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【单选题】
已知N*N的图像f(x,y)的傅立叶变换为F(u,v),则 的傅立叶变换是:A.
F(u-N,v-N)
B.
F(-u,-v)
C.
-F(u,v)
D.
F(u-N/2,v-N/2)
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举一反三
【单选题】—Thanks for the lift. I do appreciate it. —________.
A.
No problem
B.
With pleasure
C.
Not necessarily
D.
A piece of cake
【简答题】An optimist does not necessarily try ___________
【单选题】_______ I admit it is by no means an easy job, I won't necessarily accept it.
A.
As
B.
As long as
C.
Since
D.
When
【单选题】听力原文：Woman: I get lots of ideas for novels, but I don't necessarily follow them all up. Only when they stick around over a period of years do I realise that a particular idea has really got a hold on ...
A.
She bases her novels on personal experiences.
B.
Ideas come to her once she starts writing.
C.
She lets ideas develop gradually in her mind.
【单选题】I am a regular person who exercises his rights, and who is finding it necessarily difficult to do so.
A.
我是一个遵纪守法的人，要行使自己的权利却发现这样做很困难。
B.
我只是一个规规矩矩地行使自己的权利却发现这样做越来越困难的人。
C.
我只是一个经常在行使自己的权利时却发现这样做必定有困难的人。
D.
我只是一个普通人，不断锻炼自己右手的肌肉，但发现很难有效果。
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