If we ________ this speed, we will finish the task ahead of time.
A．hold upB．break up
C．keep upD．take up
C
C 考察動(dòng)詞短語(yǔ)辨析。句義：如果保持這個(gè)速度，我們將會(huì)提前完成任務(wù)。A項(xiàng)舉起，攔��；B結(jié)束，破碎；C項(xiàng)維持，保持；D拿起，占據(jù)，從事于。根據(jù)句義說明C正確。
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