单选题
What methods have been taken by the developing countries to encourage trained personnel to return?
A、
To fine those who do not come back.
B、
To set up special "return" programs.
C、
To ask for help from the International Organization for Migration.
D、
To require the developed countries not to offer jobs to those who do not return.
【正确答案】
B
【答案解析】
根据文章第三段可知拉丁美洲国家采取了措施鼓励学成者回国工作，这项措施还得到了诸如国际移民组织这样的国际机构的支持。[A]和[D]文章并未提及。[C]与文意不符，鼓励学成者回国的措施得到国际机构的支持，并不是这些国家直接向国际机构寻求帮助。
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