Hehasmadeanotherwonderfuldiscovery,____ofgreatimportancetoscience.
A.which I think is B.which I think it is C.I think which is D.of which 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.of which I think it is正确答案A