安徽鼎尖教育 2024届高一2月开学考英语答案

安徽鼎尖教育 2024届高一2月开学考英语答案正在持续更新，目前2025衡水金卷先享题答案网为大家整理了相关试题及答案，供大家查缺补漏，高效提升成绩。

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1、2023-2024安徽省鼎尖教育试卷高一英语
2、安徽省鼎尖教育试卷高一2024
3、安徽2024学年鼎尖名校高二期末考试
4、2023-2024安徽鼎尖教育联考高一
5、安徽鼎尖名校2024高二联考
6、2024安徽鼎尖教育高三10月联考
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10、2023-2024鼎尖教育高一期末试卷

DBottled water has long been marketed as a safe drink-if it doesn't come straight from amountain spring,it's at least clean and free of chemicals.But a new study demonstrates that bottledwater may not be so safe when it comes to microscopic plastic pollutants capable of passing intothe bloodstream.For years scientists have raised the alarm over microplastics,which form when plastics breakdown into increasingly smaller particles(),ranging from five millimeters down to onemicrometer.Previous studies have found that a liter of bottled water can contain tens of thousandsof identifiable plastic particles.But they stopped at the one micrometer level due to technologicalrestrictions.The study used a new technology to find even smaller particles,and detected an average240,000 plastic particles per liter of bottled water.About 90%of the particles were considerednanoplastics,smaller than one micrometer.Unlike microplastics,they are capable of passingthrough some organs like lungs into the bloodstream.From there they can stay in the heart muscleand other organs,pass into the brain,and even into the bodies of unborn babies.So far,little research shows what nanoplastics exactly do once they enter the bloodstream.But there is much evidence that chemicals used in plastic production are bad for human healthEven if nanoplastics themselves are not deleterious,they can serve as carriers for the dangerouschemicals,increasing the risk of cancer and impacting key organs such as the heart."There is a huge world of nanoplastics to be studied,"said the researchers.Even ifnanoplastics make up 90%of the number of plastic particles found in bottled water,they make upfar less in mass,they said.However,this fact provides little comfort:It's the numbers rather thanmass that matter;and the smaller things are,the more readily they can get inside us.32.What does the technological barrier in the previous studies concern?A.The number of microscopic plastics.B.The quality of water bottles.C.The distribution of plastic pollutants.D.The size of plastic particles.33.What does the text imply about microplastics?A.They are not very likely to pollute bottled water.B.Their number per liter of bottled water is constant.C.They are less potentially risky to health than nanoplasticsD.Their number in springs is larger than that of nanoplastics34.What does the underlined word"deleterious"in paragraph 4 probably mean?A.Large.B.Useless.C.Safe.D.Harmful.35.Why do nanoplastics need further research?A.They are too small to identify.B.They have easy access to organs.C.They are dangerous regarding mass.D.They have a higher percentage in life.高三英语试题第6页共10页