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题库 / OG2015-SC-66
In a plan to stop the erosion of East Coast beaches, the Army Corps of Engineers proposed building parallel to shore a breakwater of rocks that would rise six feet above the waterline and act as a buffer, so that it absorbs the energy of crashing waves and protecting the beaches.
act as a buffer, so that it absorbs
act like a buffer so as to absorb
act as a buffer, absorbing
acting as a buffer, absorbing
acting like a buffer, absorb
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act和rise平行 absorbing和protecting平行
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