Ⅰ.阅读理解
A
When Ann Kahn was growing up，her family took the same summer vacation every year—a trip to Yosemite (约塞米蒂国家公园)．But things are different for her daughter，Ashley.At 19，Ashley had already set foot on every continent including Antarctica，and all but one of her journeys abroad were taken without her parents，on trips with other teenagers.She started when she was just 13，visiting Europe with a youth travel organization called People to People Students Ambassadors(大使)．
