And the protests helped pass the Civil Rights Act of Nineteen Sixty-Four.

VOA: special.2010.01.29

four-year-olds and five-year-olds are able to pass this task.

四岁五岁大的儿童则能够通过这个任务

耶鲁公开课 - 心理学导论课程节选

four-year-olds and five-year-olds are able to pass this task.

四岁五岁大的儿童则能够通过这个任务

耶鲁公开课 - 心理学导论课程节选