第三段进一步分析原因。74空应该是个细节句，详细阐明男生比女生表现差的原因。这里我们不难找到答案F。

　　第四段说明这种现象的普遍存在。段尾的75空是一个接续前句的细节句。浏览剩余的选项，我们很肯定地找到答案B。

　　【实战演练练习十三】（05 江西卷 E 篇）

　　Do you have any strong opinion on co-educational or single-sex schools?

　　A supporter of co-educational schools would probably say that schools should be like the societies they belong to .In Hong Kong, men and women mix socially on a day-to-day basis .In many fields men are even likely to have female bosses. It is, therefore, desirable that boys and girls grow up together, go to school together, and prepare themselves for a society that does not value sexual separation.

　　Some would go on to argue further that growing up with members of the opposite sex is important for personal development. Regular contact（接触）can remove the strange ideas about the opposite-sex and lead to more natural relationships. Single-sex conditions are seen as leading to more extreme opinions, and possibly even as encouraging homosexuality（同性恋）, though there is no proof that this is the case.

　　Those who are against coeducation often also fix their attention on the sexual side. Some parents fear that close contact with members of the opposite sex is dangerous for teenagers. They want their children to be attentive to their studies. Such parents feel uncomfortable with modern ways and the free mixing of the sexes.

　　A stronger argument comes from research into school results. Girls grow up earlier than

　　boys ,tend to be more orderly and are likely to be better at languages. In a mixed class ,boys who might do well in a single-sex class become discouraged and take on the rule of troublemaker. Certainly in the UK this situation has greatly alarmed （惊动）the government for it to be encouraging co-educational schools to have some single-sex classes. In the UK the best schools are all single-sex, strongly suggesting that co-education is not the best answer. This may, however, not be as simple as it looks. It may simply be that the famous old schools that attract the best students happen to be single-sex, rather than that being single-sex makes them better schools.