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The country has an aging population and asevere ( ) of youngworkers.
A. failure
B. shortage
C. absence
D. Rich
B. shortage
C. absence
D. Rich
参考答案
参考解析
解析：根据句意，这个国家人口老龄化严重，年轻工人严重短缺。B项符合，C项意为缺席。
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