29．He made another wonderful discovery, of great importance to science． A．which I think is B．which I think it is C．which I think D．I think which is 【查看更多】

 

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He made another wonderful discovery, _____ of great importance to science．

A．which I think is         B．which I think it is    C．which I think it     D．I think which is

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He made another wonderful discovery, ________ of great importance to science．

[　　]

A．which I think is

B．which I think it is

C．which I think it

D．I think which is

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He made another wonderful discovery, ________of great importance to science．

[　　]

A．which I think is

B．which I think it is

C．which I think it

D．I think which is

查看答案和解析>>

He made another wonderful discovery, ________ of great importance to science．

[　　]

A．which I think is

B．which I think it is

C．which I think it

D．I think which is

查看答案和解析>>

He made another wonderful discovery, _________ of great importance to science．

[　　]
A．

which I think is

B．

which I think it is

C．

which I think it

D．

I think which is

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