11．The world's population is more mobile （移動的）today than ever before．In 2010，more than 200million people left their home countries to live in a new country．This is about 3percent of the total world population．Some experts believe that number will swell to 400million by 2050．Rates of immigration have remained strong for the last 300years，but patterns of immigration have changed since World War II．The backgrounds and experiences of today's immigrants are different from those of the typical European immigrant of the nineteenth and early twentieth centuries．Contemporary immigrants range from unskilled laborers to highly skilled professionals，and they come from and go to countries all over the world．
In the nineteenth century and until World War II，immigration was primarily in one direction-from the Old World to the New World．This is no longer the case．Countries such as Russia and China，which have long been，and continue to be，significant source countries，are now also destination countries．There is also considerable mobility inside regions，such as from one European country to another，or among the countries of the former Soviet Union．
In spite of such differences，the push and pull factors for immigration remain essentially the same as they were 100years ago．Most people move to another country because they want a better life．For the majority of immigrants，this means better economic conditions．As in past generations，a labor shortage in one country often draws workers from another country，especially if wages are significantly higher．In some small countries，for example，Qatar，United Arab Emirates，and Kuwait，there are more jobs than citizens．The demand for labor is so high that the majority of the population consists of foreign-born workers，ranging from highly skilled engineers and financial experts to domestic and construction workers．
In traditional destination countries，such as the United States，however，labor needs have changed．Today，although there is still demand for unskilled labor，there is increasing demand for people with a high level of skill and education．The need for less skilled labor has shifted to other countries．As work on farms and in industry in the United States and Canada once drew workers from all over the world，now work in factories in Taiwan and south Korea attracts workers from Vietnam，the Philippines，and Cambodia．
Most global immigration is legal：however，a large number of people also move across national borders illegally in pursuit of（尋找） employment．Experts estimate that about 15to 20percent of immigrants worldwide are in their new countries illegally．The United States has the largest number of these immigrants，followed by South Africa，with significant numbers also in Northern and Western Europe and Mexico．These immigrants face particular challenges because they often must hide from the authorities who might deport them back to their home countries．Their illegal status also means that employers may take advantage of them by forcing them to work longer hours and paying them less than the legal minimum wage．
Although economics remains the most important motivation in all forms of immigrant，other factors are also important．Some people decide to leave their home countries because their actions or political beliefs make it dangerous for them to remain．Others choose to leave because their home country has become too dangerous and unstable，often because of war or political unrest．They wish to find a place that is secure for themselves and their families．Education is also a significant factor for many modern immigrants．They want to raise their children in a place where they can get a good education，which，in turn，they hope will provide them with better prospects for the future．Finally，family and community ties also play a role in immigration decisions．As in the past，once a group of people from one country establishes a community in a new country，more people from that country is like ly to follow．
The pattern，direction，and rate of immigration may change as the global economy changes．However，as long as life in a new country is more attractive than life in the old country，immigration will continue．
67．According to the reading，what are the patterns of immigration in China and Russia today？A
A．Many people leave these countries while many people also immigrate to them．
B．They are major source countries for immigration．
C．They are major destination countries for immigrants．
D．Some people immigrate to these countries but many more people leave them．
68．Why is the percentage of foreign-born workers so high in Kuwait，Qatar，and the United Arab Emirates？B
A．These countries pay very high wages，so they attract many foreign workers．
B．There are not enough native-born workers in these countries so they must recruit workers from other countries．
C．It is very easy to immigrate to these countries．
D．These countries are very stable so many workers prefer to go there．
69．Why do some employers sometimes pay illegal immigrants less than the legal minimum wage？A
A．Employers know that they will not complain about their wages to authorities．
B．They often do not speak good English．
C．Authorities might send illegal immigrants back to their home country．
D．Illegal workers often cause problems for employers．
70．Which is not the factor contributing to the immigration？C
A．Education
B．Political instability
C．Religious freedom
D．Family and community connections．
分析 本文主要寫了當今世界人口的遷移比過去增多了，外來勞動力增加，但是也出現了非法移民的問題．
解答 67．A 細節理解題．由第二段中的"Countries such as Russia and China，which have long been，and continue to be，significant source countries，are now also destination countries"可知，當前，在中國和俄羅斯，很多人移民到別的國家去，同時，又有很多人移民到這兩個國家來．故A選項正確．
2．B 細節理解題．由第三段中的"As in past generations，a labor shortage in one country often draws workers from another country，especially if wages are significantly higher．In some small countries，for example，Qatar，United Arab Emirates，and Kuwait，there are more jobs than citizens．The demand for labor is so high that the majority of the population consists of foreign-born workers，ranging from highly skilled engineers and financial experts to domestic and construction workers"可知，這些國家缺乏勞動力，工資報酬高，所以吸引了大量外來工人．故B選項切題．
3．A 細節理解題．由倒數第三段中的"These immigrants face particular challenges because they often must hide from the authorities who might deport them back to their home countries．Their illegal status also means that employers may take advantage of them by forcing them to work longer hours and paying them less than the legal minimum wage"可知，這些非法移民一旦被當局發現，就會被遣返回國．一些雇主正是利用這一點，強迫這些非法移民多工作，少付給他們工資．A選項正確．
4．C 細節理解題．由最后一段可知，economics、actions or political beliefs、Education、Political instability、family and community ties都是造成移民的因素．故用排除法，C選項切題．
點評 本文考查細節題為主，細節題可以在文章中直接找到與答案有關的信息？或是其變體．搜查信息在閱讀中非常重要它包括理解作者在敘述某事時使用的具體事實、數據、圖表等細節信息．在一篇短文里大部分篇幅都屬于這類圍繞主體展開的細節．做這類題一般采用尋讀法？即先讀題，然后帶著問題快速閱讀短文，找出與問題有關的詞語或句子，再對相關部分進行分析對比，找出答案．
