【正文】
mes.Differential ageing of populations also leads to international migration. The more aged populations of the developed countries are inevitably attracting younger migrant workers from less developed countries. All countries of the European Union, for example, are faced with growing international migration and growing ethnic diversity of populations. These have bee thorny political topics, especially with the emergence of terrorism and militant religious fundamentalism. The impact of international migration may be one of the major consequences of ageing populations during the 21st century.ReferencesHaub, C. (2005). 2005 world population data sheet. Washington, DC: Population Reference Bureau. Retrieved October 26, 2011,from United Nations (2005). World population prospects: The 2004 revision,highlights (). New York:United Nations, Department of Economic and Social Affairs, Population Division. Retrieved October 26,2011,from : John I. Clarke is an emeritus professor of geography at the University of Durham, and has written and edited many books about Population geography.Andrew Craven is research director at software consultancy SQS Solutions.Source: Adapted from Clarke, J. L,amp。Craven, A. (2006). Growing grey. (2), 1013. Reproduced by permission of Philip Allan Updates.Text Growing grey, Text 4a (Reading texts pp. 150155)Text 4a is an article from the Geography Review on issues related to an ageing population.Focus taskYour reading purpose for Tasks 13 is to carry out reading research on the basis of pleting an essay entitled:The population of the world is ageing. What impact will this phenomenon have on society?Imagine that in the process of your research you will read the text Growing grey in the Geography Revie,、一you grill then make notes that could be used to write a short summary for use in pleting the essay.As you work through Task引一3, think about how you would write this essay.Task 1 Considering the title and the introduction Consider your own view of the impact of an ageing world population. Discuss your view with another student. Analyse the title.a the title Growing grey make you feel that the text may he useful to you?b Discuss your views with another student. Read and evaluate the short opening summary to the article.a Select cme ,entenre you think is the most relevant to your rending purpose.B Explain、cur chalice to another student.Task 2 Considering subheadings and displayed information Text 4a contains quite a lot of displayed information. Apart from the title,there are six subheadings, one photograph and three figures (maps). This information can help you predict the content of the text. Read the subheadings in the table. In the right column, write down what y