(3)找出各个段落的主题句。主题句有以下几个特征：①它是概括全段思想的句子；②一般出现在段首，其次是段尾，有的出现在段落当中；③它表达的是观点，而不是事实。

　　(4)注意由in summary，in a word，as a result，finally，in short，in conclusion和in brief等“信号词”引导的句子。

　　(5)正确选项的特点：不出现细节信息；不含过分肯定或绝对意义的词。

　　(6)干扰项特点：细节信息明显；过于笼统。

　　实例透析1．(2011·安徽卷·D)

　　Ireland has had a very difficult history.The problems started in the 16th century when English rulers tried to conquer (征服) Ireland.For hundreds of years，the Irish people fought against the English.Finally，in 1921，the British government was forced to give independence to the south of Ireland.The result is that today there are two “Irelands”．Northern Ireland，in the north，is part of the United Kingdom.The Republic of Ireland，in the south，is an independent country.

　　In the 1840s the main crop，potatoes，was affected by disease and about 750,000 people died of hunger.This，and a shortage (短缺) of work，forced many people to leave Ireland and live in the USA，the UK，Australia and Canada.As a result of these problems，the population fell from 8.2 million in 1841 to 6.6 million in 1851.

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