Question

As people slowly learn to cure diseases, control floods, prevent hunger, and stop wars, fewer people die every year. As a result, the population of the world is becoming larger. In 1925 there were about 2 billion people in the world; today there are over 6 billion.
When the number rises, extra mouths must be fed. New lands must be brought under development, or land already farmed must be made to produce more crops. In some areas the land is so over-developed that it will be difficult to make it provide more crops. In some areas the population is so large that the land is divided into too tiny units to make improvement possible with farming methods. If a large part of this farming population went into industrial work, the land might be farmed much more productively (多产地) with modern methods.
There is now a race for science, technology, and industry to keep the output of food rising faster than the number of people to be fed. New types of crops, which will grow well in bad weather, are being developed, so there are now farms beyond the Arctic Circle in Siberia and North America. Irrigation (灌溉) and dry-farming methods bring poor lands under the plough. Dams hold back the waters of great rivers, which can provide water for the fields in all seasons and provide electric power for new industries. Industrial chemistry provides fertilizer to suit different soils. Every year, some new methods are made to increase or to protect the food of the world.
【小题1】The author says that the world population is increasing because _____.

A．there are many rich valleys and large fields

B．farmers are producing more crops than before

C．people are living longer due to better living conditions

D．new lands are being made into farmlands

【小题2】The author says that in areas with large populations, land might be more productively farmed if _____.

A．the land was divided into smaller pieces

B．people moved into the countryside

C．industrial methods were used in farming

D．the units of land were much larger

【小题3】We are told that there are now farms beyond the Arctic Circle. This has been made    possible by _____.

A．growing new types of crops	B．irrigation and dry-farming means
C．providing fertilizers	D．destroying pests and diseases

【小题4】 Why do some people use dams to hold back waters from great rivers?

A．To develop a new kind of dry-farming methods.

B．To prevent crops from floods.

C．To provide water and electricity in all seasons.

D．To water poor lands in bad weather.

Answer 1

【小题1】C
【小题2】C
【小题3】A
【小题4】C

解析试题分析：
【小题1】细节题。由第一段的As people slowly learn to cure diseases, control floods, prevent hunger, and stop wars, fewer people die every year. As a result, the population of the world is becoming larger.可知答案选C。
【小题2】细节题。由第二段的In some areas the population is so large that the land is divided into too tiny units to make improvement possible with farming methods. If a large part of this farming population went into industrial work, the land might be farmed much more productively (多产地) with modern methods.可知如果当地形成工业性作业，土地就由于现代化的方法而多产。故选C。
【小题3】细节题。由第三段的New types of crops, which will grow well in bad weather, are being developed, so there are now farms beyond the Arctic Circle in Siberia and North America.可知由于新型农业的出现，才导致了北极圈内的地区出现了很多的农田。故选A。
【小题4】细节题。由最后一段的Dams hold back the waters of great rivers, which can provide water for the fields in all seasons可知答案选C。
考点：这是一篇健康保健类文章。
点评：文章在首段通过介绍随着生活水平的提高，世界人口越来越多，对于农业要求就越来越高引出了文章的主题When the number rises, extra mouths must be fed. New lands must be brought under development, or land already farmed must be made to produce more crops。在下文中介绍了通过一些新的农耕的方法来提高农业产量，维持人类的生存问题。带着问题，通读全文，找出问题的答案。