He made another wonderful discovery____ of great importance to science.

A：the hands of whom

B：whom the hands of

C：which the hands of

D：the hands of which

A：that; have seen

B：that; saw

C：which; have seen

D：which; saw

A：that

B：where

C：how

D：when

A：which I think is

B：which I think it is

C：which I think it

D：I think it is

A：who

B：which

C：whom

D：whose

A：why; why

B：that; for which

C：that; for

D：which; why

A：what；that

B：which；which

C：that；that

D：that；what

A：the real name

B：what his real name

C：his real name

D：whose real name

A：it

B：that

C：which

D：/

A：where

B：what

C：which

D：whose