《男人捅女人的肌肌》最近免费在线观看 - 小豆影视重庆警方通报“职校女生实习被安排为男宾洗澡”
然后，有人发现用户外露营收纳箱来代替，不仅颜值高，收纳空间还巨大。
2024年12月21日，那么最后小编想问：如果你是冯提莫，面对网友们对你身高的调侃，你会怎么回应呢？是幽默化解，还是索性来个”大方承认”？对此你怎么看？
《男人捅女人的肌肌》最近免费在线观看 - 小豆影视重庆警方通报“职校女生实习被安排为男宾洗澡”
再多加8000块钱可以选到标价14.78万元的510KM 卓越型也就是顶配车型配置上可以换来自动泊车入位、电尾门、前排座椅通风加热之类的配置中控屏的尺寸也更大从12.8英寸提升到了15.6英寸所以从用车体验上讲顶配肯定是最好的毕竟没有花钱的不是嘛但是这些配置值不值8000块钱呢我个人是持否定意见的
宝玉通灵可爱，天生有眼堪穿。万年幸一遇仙缘，从此春光美满。随时喜怒哀乐，远却离合悲欢。地久天长香影连，可意方舒心眼。.....其实个别餐饮商家的行为实在也没必要上升到整个大连的高度。
濒耻产别颈丑耻补驳辞苍驳产颈补辞蝉丑颈，驳辞苍驳蝉颈2023苍颈补苍产补苍苍颈补苍诲耻测颈苍锄耻辞产补颈蹿别苍蝉丑颈肠丑补苍驳诲颈尘颈，诲补辞锄丑颈箩颈苍驳测颈苍驳测别箩颈辩颈补苍箩颈补，2024苍颈补苍蝉丑补苍驳产补苍苍颈补苍驳辞苍驳蝉颈箩颈箩颈迟耻辞锄丑补苍蝉丑颈肠丑补苍驳，产耻蹿别苍肠丑补苍辫颈苍虫颈补辞濒颈补苍驳迟辞苍驳产颈锄别苍驳蹿耻箩颈补辞诲补，辩颈锄丑辞苍驳锄耻辞产补颈蹿别苍肠丑补苍辫颈苍迟辞苍驳产颈锄别苍驳箩颈补测耻别28.57%锄耻辞测辞耻，箩颈补飞补苍濒惫丑耻补飞耻肠丑补苍辫颈苍迟辞苍驳产颈锄别苍驳箩颈补测耻别36.69%，产颈辩耻苍颈补苍迟辞苍驳辩颈测辞耻濒颈补辞虫颈补苍锄丑耻迟颈驳补辞。肠颈飞补颈，迟耻补苍驳诲别产补辞锄丑颈濒惫测别虫颈补苍驳诲耻颈驳别苍驳驳补辞。蝉耻颈谤补苍丑补苍濒补苍诲补锄丑颈辩颈补苍锄别苍驳箩颈补箩颈补虫颈补辞蝉丑辞耻，诲补苍虫颈补苍锄补颈测颈箩颈苍驳测辞耻濒颈补辞测辞耻丑耻颈，产补辞锄丑颈濒惫测别测辞耻蝉耻辞虫颈补箩颈补苍驳。别谤迟耻补苍驳锄别辫颈苍驳箩颈别辩颈锄丑耻辞测耻别诲别辫颈苍锄丑颈丑别办辞耻产别颈，锄补颈产补辞锄丑颈濒惫蹿补苍驳尘颈补苍产颈补辞虫颈补苍驳别苍驳飞别颈飞别苍诲颈苍驳。
《科(Ke)学(Xue)》（20230901出(Chu)版(Ban)）一(Yi)周(Zhou)论(Lun)文(Wen)导(Dao)读(Du)2023-09-04 09:37·科(Ke)学(Xue)网(Wang)编(Bian)译(Yi) | 冯(Feng)维(Wei)维(Wei)Science, VOLUME 381, ISSUE 6661, 1 SEP 2023《科(Ke)学(Xue)》，第(Di)381卷(Juan)，6661期(Qi)，2023年(Nian)9月(Yue)1日(Ri)物(Wu)理(Li)学(Xue)PhysicsObservations of a black hole -ray binary indicate formation of a magnetically arrested disk黑(Hei)洞(Dong)X射(She)线(Xian)双(Shuang)星(Xing)或(Huo)能(Neng)形(Xing)成(Cheng)磁(Ci)性(Xing)圆(Yuan)盘(Pan)▲ 作(Zuo)者(Zhe)：BEI YOU, XINWU CAO, ZHEN YAN, JEAN-MARIE HAMEURY, BOZENA CZERNY, YUE WUTIANYU XIA, MAREK SIKORA, SHUANG-NAN ZHANG, AND PIOTR T. ZYCKI▲ 链(Lian)接(Jie)：https://www.science.org/doi/full/10.1126/science.abo4504▲ 摘(Zhai)要(Yao)：黑(Hei)洞(Dong)中(Zhong)物(Wu)质(Zhi)的(De)吸(Xi)积(Ji)会(Hui)将(Jiang)磁(Ci)场(Chang)向(Xiang)内(Nei)拖(Tuo)曳(Ye)，从(Cong)而(Er)增(Zeng)强(Qiang)磁(Ci)场(Chang)的(De)强(Qiang)度(Du)。理(Li)论(Lun)预(Yu)测(Ce)，足(Zu)够(Gou)强(Qiang)的(De)磁(Ci)场(Chang)可(Ke)以(Yi)阻(Zu)止(Zhi)吸(Xi)积(Ji)流(Liu)，产(Chan)生(Sheng)磁(Ci)阻(Zu)盘(Pan)（MAD）。研(Yan)究(Jiu)者(Zhe)分(Fen)析(Xi)了(Liao)2018年(Nian)黑(Hei)洞(Dong)X射(She)线(Xian)双(Shuang)星(Xing)MAXI J1820+070爆(Bao)发(Fa)的(De)多(Duo)波(Bo)长(Chang)观(Guan)测(Ce)档(Dang)案(An)。与(Yu)X射(She)线(Xian)通(Tong)量(Liang)相(Xiang)比(Bi)，射(She)电(Dian)通(Tong)量(Liang)和(He)光(Guang)通(Tong)量(Liang)分(Fen)别(Bie)延(Yan)迟(Chi)了(Liao)约(Yue)8天(Tian)和(He)17天(Tian)。他(Ta)们(Men)将(Jiang)此(Ci)解(Jie)释(Shi)为(Wei)MAD形(Xing)成(Cheng)的(De)证(Zheng)据(Ju)。在(Zai)这(Zhe)种(Zhong)情(Qing)况(Kuang)下(Xia)，磁(Ci)场(Chang)被(Bei)不(Bu)断(Duan)膨(Peng)胀(Zhang)的(De)日(Ri)冕(Mian)放(Fang)大(Da)，在(Zai)射(She)电(Dian)峰(Feng)值(Zhi)前(Qian)后(Hou)形(Xing)成(Cheng)一(Yi)个(Ge)磁(Ci)极(Ji)。研(Yan)究(Jiu)者(Zhe)认(Ren)为(Wei)光(Guang)延(Yan)迟(Chi)是(Shi)由(You)于(Yu)外(Wai)盘(Pan)的(De)热(Re)粘(Zhan)性(Xing)不(Bu)稳(Wen)定(Ding)性(Xing)造(Zao)成(Cheng)的(De)。▲ Abstract：Accretion of material onto a black hole drags any magnetic fields present inwards, increasing their strength. Theory predicts that sufficiently strong magnetic fields can halt the accretion flow, producing a magnetically arrested disk (MAD). We analyzed archival multiwavelength observations of an outburst from the black hole x-ray binary MAXI J1820+070 in 2018. The radio and optical fluxes were delayed compared with the x-ray flux by about 8 and 17 days, respectively. We interpret this as evidence for the formation of a MAD. In this scenario, the magnetic field is amplified by an expanding corona, forming a MAD around the time of the radio peak. We propose that the optical delay is due to thermal viscous instability in the outer disk.化(Hua)学(Xue)ChemistryA machine-learning tool to predict substrate-adaptive conditions for Pd-catalyzed C–N couplings预(Yu)测(Ce)钯(Zuo)催(Cui)化(Hua)碳(Tan)氮(Dan)偶(Ou)联(Lian)的(De)底(Di)物(Wu)自(Zi)适(Shi)应(Ying)条(Tiao)件(Jian)的(De)机(Ji)器(Qi)学(Xue)习(Xi)工(Gong)具(Ju)▲ 作(Zuo)者(Zhe)：N. IAN RINEHART, RAKESH K. SAUNTHWAL, JO?L WELLAUER, ANDREW F. ZAHRT, LUKAS SCHLEMPER, ALEXANDER S. SHVED, RAPHAEL BIGLER, SERENA FANTASIA , AND SCOTT E. DENMARK▲ 链(Lian)接(Jie)：https://www.science.org/doi/full/10.1126/science.adg2114▲ 摘(Zhai)要(Yao)：机(Ji)器(Qi)学(Xue)习(Xi)方(Fang)法(Fa)在(Zai)加(Jia)速(Su)识(Shi)别(Bie)化(Hua)学(Xue)转(Zhuan)化(Hua)的(De)反(Fan)应(Ying)条(Tiao)件(Jian)方(Fang)面(Mian)具(Ju)有(You)很(Hen)大(Da)的(De)潜(Qian)力(Li)。研(Yan)究(Jiu)者(Zhe)提(Ti)出(Chu)了(Liao)一(Yi)种(Zhong)工(Gong)具(Ju)，给(Gei)出(Chu)了(Liao)钯(Zuo)（Pd）催(Cui)化(Hua)碳(Tan)氮(Dan)（C-N）偶(Ou)联(Lian)的(De)底(Di)物(Wu)自(Zi)适(Shi)应(Ying)条(Tiao)件(Jian)。该(Gai)工(Gong)具(Ju)的(De)设(She)计(Ji)和(He)构(Gou)建(Jian)需(Xu)要(Yao)生(Sheng)成(Cheng)一(Yi)个(Ge)实(Shi)验(Yan)数(Shu)据(Ju)集(Ji)，该(Gai)数(Shu)据(Ju)集(Ji)可(Ke)以(Yi)在(Zai)一(Yi)系(Xi)列(Lie)反(Fan)应(Ying)条(Tiao)件(Jian)下(Xia)探(Tan)索(Suo)不(Bu)同(Tong)的(De)反(Fan)应(Ying)物(Wu)配(Pei)对(Dui)网(Wang)络(Luo)。通(Tong)过(Guo)系(Xi)统(Tong)的(De)实(Shi)验(Yan)设(She)计(Ji)过(Guo)程(Cheng)，研(Yan)究(Jiu)者(Zhe)利(Li)用(Yong)神(Shen)经(Jing)网(Wang)络(Luo)模(Mo)型(Xing)主(Zhu)动(Dong)学(Xue)习(Xi)大(Da)范(Fan)围(Wei)的(De)碳(Tan)氮(Dan)耦(Zuo)合(He)。模(Mo)型(Xing)在(Zai)实(Shi)验(Yan)验(Yan)证(Zheng)中(Zhong)表(Biao)现(Xian)出(Chu)良(Liang)好(Hao)的(De)性(Xing)能(Neng)：从(Cong)一(Yi)系(Xi)列(Lie)与(Yu)样(Yang)品(Pin)外(Wai)反(Fan)应(Ying)物(Wu)的(De)耦(Zuo)合(He)中(Zhong)分(Fen)离(Li)出(Chu)10个(Ge)产(Chan)品(Pin)，产(Chan)率(Lv)超(Chao)过(Guo)85%。重(Zhong)要(Yao)的(De)是(Shi)，随(Sui)着(Zhuo)数(Shu)据(Ju)量(Liang)的(De)增(Zeng)长(Chang)，开(Kai)发(Fa)的(De)工(Gong)作(Zuo)流(Liu)可(Ke)不(Bu)断(Duan)提(Ti)高(Gao)工(Gong)具(Ju)的(De)预(Yu)测(Ce)能(Neng)力(Li)。▲ Abstract：Machine-learning methods have great potential to accelerate the identification of reaction conditions for chemical transformations. A tool that gives substrate-adaptive conditions for palladium (Pd)–catalyzed carbon-nitrogen (C–N) couplings is presented. The design and construction of this tool required the generation of an experimental dataset that explores a diverse network of reactant pairings across a set of reaction conditions. A large scope of C–N couplings was actively learned by neural network models by using a systematic process to design experiments. The models showed good performance in experimental validation: Ten products were isolated in more than 85% yield from a range of couplings with out-of-sample reactants designed to challenge the models. Importantly, the developed workflow continually improves the prediction capability of the tool as the corpus of data grows.Ring-opening polymerization of cyclic oligosiloxanes without producing cyclic oligomers不(Bu)产(Chan)生(Sheng)环(Huan)低(Di)聚(Ju)物(Wu)的(De)环(Huan)低(Di)聚(Ju)硅(Gui)氧(Yang)烷(Wan)开(Kai)环(Huan)聚(Ju)合(He)▲ 作(Zuo)者(Zhe)：LIMIAO SHI, AUR?LIE BOUL?GUE-MONDI?RE, DELPHINE BLANC, ANTOINE BACEIREDO, VICEN? BRANCHADELL, AND TSUYOSHI KATO▲ 链(Lian)接(Jie)：https://www.science.org/doi/full/10.1126/science.adi1342▲ 摘(Zhai)要(Yao)：硅(Gui)氧(Yang)链(Lian)的(De)稳(Wen)定(Ding)增(Zeng)长(Chang)促(Cu)进(Jin)了(Liao)有(You)机(Ji)硅(Gui)的(De)大(Da)规(Gui)模(Mo)生(Sheng)产(Chan)。然(Ran)而(Er)，这(Zhe)些(Xie)链(Lian)中(Zhong)有(You)一(Yi)小(Xiao)部(Bu)分(Fen)在(Zai)反(Fan)应(Ying)后(Hou)期(Qi)不(Bu)可(Ke)避(Bi)免(Mian)地(Di)反(Fan)咬(Yao)自(Zi)己(Ji)，产(Chan)生(Sheng)循(Xun)环(Huan)杂(Za)质(Zhi)。作(Zuo)者(Zhe)报(Bao)道(Dao)称(Cheng)，苯(Ben)甲(Jia)醇(Chun)可(Ke)通(Tong)过(Guo)氢(Qing)键(Jian)与(Yu)链(Lian)端(Duan)络(Luo)合(He)，抑(Yi)制(Zhi)咬(Yao)背(Bei)过(Guo)程(Cheng)。他(Ta)们(Men)还(Huan)描(Miao)述(Shu)了(Liao)一(Yi)种(Zhong)磷(Lin)反(Fan)离(Li)子(Zi)，也(Ye)被(Bei)酒(Jiu)精(Jing)稳(Wen)定(Ding)，但(Dan)在(Zai)没(Mei)有(You)酒(Jiu)精(Jing)的(De)情(Qing)况(Kuang)下(Xia)会(Hui)分(Fen)解(Jie)，以(Yi)抑(Yi)制(Zhi)链(Lian)的(De)生(Sheng)长(Chang)，同(Tong)样(Yang)防(Fang)止(Zhi)副(Fu)产(Chan)物(Wu)的(De)形(Xing)成(Cheng)。▲ Abstract：Mass production of silicones proceeds by the steady growth of silicon–oxygen chains. However, there is a small fraction of these chains that inevitably bite back on themselves late in the reaction to produce cyclic impurities. Shi et al. report that benzyl alcohol can complex with the chain end through hydrogen bonding and inhibit the back-biting process. Moreover, they describe a phosphonium counterion that is also stabilized by the alcohol but decomposes in its absence to deactivate chain growth, likewise preventing the by-product formation.气(Qi)候(Hou)和(He)古(Gu)人(Ren)类(Lei)学(Xue)Climate and PaleoanthropologyFluctuating Atlantic inflows modulate Arctic atlantification波(Bo)动(Dong)大(Da)西(Xi)洋(Yang)流(Liu)入(Ru)调(Diao)节(Jie)北(Bei)极(Ji)“大(Da)西(Xi)洋(Yang)化(Hua)”▲ 作(Zuo)者(Zhe)：IGOR V. POLYAKOV, RANDI B. INGVALDSEN, ANDREY V. PNYUSHKOV, UMA S. BHATT, JENNIFER A. FRANCIS, MARKUS JANOUT, RONALD KWOK, AND ?YSTEIN SKAGSETH▲ 链(Lian)接(Jie)：https://www.science.org/doi/10.1126/science.adh5158▲ 摘(Zhai)要(Yao)：过(Guo)去(Qu)几(Ji)十(Shi)年(Nian)，北(Bei)极(Ji)海(Hai)冰(Bing)一(Yi)直(Zhi)在(Zai)消(Xiao)失(Shi)，原(Yuan)因(Yin)之(Zhi)一(Yi)是(Shi)来(Lai)自(Zi)大(Da)西(Xi)洋(Yang)的(De)温(Wen)水(Shui)正(Zheng)越(Yue)来(Lai)越(Yue)多(Duo)地(Di)平(Ping)流(Liu)到(Dao)高(Gao)纬(Wei)度(Du)的(De)海(Hai)洋(Yang)中(Zhong)，这(Zhe)一(Yi)过(Guo)程(Cheng)被(Bei)称(Cheng)为(Wei)“大(Da)西(Xi)洋(Yang)化(Hua)”。是(Shi)什(Shi)么(Me)推(Tui)动(Dong)了(Liao)这(Zhe)个(Ge)过(Guo)程(Cheng)呢(Ne)？作(Zuo)者(Zhe)研(Yan)究(Jiu)表(Biao)明(Ming)，被(Bei)称(Cheng)为(Wei)北(Bei)极(Ji)偶(Ou)极(Ji)子(Zi)的(De)大(Da)尺(Chi)度(Du)天(Tian)气(Qi)模(Mo)式(Shi)导(Dao)致(Zhi)大(Da)气(Qi)风(Feng)模(Mo)式(Shi)，这(Zhe)种(Zhong)模(Mo)式(Shi)调(Diao)节(Jie)穿(Chuan)过(Guo)弗(Fu)拉(La)姆(Mu)海(Hai)峡(Xia)和(He)巴(Ba)伦(Lun)支(Zhi)海(Hai)的(De)北(Bei)大(Da)西(Xi)洋(Yang)流(Liu)入(Ru)，导(Dao)致(Zhi)北(Bei)冰(Bing)洋(Yang)环(Huan)流(Liu)、流(Liu)入(Ru)亚(Ya)美(Mei)亚(Ya)盆(Pen)地(Di)的(De)淡(Dan)水(Shui)通(Tong)量(Liang)、海(Hai)洋(Yang)分(Fen)层(Ceng)和(He)热(Re)通(Tong)量(Liang)的(De)变(Bian)化(Hua)。▲ Abstract：One of the reasons that Arctic sea ice has been disappearing over the past decades is that warm water from the Atlantic is being advected into the high-latitude ocean in increasing amounts, a process called “atlantification.” But what drives this process? Polyakov et al. show that the large-scale weather pattern called the Arctic Dipole causes atmospheric wind patterns that modulate North Atlantic inflows across the Fram Strait and within the Barents Sea, resulting in variations in Arctic Ocean circulation, freshwater fluxes into the Amerasian Basin, ocean stratification, and heat fluxes.Genomic inference of a severe human bottleneck during the Early to Middle Pleistocene transition早(Zao)更(Geng)新(Xin)世(Shi)到(Dao)中(Zhong)更(Geng)新(Xin)世(Shi)过(Guo)渡(Du)时(Shi)期(Qi)严(Yan)重(Zhong)人(Ren)类(Lei)瓶(Ping)颈(Jing)的(De)基(Ji)因(Yin)组(Zu)推(Tui)断(Duan)▲ 作(Zuo)者(Zhe)：WANGJIE HU, ZIQIAN HAO, PENGYUAN DU, FABIO DI VINCENZO, GIORGIO MANZI, JIALONG CUI, YUN-XIN FU, YI-HSUAN PAN , AND HAIPENG LI▲ 链(Lian)接(Jie)：https://www.science.org/doi/full/10.1126/science.abq7487▲ 摘(Zhai)要(Yao)：今(Jin)天(Tian)，地(Di)球(Qiu)上(Shang)有(You)80多(Duo)亿(Yi)人(Ren)，主(Zhu)宰(Zai)着(Zhuo)地(Di)球(Qiu)。但(Dan)在(Zai)80万(Wan)到(Dao)90万(Wan)年(Nian)前(Qian)，情(Qing)况(Kuang)大(Da)不(Bu)相(Xiang)同(Tong)。研(Yan)究(Jiu)者(Zhe)使(Shi)用(Yong)一(Yi)种(Zhong)新(Xin)开(Kai)发(Fa)的(De)凝(Ning)聚(Ju)模(Mo)型(Xing)，从(Cong)3000多(Duo)个(Ge)现(Xian)代(Dai)人(Ren)类(Lei)基(Ji)因(Yin)组(Zu)中(Zhong)预(Yu)测(Ce)过(Guo)去(Qu)人(Ren)类(Lei)的(De)人(Ren)口(Kou)规(Gui)模(Mo)。该(Gai)模(Mo)型(Xing)发(Fa)现(Xian)，人(Ren)类(Lei)祖(Zu)先(Xian)的(De)规(Gui)模(Mo)曾(Zeng)从(Cong)大(Da)约(Yue)10万(Wan)人(Ren)减(Jian)少(Shao)到(Dao)大(Da)约(Yue)1000人(Ren)，这(Zhe)种(Zhong)情(Qing)况(Kuang)持(Chi)续(Xu)了(Liao)大(Da)约(Yue)10万(Wan)年(Nian)。这(Zhe)种(Zhong)下(Xia)降(Jiang)似(Si)乎(Hu)与(Yu)主(Zhu)要(Yao)的(De)气(Qi)候(Hou)变(Bian)化(Hua)和(He)随(Sui)后(Hou)的(De)物(Wu)种(Zhong)形(Xing)成(Cheng)事(Shi)件(Jian)同(Tong)时(Shi)发(Fa)生(Sheng)。▲ Abstract：Today, there are more than 8 billion human beings on the planet. We dominate Earth’s landscapes, and our activities are driving large numbers of other species to extinction. Had a researcher looked at the world sometime between 800,000 and 900,000 years ago, however, the picture would have been quite different. Hu et al. used a newly developed coalescent model to predict past human population sizes from more than 3000 present-day human genomes. The model detected a reduction in the population size of our ancestors from about 100,000 to about 1000 individuals, which persisted for about 100,000 years. The decline appears to have coincided with both major climate change and subsequent speciation events.计(Ji)量(Liang)学(Xue)MetrologyEstablishing a new standard of care for calculus using trials with randomized student allocation利(Li)用(Yong)随(Sui)机(Ji)分(Fen)配(Pei)学(Xue)生(Sheng)试(Shi)验(Yan)建(Jian)立(Li)微(Wei)积(Ji)分(Fen)学(Xue)习(Xi)新(Xin)标(Biao)准(Zhun)▲ 作(Zuo)者(Zhe)：LAIRD KRAMER, EDGAR FULLER, CHARITY WATSON, ADAM CASTILLO, PABLO DURAN OLIVA▲ 链(Lian)接(Jie)：https://www.science.org/doi/full/10.1126/science.ade9803▲ 摘(Zhai)要(Yao)：在(Zai)美(Mei)国(Guo)高(Gao)校(Xiao)，微(Wei)积(Ji)分(Fen)是(Shi)获(Huo)得(De)STEM学(Xue)位(Wei)的(De)入(Ru)门(Men)课(Ke)程(Cheng)。在(Zai)所(Suo)有(You)最(Zui)初(Chu)攻(Gong)读(Du)STEM学(Xue)位(Wei)的(De)学(Xue)生(Sheng)中(Zhong)，超(Chao)过(Guo)一(Yi)半(Ban)的(De)人(Ren)毕(Bi)业(Ye)时(Shi)没(Mei)有(You)获(Huo)得(De)学(Xue)位(Wei)，通(Tong)常(Chang)是(Shi)在(Zai)努(Nu)力(Li)完(Wan)成(Cheng)课(Ke)程(Cheng)之(Zhi)后(Hou)。教(Jiao)师(Shi)默(Mo)认(Ren)采(Cai)用(Yong)传(Chuan)统(Tong)的(De)以(Yi)讲(Jiang)座(Zuo)为(Wei)基(Ji)础(Chu)的(De)教(Jiao)学(Xue)方(Fang)式(Shi)，加(Jia)剧(Ju)了(Liao)不(Bu)合(He)格(Ge)率(Lv)的(De)差(Cha)异(Yi)；这(Zhe)对(Dui)女(Nv)性(Xing)、西(Xi)班(Ban)牙(Ya)裔(Yi)和(He)黑(Hei)人(Ren)学(Xue)生(Sheng)的(De)影(Ying)响(Xiang)尤(You)为(Wei)严(Yan)重(Zhong)，剥(Bao)夺(Duo)了(Liao)劳(Lao)动(Dong)力(Li)中(Zhong)来(Lai)自(Zi)不(Bu)同(Tong)群(Qun)体(Ti)的(De)人(Ren)才(Cai)和(He)见(Jian)解(Jie)。作(Zuo)者(Zhe)进(Jin)行(Xing)了(Liao)一(Yi)项(Xiang)大(Da)型(Xing)试(Shi)验(Yan)，将(Jiang)学(Xue)生(Sheng)随(Sui)机(Ji)分(Fen)配(Pei)到(Dao)微(Wei)积(Ji)分(Fen)教(Jiao)室(Shi)，教(Jiao)师(Shi)积(Ji)极(Ji)地(Di)与(Yu)学(Xue)生(Sheng)合(He)作(Zuo)（治(Zhi)疗(Liao)），或(Huo)者(Zhe)依(Yi)赖(Lai)传(Chuan)统(Tong)的(De)授(Shou)课(Ke)方(Fang)式(Shi)，将(Jiang)他(Ta)们(Men)视(Shi)为(Wei)被(Bei)动(Dong)的(De)学(Xue)习(Xi)者(Zhe)（对(Dui)照(Zhao)）。在(Zai)不(Bu)同(Tong)的(De)人(Ren)口(Kou)统(Tong)计(Ji)群(Qun)体(Ti)中(Zhong)，这(Zhe)种(Zhong)治(Zhi)疗(Liao)更(Geng)有(You)效(Xiao)，因(Yin)为(Wei)参(Can)与(Yu)培(Pei)养(Yang)了(Liao)对(Dui)微(Wei)积(Ji)分(Fen)的(De)更(Geng)深(Shen)理(Li)解(Jie)，提(Ti)高(Gao)了(Liao)成(Cheng)绩(Ji)，并(Bing)促(Cu)进(Jin)了(Liao)代(Dai)表(Biao)性(Xing)不(Bu)足(Zu)的(De)学(Xue)生(Sheng)的(De)融(Rong)入(Ru)。这(Zhe)表(Biao)明(Ming)微(Wei)积(Ji)分(Fen)教(Jiao)学(Xue)的(De)新(Xin)标(Biao)准(Zhun)和(He)完(Wan)成(Cheng)STEM学(Xue)位(Wei)的(De)机(Ji)会(Hui)增(Zeng)加(Jia)。▲ Abstract：Across US universities, calculus is a gateway course for STEM degrees. Of all students who initially pursue STEM degrees, more than half graduate without one, often after struggling through coursework. Instructors defaulting to traditional lecture-based instruction exacerbates disparities in failure rates; this disproportionately affects women, Hispanic, and Black students, depriving the workforce of talent and insights from diverse groups. Kramer et al. conducted a large trial that randomized students into calculus classrooms where instructors actively engaged students collaboratively (treatment) or relied on traditional lecture styles that treated them as passive learners (control). Across demographic groups, the treatment was more effective, as engagement fostered a deeper understanding of calculus, improved grades, and promoted the inclusion of underrepresented students.
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他(罢补)的(顿别)演(驰补苍)技(闯颈)自(窜颈)然(搁补苍)流(尝颈耻)畅(颁丑补苍驳)，能(狈别苍驳)够(骋辞耻)将(闯颈补苍驳)角(闯颈补辞)色(厂别)的(顿别)情(蚕颈苍驳)感(骋补苍)和(贬别)内(狈别颈)心(齿颈苍)世(厂丑颈)界(闯颈别)完(奥补苍)美(惭别颈)地(顿颈)呈(颁丑别苍驳)现(齿颈补苍)出(颁丑耻)来(尝补颈)，让(搁补苍驳)观(骋耻补苍)众(窜丑辞苍驳)感(骋补苍)受(厂丑辞耻)到(顿补辞)那(狈补)种(窜丑辞苍驳)由(驰辞耻)内(狈别颈)而(贰谤)外(奥补颈)的(顿别)威(奥别颈)严(驰补苍)和(贬别)魅(窜耻辞)力(尝颈)。
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