在阅读理解中，假若有两个选项A和B，A可作为论据支持说明B，或者说是，因为A所以B，那么，B就是正确答案

此命名为“A支持B原则”

需要注意的是

在对选项之间的支持关系进行判断时，勿须深究逻辑的严谨性，只要说得通即可

请看下面的例子

2010年Text2第30题

Which of the following would be the subject of the text?

A. A looming threat to business-method patents

B. Protection for business-method patent holders

C. A legal case regarding business-method patents

D. A prevailing trend against business-method patents

此题中，AD之间的关系可理解为：因为D所以A

即，因为有“A prevailing trend against business-method patents”，所以说是“A looming threat”

所以正确答案是A

2007年Text2第28题

People nowadays can no longer achieve IQ scores as high as vos Savant’s because

A. the scores are obtained through different computational procedures.

B. creativity rather than analytical skills is emphasized now.

C. vos Savant’s case is an extreme one that will not repeat.

D. the defining characteristic of IQ tests has changed

此题中，ABD之间的关系可理解为：因为BD所以A

即，因为B中的“今天强调创造力”和D中的“智力测试特点的定义已改变”，所以有A中的“成绩用不同的计算方法”

所以正确答案是A

2001年Text4第64题

According to the author, one of the driving forces behind M&A wave is ________.

A. the greater customer demands

B. a surplus supply for the market

C. a growing productivity

D. the increase of the world’s wealth

此题中，AD之间的关系可理解为：因为D所以A，即因为“财富增加”所以“客户需求更大”;BC之间的关系可理解为：因为C所以B，即因为“生产力增长”所以“供给过剩”

所以，正确答案在AB中选择，排除CD

【正确答案是A】