问题详情

Which of the following statements about the 1970 Birth Cohert Survey is CORRECT？

A．Each subject received four educational development tests.

B．The survey was designed to prove the decisive role of genes.

C．The finding of the survey is against Woodhead"s viewpoint.

D．The survey turns out to be useless in the field of medicine.

请帮忙给出正确答案和分析，谢谢！