人教版(PEP)2022-2023度第—学期学业水平监测三年级英语试卷（图片版无答案）考试试卷

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D In a preclinical trial on a beating human heart,researchers have found that a drug candidate developed from the venom of the world's deadliest spider,the funnel web,may hold promise for heart attack treatment and transplants.The re- searchers,led by Meredith Redd of the University of Queensland (UQ),and Sarah Scheuer of Victor Chang Cardiac Research In- stitute,tested a protein called Hila,found in the Fraser Island (K'gari)funnel web venom,on a beating heart that had been ex- posed to heart attack stresses. "After a heart attack,blood flow to the heart is reduced,re- sulting in a lack of oxygen to heart muscle,says Nathan Palpant of UQ,corresponding author of the paper."The lack of oxygen