【简答题】阅读理解。 Until the 1980s, the American homeless population comprised (组成) mainly older males. Today, homelessness strikes much younger part of society. In fact, a 25-city survey by the U. S. Conference o...
【简答题】阅读理解。 Kitesurfing as a water sport began in the 1980s, but didn't get popular until the end of last century. It is also known as kiteboarding, and in some European countries as flysurfing. Kitesurfing...