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[单选题]

一束平行线偏振光垂直通过一个λ/4波片后,出射光( )。

A.一定是椭圆偏振光

B.一定是圆偏振光

C.可能是椭圆偏振光或圆偏振光

D.可能是椭圆偏振光或圆偏振光,也可能是线偏振光

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更多“一束平行线偏振光垂直通过一个λ/4波片后,出射光()。 A.一定是椭圆偏振光 B.一定是圆偏振光 C.可能是椭”相关的问题

第1题

-Sam , this is my friend , Jane.--__________.A. I' m JackB. Glad to meet you , SamC

-Sam , this is my friend , Jane.

--__________.

A. I' m Jack

B. Glad to meet you , Sam

C. Glad to meet you , Jane

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第2题

— Sam, this is my friend, Jane.— _________________.A: Glad to meet you, SamB; Glad to me

— Sam, this is my friend, Jane.

— _________________.

A: Glad to meet you, Sam

B; Glad to meet you, Jane

C; I'm Jack

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第3题

听力原文:M: Do you know Professor Sam's brother?W: I've never met him. but I've heard that

听力原文:M: Do you know Professor Sam's brother?

W: I've never met him. but I've heard that he's famous.

Q: What conclusion can be drawn from the woman's reply?

(2)

A.She has not heard of Professor Sam.

B.She is a good friend of Professor Sam's.

C.She has not heard of Professor Sam's brother.

D.She does not meet Professor Sam's brother.

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第4题

听力原文:M: What a relationship Sam and his mother have!W: Don't they?I only hope my son a

听力原文:M: What a relationship Sam and his mother have!

W: Don't they?I only hope my son and I can get along like that when he is Sam's age.

Q: What can be inferred from the woman?

(13)

A.She envies Sam's relationship with his mother.

B.She gets along extremely well with her son.

C.She doesn't know Sam or his mother.

D.Her son is the same age as Sam.

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第5题

Four years ago, Jane was twice as old as Sam. Four years on from now, Sam will be 3/4 of J
ane's age. How old is Jane now?

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第6题

A: John, you didn't show up at my birthday party last night.B: ______.A.I'm sorry, Jane, b

A: John, you didn't show up at my birthday party last night. B: ______.

A.I'm sorry, Jane, but I already sent you a present.

B.I'm sorry, Jane, but I don't like to be shown.

C.I'm sorry, Jane, but there was a serious accident on the way.

D.I'm sorry, Jane, but I don't like shows.

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第7题

听力原文:W: Ken, did you turn in your locker key?M: No, I got Sam to do it.Q: What happene

听力原文:W: Ken, did you turn in your locker key?

M: No, I got Sam to do it.

Q: What happened to the key?

(13)

A.Sam returned it.

B.It is still with Sam.

C.It is left in the locker.

D.It is still with Karl.

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第8题

听力原文:Jane,this is my friend,Tom.(4)A.Where is he from?B.My pleasure.C.Glad to meet you

听力原文:Jane,this is my friend,Tom.

(4)

A.Where is he from?

B.My pleasure.

C.Glad to meet you.

D.Thank you.

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第9题

I' m speaking on behalf of my friend John.A.in place ofB.in front ofC.directly aboutD.with

I' m speaking on behalf of my friend John.

A.in place of

B.in front of

C.directly about

D.with regard to

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