单选题 The fact that most Americans live in urban areas does not mean that they reside in the center of large cities. In fact, more Americans live in the suburbs of large metropolitan areas than in the cities themselves.
The Bureau of the Census regards any area with more than 2,500 people as an urban area, and does not consider boundaries of cities and suburbs.
According to the Bureau, the political boundaries are less significant than the social and economic relationships and the transportation and communication systems that integrate a locale. The term used by the Bureau for an integrated metropolis is an MSA, which stands for Metropolitan Statistical Area. In general, an MSA is any area that contains a city and its surrounding suburbs and has a total population of 50,000 or more.
At the present time, the Bureau reports more than 280 MSAs, which together account for 75 percent of the U.S. population. In addition, the Bureau recognizes 18 megapolises, that is, continuous adjacent metropolitan areas. One of the most obvious megapolises includes a chain of hundreds of cities and suburbs across 10 states on the East Coast from Massachusetts to Virginia, including Boston, New York, and Washington D. C. In the Eastern Corridor, as it is called, a population of 45 million inhabitants is concentrated. Another megapolis that is growing rapidly is the California coast from San Francisco through Los Angeles to San Diego.

单选题 Which of the following is the best title for the passage?

单选题 According to the passage, where do most Americans live?

【正确答案】 B

【答案解析】[解析] 本题考查细节理解。根据文章第一段第二句“…more Americans live in the suburbs of large metropolitan areas than in the cities themselves.”可知，更多的美国人生活在大都市的郊区，metropolitan意为“大城市的”。所以，答案是B。

单选题 The underlined word "reside" in Paragraph 1 is closest in meaning to ______.

【正确答案】 D

【答案解析】[解析] 本题考查词义辨析。根据文章第一段第一句“The fact that most Americans live in urban areas does not mean that they reside in the center of large cities.”可知，大多数美国人生活在城区并不意味着他们都居住在市中心。分析句子结构可知，reside应和live是同义词。reside“居住”；fill“填满”；decide“决定”；occupy“占据”；live“生活”。所以，答案是D。

单选题 According to the Bureau of the Census, what is an urban area?

单选题 Which of the following are NOT considered important in defining an urban area?

【正确答案】 A

【答案解析】[解析] 本题考查细节理解。根据第三段第一句话“According to the Bureau，the political boundaries are less significant than the social and economic relationships and the transportation and communication systems that integrate a locale.”可知，统计局认为，与社会和经济关系和交通通信系统相比，政治界限不太重要。据此可知，答案是A。

单选题 The underlined word "integrate" in Paragraph 3 is closest in meaning to ______.

【正确答案】 C

【答案解析】[解析] 本题考查词义理解。根据语境可知，社会和经济关系和交通通信系统可以将一个场所联系起来。Integrate“使成整体，使一体化”；benefit“受益于”；define“下定义”；unite联合，团结；restrict“限制，约束”。所以，答案是C。

单选题 Which of the following is NOT true?

【正确答案】 C

【答案解析】[解析] 本题考查是非判断。根据第三段第二、三句“The term used by the Bureau for an integrated metropolis is an MSA, which stands for Metropolitan Statistical Area. In general, an MSA is any area that contains a city and its surrounding suburbs and has a total population of 50, 000 0r more.”可知，A、B、D三项在文中一一提到，均正确。只有C项在文中没有相关支持信息，故不正确。所以，答案是C。

单选题 The underlined word "adjacent" in the last paragraph is closest in meaning to ______.

【正确答案】 A

【答案解析】[解析] 本题考查词义理解。根据文章第四段第二句可知，megapolises是连续的毗邻的都市地区。Adjacent“邻近的，接近的”．beside each other“靠边”；growing very fast“发展迅速”；the same size“一样大”；densely populated“人口密集”。据此可知，答案是A。

单选题 According to the passage, what is a megapolis?

单选题 Why does the author mention the Eastern Corridor and the California coast in Paragraph 4?

【正确答案】 A

【答案解析】[解析] 本题考查细节理解。根据文章第四段的“the Bureau reports more than 280 MSAs, which together account for 75 percent of the U.S. population”，可知75%的人住在MSA, 但不单是the Eastern Corridor, Califomia coast地区，因而排除B；第四段是对megapolis的介绍，不是对文章的总结，排除C；D项在文中并未提及。