2. 外语
  3. 　　During the 1980s,unemployment and underemployment in some countries was as high as 90 percent. Some countries did not 【21】____

　　During the 1980s,unemployment and underemployment in some countries was as high as 90 percent. Some countries did not 【21】____

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问题 　　During the 1980s,unemployment and underemployment in some countries was as high as 90 percent.
Some countries did not 【21】______ enough food; basic needs in housing and clothing were not 【22】______ Many of these countries looked to the industrial processes of the developed countries 【23】______ solutions.
　　 【24】______ , problems. cannot always be solved by copying the industrialized countries . Industry in the developed countries is highly automated and very 【25】______ . It provides fewer jobs than labor-intensive industrial processes, and highly 【26】______ workers are needed to 【27】______ and repair the equipment. These workers must be trained 【28】______ many countries do not have the necessary training institutions. Thus, the 【29】______ of importing industry ecomes higher. Students must be sent abroad to 【30】______ vocational and professional training. 【31】______ ,just to begin training, the students must 【32】______ learn English, French, German,
or Japanese. The students then spend many years abroad, and 【33】______ do not return home.
　　All countries agree that science and technology 【34】______ be shared. The point is: countries 【35】______ the industrial processes of the developed countries need to look carefully 【36】______ the costs, because many of these costs are 【37】______ . Students from these countries should 【38】______ the problems of the developed countries closely. 【39】______  care, they will take home not the problems of science and technology, 【40】______ the benefits.
【28】
选项 A、since
B、so
C、and
D、yet
答案D
解析 yet最常用的是副词形式相当于already“已经”，用于疑问句和否定句中，如：Has John arrived yet?约翰来了吗?但是在这里却是用做连词，表示“但是，然而”。本句意为这些工人必须培训，然而，那些国家却没有必须的培训费。故应选D。
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