词汇：
mentor v. 指导
undocumented adj. 无文件证明的
abate v. 减弱
amnesty n. 大赦
注释：
1.roundup是“逮捕”、“捕捉”。
2.get tough是“决心采取严厉的措施”。
3.brain drain是“人才枯竭”。
练习：
1. Many immigrants swarmed into streets in the US in early 2006, demanding that they should be treated as
A) animals.
B) citizens.
C) civilians.
D) criminals.
2. Some Canadian officials want to keep the door open because
A) Canada is in desperate need of talented people.
B) Canada can feed a much larger population.
C) Canada is suffering from labor shortage.
D) Canada is a multicultural country.
3. What has the Spanish Government decided to do?
A) Help immigrants find proper jobs.
B) Let immigrants freely enter the country.
C) Integrate immigrants into the Spanish culture.
D) Take tough measures against illegal immigration.
4. After France's new immigration and integration law takes effect, it will
A) lure overseas students back home.
B) undermine the unity of the country.
C) drain developing countries of talent.
D) induce resentment among the French workers.
5. The phrasal verb rounding up in paragraph 1 could be best replaced by
A) capturing.
B) encircling.
C) separating.
D) frightening.