问题详情

What do we know about the study led by Carl Wieman in the second paragraph？ 查看材料
A. Students need to turn to scientists for help if they have trouble.
B. An introductory physics course was given to physics majors.
C. Students were first taught in the "deliberate practice" approach.
D. A professor continued to teach the same section with the traditional lectures.
请帮忙给出正确答案和分析，谢谢！