问题详情

Doctors in the US wanted to know__________
A.the motivation offlaxseed study
B.the study on ginseng displays its good promise
C.the tots’responsibilities led them to carry out these two studies
D.ginseng is as good to cancer patients as flaxseed
E.the methods and results of the study on flaxseed
F.a different opinion Oil the use of flaxseed请帮忙给出正确答案和分析，谢谢！