—Howmuchdoyouknowaboutthe3Dfil

—How much do you know about the 3D film technology?
---A little ,Not until____the hot movie Avata____some about it.

A．did I see , did I begin to learn	B．I saw,I begin to learn
C．I saw,did I begin to learn	D．did I see,I begin to learn

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The incomes of skilled workers went up. ____, unskilled workers saw their earnings fall.

A．Meanwhile

B．Moreover

C．Therefore

D．Otherwise

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–Mom, I will send you a gift for your birthday, ____ beyond your imagination.
--Oh, dear, thanks.

A．which

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____ the machine, the engineers paid much attention to the noise from it.

A．Having examined

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A．During

B．Since

C．By

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If the machine makes a mistake -- ____ rarely happens -- it gives a warning in the form of a red light.

A．that

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