63．C 主旨大意题。通读全文可以看出笔记本是贯穿始终的线索，因此用A Valuable Notebook作标题最适合文意；A、B、D三项所述内容涵盖范围过大。
64．B 细节理解题。第二段中“for the purpose of serving society and meeting other social communities”说明了Susan山区之行的目的，因此选B。
65．A 细节理解题。从第三段中“We had known ahead of time that their English was rather poor.And what was worse，they didn’t like learning English.”可知A项表述正确；B、D两项表述与文章内容相悖；C项文章中未提到。
