题目

The advantages and disadvantages of a large population have long been a subject of discussion among economists.It has been argued that the supply of good land is limited.To feed a large population,poor land must be cultivated (耕种) and the good land worked intensively (精耕细作).Thus,each person produces less and this means a lower average income than could be obtained with a smaller population.Other economists have argued that a large population gives more chance of development of facilities such as ports,roads and railways,which are not likely to be built unless there is a big demand.
One of the difficulties in carrying out a worldwide birth control program lies in the fact that official attitudes to population growth vary from country to country depending on the level of industrial development and the availability of food and raw materials.In the developing country where a vastly expanded population is pressing hard upon the limits of food,space and natural resources,the first concer

提问时间：2020-07-13

答案

A C B B C