由最后一段的倒数第二句话“You must also keep an open eyes on its date of publication because travel is very practical matter and many things change quickly in the 21st century.”可知出版的日期要注意，因为在21世纪的今天，很多事情的变化很快，故答案选D。
stay at home呆在家go to the beach去海滩 visit museums 参观博物馆 go to summer camp去参观夏令营 3. study for tests为考试而学习\备考 go out出去。
初二英语知识点:不定代词，定语后置，作主语谓语单数。初二英语知识点:few 与 little，a few与few，little 与a little 的用法，这个英语知识点也是必须掌握的!初中英语高频考点，初一至初三都涉及。
