文档介绍：1989 年全国硕士研究生入学统一考试英语试题 Section I Close Test For each numbered blank in the following passage there are four choices labeled [A],[B],[C] and [ D] . Choose the best one and put your choice in the ANSWER SHEET. Read the whole passage before making your choice. (10 points) ① One day drought may bea thing of the past at least in coastal cities. ② Vast areas of desert throughout the world may for the first time 1 and provide millions of hectares of land where now nothing grows. ③ By the end of this century this may not be mere 2.④ Scientists are already looking into the possibility of using some of the available ice in the Arctic and Antarctic. ⑤ In these regions there are vast ice - caps formed by snow that has fallen over the past 50,000 years. ⑥ Layer 3 layer of deep snow means that, when melted, the snow water would be pure, not salty as sea - ice would be. ⑦ There is so much 4 pure water here that it would need only a fraction of it to turn much of the desert or poorly irrigated parts of the world into rich farmland. ⑧ And what useful packages it e in! ⑨ It should be possible to cut off a bitof ice and transport it!⑩ Alternatively perhaps a passing iceberg could be5. ○ 11 They are always breaking away from the main caps and floating around, pushed by currents, until they eventually melt and are wasted. ○ 12 Many icebergs are, of course, far too small tobe towed 6 distance, and would melt before they reached a country that needed them anywhere. ○ 13 It would be necessary to locate one that was 7 and that was big enough to provide a good supply of ice when it reached us. ○ 14 Engineers think that an iceberg up to seven miles long and one and a half miles wide could be transported if the tug pulling it was as big asa supertanker! ○ 15 Even then they would cover only twenty miles every day. ○ 16 However, 8 the iceberg was at itsde stination, more that 7,000 million cubic metres of water could be taken from it! ○ 17 That would probably be more than enough for any medium