单项选择题

Migrant(移民的)Workers In the past twenty years，there has been an increasing tendency for workers to move from one country to another．While some countries have restricted most ________ (51)to local people，others have attracted and welcomed migrant workers．This is particularly the case in the Middle East，________ (52)increased oil incomes have enabled many countries to call in outsiders to improve local facilities．Thus the Middle East has attracted oil．workers ________ (53)the U．S．A．and Europe．It has brought in workers from many countries, ________ (54) South Korea and Japan． In view of the difficult living and working ________ (55)in the Middle East，it is not surprising that the pay is high to attract suitable workers．Many engineers and technicians call ________ (56)at least twice as much money in the Middle East as they Can in their own country, and this is a major ________ (57)． Sometimes a disadvantage has a compensating(补偿的)advantage．For example，the ________ (58)living conditions often lead to increased friendship when workers have to________ (59)on each other for safety and comfort．In a similar way, many migrant workers Can save large sums of money partly because of the________ (60)of entertainment facilities．The work is often complex and full of problems but this merely ________ (61) I greater challenge to engineers who prefer to find solutions to problems rather than do routine work in their home country． One major problem which ________ (62) migrant workers in the Middle East is that their jobs are temporary ones．They are nearly always on ________ (63)，so it is not easy for them to plan ahead with great confidence．This is to be ________ (64) since no country welcomes a large number of foreign workers as permanent residents．In any ________ (65),migrant workers accept this disadvantage，along with others，because of the considerable financial benefits which they receive．

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