Eventually, they gave up the project to build a bridge over the river because of the （） high costs i
来源：整理
Eventually,theygaveuptheprojecttobuildabridgeovertheriverbecauseofthe（）highcostsi
Eventually,theygaveuptheprojecttobuildabridgeovertheriverbecauseofthe（）highcostsitwouldinvolve.
A.excessively
B.expensively
C.effectively
D.efficiently
正确答案：A
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