Each of the 300 arriving ninth graders are randomly(随机地) assigned to one of the houses.

出自-2012年6月阅读原文

The researchers asked fifth graders and college students to create a recovery plan to protect bald eagles from extinction.

出自-2015年12月阅读原文

Fifth graders tended to focus on features of individual eagles ( ' , How big are they? and What do they eat?).

出自-2015年12月阅读原文

College students are no better than fifth graders in memorizing facts.

出自-2015年12月阅读原文