Thisis3Dprinter.Andthisisanart

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This is 3-D printer. And this is an artificial (人工的) ear. Can you believe that scientists printed this artificial ear by this 3-D printer?

A．a

B．an

C．the

D．/

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A．Never mind.	B．Of course not.
C．You’d better not.	D．No, I don’t.

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Our class teacher asked us .

A．why doesn’t Susan come for the picnic

B．why didn’t Susan come for the picnic

C．why Susan not come for the picnic

D．why Susan didn’t come for the picnic

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B： About half an hour’s bus ride. Shall we go there by taxi?

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If the wind blows softly, we kites in the park instead of playing cards at home this afternoon.

A．flew

B．will fly

C．are flying

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A： What did our class teacher say a moment ago?
B： Sorry, I didn’t catch it. I something else.

A．has thought of	B．was thinking about
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