[单选题]Culture differences 【文化差异】 　　People from different cultures sometimes do things that make each other uncomfortable, sometimes without realizing it. Most Americans ___A__1___ out of the country and have very __B___2____ experience with foreigners. But they are usually spontaneous, friendly and open, and enjoy __C__3____ new people, having guests and bringing people together formally or informally. They tend to use first names __D__4____ most situations and speak freely about themselves. So if your American hosts do something that ___A__5___ you uncomfortable, try to let them know how you feel. Most people will _C__6___ your honesty and try not to make you uncomfortable again. And you’ll all __C___7______ something about another culture! 　　Many travelers find _____8__B___ easier to meet people in the U.S. than in other countries. They may just come up and introduce themselves or even invite you over ____9__D_ they really know you. Sometimes Americans are said to be _C___10___. Perhaps it seems so, but they are probably just __A__11____ a good time. Just like anywhere else, it takes time to become real friends __A__12____ people in the U.S.. 　　If and when you ___D__13____ American friends, they will probably _D___14____ introducing you to their friends and family, and if they seem proud ___A__15____ you, it’s probably because they are. Relax and enjoy it! 文章(51~65)
A.have never been
B.have been never
C.has never been
D.has been never