According to the first paragraph, which of the following is NOT a problem of aging? Soical Security in the U.S. is increased __

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问题 According to the first paragraph, which of the following is NOT a problem of aging?
Soical Security in the U.S. is increased ______.

选项 A、before inflation occurs
B、automatically as the living cost rises
C、automatically as the living cost drops
D、at the request of retired people

答案B

解析
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