17．Although the United States covers so much land and the land produces far more food than the present population needs，its people are by now almost entirely an urban society．Less than a tenth of the people are engaged in agriculture and forestry（林業(yè)），and most of the rest live in or around towns，small and large．Here the traditional picture is changing：every small town may still be very like other small towns，and the typical small town may represent a widely accepted view of the country，but most Americans do not live in small towns any more．Half the population now lives in some thirty metropolitan areas（large cities with their suburbs ） of more than a million people each-a large proportion than in Germany or English，let alone France．The statistics（統(tǒng)計(jì)） of urban and rural population should be treated with caution because so many people who live in areas classified as rural travel by car to work in a nearby town each day．As the rush to live out of town continues，rural areas within reach of towns are gradually filled with houses，so that it is hard to say at what moment a piece of country becomes a suburb．But more and more the typical American lives in a metropolitan rather than a small town environment．
61．If now America has 250million people．how many of them are engaged in agriculture and forestry？C
A．About 25million．
B．More than 25million．
C．Less than 25million．
D．Less than 225million．
62．Which of the following four countries has the smallest proportion of people living in metropolitan areas？C
A．United States
B．Germany
C．France
D．England
63．What's the meaning of the word"metropolitan"in the middle of the passage？A
A．Of a large city with its suburbs．
B．Of small and large towns．
C．Of urban areas．
D．Of rural areas．
64．According to the passage，what can we learn about small towns in the United States？B
A．Most small towns become gradually crowded．
B．Small towns are still similar to each other．
C．As the traditional picture is changing，towns are different．
D．Small towns are turning into large cities．
65．Why is it hard to say when a piece of country becomes a suburb？C
A．Because they are the same．
B．Because the rush takes place too quickly．
C．Because the process is gradual．
D．Because more and more Americans live in metropolitan areas．
分析 文章介紹了美國的城市化問題．
解答 61．C計(jì)算題．根據(jù)第二行Less than a tenth of the people are engaged in agriculture不到十分之一的人從事農(nóng)業(yè)；以及題干中的250 million，可知C正確．
62．C 細(xì)節(jié)題．根據(jù)第七、八行a larger proportion than in Germany or England，let alone France可知美國的城市數(shù)量多與德國，英國，更不要說法國，說明法國的城市數(shù)量最少．故C正確．
63．A 細(xì)節(jié)題．根據(jù)第七行thirty metropolitan areas（1arge cities with their suburbs）大約三十幾個(gè)大都市地區(qū)（包括附近郊區(qū)的大型城市），可知A正確．
64．B 細(xì)節(jié)題．根據(jù)文章第四行every small town may still be very like other small towns小的城鎮(zhèn)之間仍然十分相似，可知B正確．
65．C細(xì)節(jié)題．根據(jù)文章倒數(shù)三、四行As the rush to live out of town continues，rural areas within reach of towns are gradually filled with houses，當(dāng)遠(yuǎn)離城鎮(zhèn)居住的熱潮持續(xù)的情況下，城鎮(zhèn)周圍的鄉(xiāng)村地區(qū)逐漸蓋滿了房屋，可知C正確．
點(diǎn)評(píng) 本文是一個(gè)科教類閱讀理解，題目涉及多道細(xì)節(jié)理解題，做題時(shí)結(jié)合原文和題目有針對(duì)性的找出相關(guān)語句進(jìn)行仔細(xì)分析，結(jié)合選項(xiàng)選出正確答案．推理判斷題也是要在抓住關(guān)鍵句子的基礎(chǔ)上合理的分析才能得出正確答案，切忌胡亂猜測(cè)，一定要做到有理有據(jù)．
