he 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.Р56. A. matching B. equivalent C. mounting D. reachingР57. A. great B. wonderful C. imaginary D. alarmingР58. A. for B. on C. at D. toР59. A. types B. categories C. species D. classes
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