晶体S的材料成本为（）元。

A．A.write

B．B.to write

C．C.wrote

D．D.writing

The clouds have_______ the sun.

A.blocked in

B.blocked off

C.blocked out

D.blocked up

Who do you think it is that he will have_______ the letter？

A.to post

B.posted

C.post

D.posting

I could not persuade him to accept it, _____ the important of it.

(A) if only I could not (B) no more than I could (C) or I could not (D) nor could I

I could not persuade him to accept it,______ make him see the importance of it.

A．if only I could not

B．no more than I could

C．or I could not

D．nor could I

him see the important of it.

(A) if only I could not (B) no more than I could (C) or I could not (D) nor could I

A．deposited

B．dislodged

C．elapsed

D．incorporated

I could not persuade him to accept it, ______ make him see the importance of it.

A．if only I could not

B．no more than I could

C．or I could not

D．nor could I

I could not persuade him to accept it, _____________ make him see the importance of it.

[A] if only I could not

[B] no more than I could

[C] or I could not

[D] nor could I