen suggested by

游客2025-01-04  33
问题    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 paper, fuel, oils,    【1】______
textiles, food, and rope. For many centuries, it was essential to
the economies of many countries because it used to make the      【2】______
ropes and cables used on sailing ships; colonial expansion and the
establishment of a world-wide trading network would have been    【3】______
possible without hemp.  Nowadays, ships’ cables are usually
made from wire or synthetic fibres, and scientists are now       【4】______
suggesting that the cultivation of hemp should be revived for the
production of paper and pulp. According to its proponents, four
times as that much paper can be produced from land, using hemp   【5】______
rather than trees.
   However, there is a problem:  hemp is illegal in many
countries of the world. This plant, so useful for fibre, rope, oil,【6】______
fuel and textiles, is species of cannabis, related to the plant  【7】______
which marijuana is produced. In the late 1930s, a movement to    【8】______
ban the drug marijuana began to gather force, resulted in the    【9】______
eventual banning of the cultivation not only of the plant used to
producing the drug, but also of the commercial fibre producing
hemp plant—despite the fact marijuana cannot be produced from   【10】______
the hemp plant, since it contains almost no THC (the active
ingredient in the drug). [br] 【M2】
选项
答案 it∧used—was
解析
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