单选题：As careful research reviews show, academic excellence in so

题目内容：

As careful research reviews show, academic excellence in some single-sex schools is attributed to other factors than single-sex education.

参考答案：

答案解析：

Boys from coeducational classes demonstrate greater cogniti

Boys from coeducational classes demonstrate greater cognitive abilities accordi

分类：英语六级题型：单选题

Studies in social psychology have shown segregation in school education has a n

分类：英语六级题型：单选题

自从1978年启动改革以来，中国已从计划经济转为以市场为基础的经济，并经历了经济和社会的快速发展。年均10％的GDP增长已使五亿多人脱贫。联合国的“千年(mil

分类：英语六级题型：单选题

In what way is urbanization in poor countries good for the environment?A．More l

分类：英语六级题型：单选题

运输业的一项综合性经济指标是（　　）。A．运输线路长度 B．运输量密度 C．运送速度 D．运输成本

分类：英语六级题型：单选题