In 1 study, researchers examined the pages of 500 18-year-olds from the United States.

在其中一项研究里，研究人员查阅了全美500名18岁的青少年的网页。

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In one recent study - among the 1,000 he's published - Ayala establishes that gorillas and chimps may serve as reservoirs for the parasites that cause human malaria.

VOA: standard.2010.04.05

In addition, 3% of secondary heads had experienced physical violence in the past 12 months, up from 1% in the 2009 study.

BBC: Report finds indiscipline problem in Scottish schools

Researchers using a new systematic analysis technique identified faults in many more regions of DNA in the 1, 000 patients involved in the study.

BBC: Study identifies 'many more' autism genes

Soll of Duke, See ran a research project over two-and-half-years that examined advice-taking in some 1, 500 study participants.

FORBES: Bosses Don't Listen: Now There's Proof