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第6部分：完形填空（第51～65题，每题1分，共15分）阅读下面的短文，文中有15处空白，每处空白给出4个选项，请根据短文的内容从4个选项中选择1个最佳答案，涂在答题卡相应的位置上。
Water
From the beginning, water has furnished man with a source of food and a highway to travel upon. The first______（51） arose where water was a dominant element in the environment, a challenge to man's ingenuity. The Egyptians invented the 365-day calendar______（52） the Nile's annual flooding, The Babylonians, who were among the most famous law-makers in ancient times, invented laws______（53） water usage. Water inspired the Chinese to build a 1,000-______（54） canal, a complex system which, after nearly 2,500 years, remains still practically______（55）and still commands the astonishment of engineers. But the______（56） never found complete solutions to their water problems. The Yellow River is also known______（57） "China's Sorrow"; it is so unpredictable and dangerous______（58） in a single flood it may cause a million______（59）. Floods slowed the great civilization of the Indus River Valley, and inadequate drainage ruined______（60） its land. Today water dominates______（61） as it always has done. Its presence continues to______（62） the location of his homes and cities; its violent variability can______（63） man or his herds or his crops; its routes links him______（64） his fellows; its immense value may______（65） to already dangerous political conflicts. There are many examples of this in our own time.
51 A governments B cultures C civilizations D universities
52 A in regard to B in response to C in case D in spite of
53 A regulates B regulate C regulated D regulating
54 A miles B mile C mile's D miles'
55 A in use B for use C by use D on use
56 A villagers B ancients C farmers D merchants
57 A for B by C to D as
58 A that B when C because D which
59 A injuries B deaths C damages D ruins
60 A a number of B a couple of C many of D much of
61 A woman B women C man D men
62 A govern B control C lead D change
63 A move B violate C kill D disappear
64 A by B on C and D to
65 A increase B add C expand D extend

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