题目内容
Will the brain () when a person grows old? Unfortunately, the answer is yes.
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The postal administration () commemorative stamps every year to honor heroes of the nation.
There is no immediate () of peace. People living at the boarders will have to continue suffering.
She didn't like the () of living alone, and that is why she adopted a child from Vietnam.
This system is extremely () because it runs on half price electricity.
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