B,这题其实是个加减法的问题,要读懂最后一句话 阑尾炎- 以前80% necessary, 20% unnecessarily 新技术error只有2%,大量减少了unnecessarily,但是还是(no fewer)=more than necessary 新技术的手术量=80% necessary +2% unnecessarily 那就是说比那80% necessary 的多,那自然这error 2%就是被误判成了necessary B.the misdiagnoses produced by this test are always instances of attributing appendicitis to someone who does not, in fact, have it 总把who dose not判成have it! |