本文从以下几个角度介绍。
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1、河南省2023-2024学年第一学期教学质量检测九年级英语
2、河南省2023-2024学年度九年级期中检测卷英语
3、河南省2024到2024英语九年级
4、2024河南省九年级学业水平考试仿真试卷a英语
5、2023-2024河南九年级英语测试题及答案
6、2024河南中考·九年级评估调研试卷
7、2023-2024河南省九年级英语试卷
8、2023-2024河南省九年级学业水平卷
9、河南省2023-2024学年度九年级期末检测卷
10、2023-2024河南省九年级学业水平卷一
[PGZX C HEN]英语试题)
教学全国@0所名校单元测试示范卷札记B.Arthritis is common among old people.C.Sports-loving persons are in better health.D.Exercise may not be responsible for osteoarthritis.29.What made Lucy Gates and her colleagues do the large study?A.Their love for exercise.B.The goal to treat knee pain.C.The results of earlier studies.D.Their care for those 5,000 people.30.How did Lucy Gates and her colleagues do the large study?A.By studying the cause of pain knees.B.By tracking and recording for a long time.C.By asking people to fill in online questionnaires.D.By grading and recording people's metabolic rates.31.In which column of a newspaper may this text appear?A.Education.B.Jobs.C.Sports.D.Arts.【答案与解析】人们一直认为运动会导致膝盖疼痛，然而研究表明并非如此。28.D根据第1段第1句可知，一项大型研究表明，人们的运动量与是否会患骨关节炎似乎没有关系。29.C根据第3段第1句可知，以往的关于运动是否让人更有可能患上骨关节炎的各项研究，得出的结论互相矛盾，所以Lucy Gates和她的同事们进行了新的研究。30.B根据第4、5段可知，Lucy Gates和她的同事们通过长时间的跟踪和记录来完成这次研究。31,C本文介绍了一项关于骨关节炎与运动关联的研究。因此本文很可能出现在报纸的“运动”专栏。DSmoke alarms are painfully loud.Yet plenty of people,especially kids will sleep through analarm's noise.When the smoke is caused by fire,sleeping through that noise could prove deadly.That's why researchers at Nationwide Children's Hospital in Columbus,Ohio,have been testingnew types of alarms that few kids sleep through.Kids who heard their mother's voice in an alarmwoke up in around two seconds.Those who heard the standard smoke alarm often took over twominutes to rouse.In a real fire,that extra time could spell the difference between life and death,the researchers say.Mark Splaingard led the research team.His team tested 176 children between the ages of 5and 12.All had been tested to make sure they could hear well.Once the children had fallen into adeep sleep,researchers randomly sounded a smoke alarm and they noted how long it took kids towake up.Sometimes the sound was a standard,high-pitched smoke alarm.But the research-ers also programmed alarms with three recordings of the voice of each child's mother.In onealarm,the mother repeated her child's first name over and over.In a second,she said,"Wake up.Get out of bed.Leave your room."In the last,she repeated her child's name twice,and then said"Wake up,get out of bed and leave the room."Standard,high-pitched smoke alarms failed towake up 47 out of every 100 kids.Smoke alarms with a mother's voice woke up all but 10 in every100 kids.Earlier studies have shown that alarms with lower pitchesaround 500 hertz,for instancework better at waking people up.Splaingard's study doesn't answer whether a mother's voice isbetter than a low-pitched alarm,but it does indicate that names don't matter.Splaingard's teamplans to continue testing the effectiveness of different smoke alarms.For example,theresearchers want to learn how good male voices are at waking sleeping children compared to a【23新教材·DY·英语-BSD-必修第一册-QG】
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