选择性必修第三册 Unit 9 Human Biology B组-【导与练】2024高考英语一轮复习高中总复习第1轮能力提升题组训练（新教材，北师大版）

B组 　　　　　　 　　　　　 　　　　　 Ⅰ.阅读 A (2022海南北京师范大学万宁附中高三模拟) One of the important but seldom-discussed problems in healthcare reform is how to take care of our aging population as people continue to live longer.According to a new study from the MacArthur Research Network on an Aging Society,by 2050 Americans may live 3.1 to 7.9 years longer than the government expects.That means women would live 89 to 93 years and men 83 to nearly 86 years.The researchers base their conclusion on “rapid advances in biomedical (生物医学的) technology that delay the start and progression of major deadly diseases or slow the aging process.” While this is good news,especially for the young,the life expectancy,which is in excess of (超过) the government’s estimates,would raise costs sharply for Medicare and Social Security.If the study’s predictions are accurate,the total cost for those two programmes through 2050 could be between $3.2 trillion and $8.3 trillion higher than the US Census Bureau and the Social Security Administration currently expect. And that’s only the beginning.With anticipated scientific breakthroughs in coming decades,people could eventually live to 150 years of age,says Dr.Steven Joyal,an official of the Life Extension Foundation (LEF),a nonprofit organisation that promotes research on how we can live longer and healthier.The MacArthur paper,in fact,says that some experts believe the average life expectancy could hit 100 by 2060. What’s more,Joyal says,overcoming disease and slowing down the aging process will lead to a sharp decline in disability,allowing people of advanced age to function as well as they did when they were much younger.“In other words,a 90-year-old person could have the same mental and physical capacity (能力) as somebody 40 or 50 years old.” 1.What does the new study show? A.Great progress has been made in the US in public security. B.Americans will live much longer by 2050 than they do now. C.Few people pay attention to the healthcare reform in the US. D.Fewer