A. Something first remembered by the brain.

　　B. Something considered to be important by the brain.

　　C. Something reviewed by the brain during the night.

　　D. Something appearing in the brain last.

　　48. Which of the following is the correct order of what the volunteers did in the experiment?

　　a. distinguished words simply by their sounds

　　b. recalled the words they had heard at different times of the day

　　c. recalled the words they had heard the next morning

　　d. distinguished words by their sounds and their written version

　　A. abcd

　　B. dacb

　　C. bdca

　　D. dabc

　　49. From the report we can learn that ______.

　　A. memory differs from person to person B. good memory happens in the early morning

　　C. sleep affects memory D. memory fails at the end of a day

　　Passage B

　　【语篇解读】本文为科普文。文章通过对一个实验的介绍说明良好的睡眠有助于恢复“已忘”的记忆。

　　46．C．【解析】事实细节题。文中第二及第九段中均有说明。

　　47．B．【解析】事实细节题。文中第五段有具体说明。

　　48．D．【解析】事实细节题。根据文章对实验的描述可知。

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