Since the beginning of human evolution, men have migrated（迁移）across continents in search of food, shelter, safety, and comfortable weather. People still move for these reasons, but new reasons for human migration are arising, such as job relocation(重新安置) and overpopulation.
    Three million migrants are moving from poor countries to wealthier ones each year, and increasingly, their destination is a neighboring country in developing parts of the world. People are moving within the developing world for the same reasons as they migrate to wealthier nations. People from poor countries are going to less poor countries, fleeing wars and conflicts. They are also responding to population pressures because some countries are densely populated, and they often have high population growth. Those people need to go somewhere else.
    There are three main reasons why people move. The basic categories and percentages are as follows, according to the Current Population Surveys (CPS):
    Family-related reasons account for 26.3%, including changes in marital（婚姻的） status, establishing a household and other family reasons; work-related reasons 16.2%, including job transfer, retirement, and other job-related reasons; housing-related reasons 51.6%, including new and better houses, better neighborhood, cheaper housing and other housing reasons; the remaining 5.9% of other reasons are attending college, the change of climate and health reasons.
    Americans have been migrating south and west for decades in search of better job opportunities and warmer climates. They have also been moving to places a little far from cities, in search of bigger yards and houses, lower crime rates and better schools. In 1950, nearly a fifth of the population lived in the nation’s 20 largest cities. In 2006, it was about one in ten. That’s why many American people say, “Big Cities Shrink as People Move South, West.”
    Between March 2005 and March 2007, 73.4 million Americans moved. Fifty-six percent of these moves were within the same country. Twenty percent were between counties but in the same state. Nineteen percent were moves to a different state. Some families even went abroad.
Title: People on the   71 

下面是21世纪报中学生英语双语版 (Student Times )刊登的一封读者来信，请你以编辑Henry的身份给这位中学生写封回信。

Dear editor,

I am a new student in Xin Hua Middle School. I hardly talk to my classmates. Sometimes I do want to talk, but I don’t know what to talk about and how to begin a conversation. I feel so lonely. And I spend most of my time studying but I find it’s more difficult and tiring than before, especially spoken English.

Could you give me some advice?

Yours,

Tom

注意：回信的内容包括以下要点，可适当增减细节

1保持微笑，这在与人相处中很重要；

2与同学们友好相处，多交流相同爱好或相互讨论学习问题；

3英语越来越重要；学好语言需要有信心，多开口说；

4可以通过多种方式，如……，让校园生活丰富多彩。

词数120左右。信的开头已写好，不计入总词数。

参考词汇：自信的 confident adj.

丰富多彩的 colorful　 adj.

Dear Tom,

Your problem is a common one among middle school students. Maybe the following advice can help you………

　　　　　　　　　　　　 　　　　　　　　　　　　　　　　　　　　 .

yours

Henry