我不知道我是出于什么原因决定在新学校尝试一些新的活动，但有一天，我碰巧参加了科学奥林匹克竞赛队的课后会议。

I don't know what made me decide to try some new activities at the new school, but one day I chanced to show up for an after-school meeting of the Science Olympiad team.

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41名被试首先参加了评估神经质程度的测试，随后被试要完成一些任务并同时记录脑电活动。

Forty-one young men and women took a test designed to assess how neurotic they were, then were fitted with electrode caps that measured brain activity as they completed certain tasks.

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当地一家报纸报道说，11000位大学生参加了周末义务清洁活动，一些公司也组织员工参与其中。

One local newspaper reported that 11, 000 college students had volunteered for cleanup duty over the weekend. Several companies had organized teams of employees to help.

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