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问题 单项选择题

Rohrer反映了人体生长发育的哪一方面的特征

A．反映体重与身高的比例关系
B．反映胸廓发育状况，说明人体形
C．反映人体躯干和下肢比例
D．反映单位体积的充实程度
E．反映体形的胖瘦程度，受身高影响小

答案

参考答案：D

单项选择题

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 US 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.

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

A．Political boundaries.

B．Transportation networks.

C．Social relationships.

D．Economic systems.
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判断题

自2000年1月1日起建立新的检验检疫货物通关制度，实施“先报检，后报关”的通关模式。
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