单项选择题

At first, the ______ of color pictures over a long distance seemed impossible, but, with painstaking efforts and at great expense, it became a reality.

A．transaction
B．transmission
C．transformation
D．transition
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I like Shakespeares very much, most of which ______ for the screen by now.
A．are adapted
B．have been adapted
C．has been adapted
D．were adapted
单项选择题
Everything is ready, ______
A．isn't it
B．aren't they
C．is it
D．are they
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