问题详情

The Westinghouse Science Talent Search differs from traditional science contests in that ______.
A．it is an annual contest with the active participation of high school students
B．it lays emphasis on the professional quality of the projects
C．it is designed to search for the most promising students
D．it intends to find the best potential scientists请帮忙给出正确答案和分析，谢谢！