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單項選擇題

They are two dollars each but if you buy ten, you get a（）of ten per cent.

A.discount
B.recession
C.depression
D.discharge

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Gary has planned to take a tour around the Great Lakes in the coming summer vacation and（） great pleasure from the visit.

A.acquires
B.anticipates
C.recalls
D.reckons

單項選擇題

The survival of civilization, as we know, is（）threat.

A.with in
B.under
C.to wards
D.upon

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