单选题 What do we learn from the last Paragraph?

A、 If we focus our attention on one tiring, we might forget another.
B、 Memory depends to a certain extent on the environment.
C、 Repetition helps improve our memory.
D、 If we keep forgetting things, we'd better return to where we were.

【正确答案】 A

【答案解析】[分析] 逻辑推论题。依据最后一段第一行，第二行，“…walking into a room and wondering why you've there．Most likely，you were thinking about something else”。可以确定A项正确。具有干扰度的选项是B、D两项。B项本身并不错，但这是文章第三段的内容。D项主要是条件不符合要求。