957.The man made another discovery,_____ of great importance to science.
A.which I think it is
B.one that I think it is
C.one that I think is
D.that I think is
958.On the contrary, I think it is John,_____ you,_____ to blame.
A.more than;are
B.less than;who are
C.rather than;is
D.rather than;that is