Hehasmadeanotherwonderfuldiscovery,__________ofgreatimportancetoscience.
A.which I think is B.which I think it is C.I think which is D.ofwhich I think it iS正确答案A
Hehasmadeanotherwonderfuldiscovery,__________ofgreatimportancetoscience.
A.which I think is B.which I think it is C.I think which is D.ofwhich I think it iS正确答案A