Which of the following best reflects the main idea of the article?
A.What happens to the victims of crime?
B.Is your family safe?
C.Should you arm yourself against crime?
二、主题思想应能恰如其分地概括文中所阐述的内容。面不能太窄，即：不足以概括全部内容;但是面也不能太宽，即：包含了文中没有阐述的内容。例三：
Directions：Read the following and choose the title that best expresses the ideas of the passage.
There is a simple economic principle used to determine prices.It is called the law of supply and demand.Supply means the amount of，or access to，certain goods.Demand represents the number of people who want those goods.If there are more goods than wanted，the price of them falls.On the other hand，if the demand for those goods is much greater than the supply， then the price rises.Of course，manufacturers prefer to sll more goods at increased price.
A.Economic Principles
B.Law of Supply and Demand
C.M ore Goods，Lower Prices
D.Fewer Goods，Higher Prices
该问题，A泛指经济规律，面过宽;C和D只是供需规则的二个单独的方面，不能包含全部，面太窄。正确的答案是B，因为这正是该短文自始至终谈论的主题
三、一段文章的中心思想常常由主题句(Topic Sentence)表达。主题句常常位于段首或段尾处，间或出现在段落中间。同样，一篇文章的中心思想也常常在开始或结尾段点出。因此在阅读中，我们要特别注意文章的开头或结尾。例四：
English is clearly an international language.It is spoken by pilots and airport control operators on all the airways of the world.Over 70 percent of the world's radio programs are in English.
本段主题句为首句，其后的内容句均说明首句。例五：
Some students prefer a strict teacher who tells them exactly what to do.Others prefer to be left to work on their own.Still others like a democratic discussion type of class.No one teaching method can be devised to satisfy all students at the same time.
本段中心思想在结尾句得到体现，它是此段内容的结论。例六：
For adults a cold is not that serious.However，this is not the case for children.Cold symptoms in children may be signs of more serious diseases and should be given prompt medical attention.