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 (限制) most____________.(51) to local people, others have attracted and welcomed migrant workers.This is partiicularly the case in the Middle East,____________(52) increased oil incomes have enabled many countries to call in outsiders to improve local facilities (设施). Thus the Middle East has attracted oil-workers(53) the U.S.A. and Europe. It has also brought in workers from many other 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 can____________(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____________.(56) 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 (娱乐) facilities. The work is often complex and full of problems but this merely presents greater challenge to engineers who prefer to find solutions to problems rather than de____________(61) 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. 第 51 题A.actsB.jobsC.activitiesD.uses
单项选择题 A.taught B.believed C.tried D.allowed
未知题型 越冬鲤身体两侧和腹部鳞片脱落、出血发炎,鳍基部充血,蛀鳍,上下颌及鳃盖部分充血发红。该病最可能的病原是()
未知题型 微孢子虫寄生于对虾的主要部位是()