A. It helps develop our personalities. B. It enables us to acquire first-hand knowledge. C. It makes our life more interesting. D. It brings about changes in our lifestyle. 参考答案:B 答案解析:主旨题。文章中从开始就说到旅游的目的之一是教育,获取这种教育的方式在后面才提到:on a trip,a person can learn directly,与选项[B]中的acquire first-
A. limit B. scarcity C. confinement D. restriction 参考答案:B 答案解析:[题解] 单词scarcity:缺乏;不足;缺少。单词limit:界限;边界;限度;限制。单词confinement:限制;被禁闭;分娩。单词restriction:限制;限定;约束。