问题 选择题

读图回答19—20题

小题1:若图示意某日甲、乙、丙、丁、戊五地的夜长情况,则五地中 (  )

A.纬度最高的是丙地

B.甲与戊纬度数值相同

C.丁地夜长与乙地昼长相同

D.该日丁与丙正午太阳高度相等小题2:若图示意某地一年中甲、乙、丙、丁、戊五日的夜长情况,且甲日为6月22日,则表示12月22日的是(   )

A.乙

B.丙

C.丁

D.戊

答案

小题1:B

小题2:D

本题考查昼夜长短变化。

小题1:根据同一日期,五地的昼夜长短分布判断,A项丙地昼夜等长,故为赤道,纬度最低。错误。B项甲地的昼长与戊的夜长相同,故判断甲戊两地为不同半球纬度相同的两地;正确。C项丁地夜长约18小时,而乙地昼长约16小时,不相等;错误。D项由于此日的太阳直射点位置和丁地的纬度位置不确定,故两地的正午太阳高度无法比较。

小题2:同一地方,夏至日的昼长与冬至日的夜长相等,故判断12月22日为戊地。

填空题
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.

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

A.benefit

B.define

C.unite

D.restrict