1-C is for currency
<p>How recent the information should be?
-Select articles published within the last five years.
-Exceptions: Use historical materials or cite earlier theories to support
your point of view.</p>
<p>
这些信息应该有多新？
-选择在过去五年内发表的文章。
-例外情况：使用历史资料或引用早期的理论来支持你的观点。</p>