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1、2023-2024学年度七年级英语上册河北省期末测试卷
2、河北省2023-2024学年第二学期教学质量检测一七年级
3、河北省2024至2024学年七年级期末考试英语
4、2023-2024河北省七年级英语第一学期期末预测卷(一)
5、河北省2024至2024学年度七年级期末检测卷一
6、河北省2023-2024学年度七年级期末检测卷(一)英语试卷
7、河北省2024至2024学年度七年级
8、河北省2023-2024学年第一学期期中七年级
9、河北七下英语期末卷2024
10、河北省2023-2024学年第一学期期中检测英语
30.Why are the numbers listcd in paragraph6?A.To describe the difficulty in splitting scawater.B.To demonstrate how powcrful AA batteries arc.C.To stress the practicality of clectricity gcnerationD.To explain whymore oxygcn cxists ncar thcnodules31.What canwe inferfromGcigcr'swords?A.Marine ccology must berespected whilemining nodulcs.2025B.The Clarion-ClippertonZone hasno life due tomining.C.Marine biologists opposemining in the ocean.考不凡D.MiningnodulesisbenefictMformarine lifeDWetendtoprimarilylyinteractwith other individualsin the samesoqjoeconomiclevel,whilepeoplein smallXXcities andrural areas aremuchmore likely to have diverse interactions.A teamofresearchersledbyStanfordUniversityusedGPSdatacollectedfrom9.6millioncellphones in the United States to deterrqinahowoften peopleofdifferent socioeconomic statusescrossedpathsduringtheday.Afterinferringeachpersosocioeconomic status from estimatedrentalprices on a housingmarketing website,the researchers counted potential interactions between users over the course oftheday-timeswheretwocellphoneshadGPSpings（定位仪）withi50metersofeachotherwithina five-minutwindow.They collected data on almost 1.6 billionpath-crossings.The researchersMsocioeconomicsegregation.“That seems like an unexpected observation,said Jure Leskovec,a professor of the team.“Butthere is a large variety ofchoices in big cities.In NewYork,you can spend $10or $1,000 on adinner,whileifyouliveinaplacewithonly onerestauranteveryonegoes there,richorpoor.hatseems tobe themain mechanismfor thisphenomenon.The good news is, there are ways to build cities to have more socioeconomic mixing.Lookingat large cities,theresearchers found that those that placed frequently-visited activity centresinbetween different neighborhoods-instead of in the centre ofeach neighborhood-were lesssegregated."We've long emphasised residential integration,butwe now have a newway,”said Grusky,amember of theresearch team.“Wben new shopping centres and other activity centres are up for-ole sure they're located in places that will promote diversity.
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