单选题 The tradition of hospitality to strangers ______.

A、 tends to be superficial and artificial
B、 is generally well kept up in the United States
C、 is always understood properly
D、 has something to do with the busy tourist trails

【正确答案】 B

【答案解析】[详细解答] 文章第四段第二句说“Yet，the old tradition of hospitality to strangers is still very strong in the US”(美国人的好客传统至今仍然盛行不衰)，这与选项[B]“在美国大体上保持完好”的意思一致，故为正确答案。