This week, I went to Memphis, Tennessee, where I spoke to the graduating class of Booker T. Washington High School.
本周,我去了田纳西州的孟菲斯市,在那里我向布克·华盛顿高中的毕业班同学们发表了演说。
The Tennessee experiment, known as Project Star, offered a chance to answer these questions because it randomly assigned students to a kindergarten class.
这个被称为“小星星项目(Project Star)”的田纳西试验为回答上述问题提供了可能。
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