题干

一定值电阻,通过2C的电荷量时,消耗的电能是8J,若在相同时间内通过4C的电荷量,那么电阻两端的电压和消耗的电能分别为(       )

A:4V,16J

B:8V,16J

C:4V,32J

D:8V,32J

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D

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                                                                                                                 范滂传
       范滂,字孟博,汝南征羌①人也。少厉②清节,为州里所服。冀州饥荒,盗贼群起,乃以滂为清诏使,案察之。滂登车揽辔,慨然有澄清天下之志。及至州境,守令自知臧污,望风解印绶去。
       后诏三府掾属③举谣言④,滂奏刺史、二千石权豪之党二十余人。尚书责滂所劾猥⑤多,疑有私故。滂对曰:“臣之所举,自非叨秽⑥奸暴,深为民害,岂以污简札⑦哉? 以会日⑧迫促,故先举所急;其未审者,方更察实。若臣言有贰,甘受显戮。”吏不能诘。
       建宁二年,遂大诛党人。诏下,急捕滂等。督邮吴道至县,抱诏书,闭传舍⑨,伏床而泣。滂闻之曰:“必为我也。”即自诣狱。县令郭揖大惊,出,解印绶,引与俱亡,滂曰:“滂死则祸塞⑩,何敢以罪累君,又令老母流离乎!”
      【注】①汝南征羌:郡县名。②厉:磨练。③掾属:下属的官。④谣言:群众反映官吏好坏的歌谣。⑤猥:众多。⑥叨秽:贪污腐败。⑦简札:指奏章。⑧会日:指三公会议的日子。三公,即大司徒、大司马、大司空。⑨传舍:驿舍,供外交使节和传递政府文书者休息的地方。⑩塞:消弭,平息。

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    Empathy is the ability to share and understand the emotions of others. It is a construct of multiple components, each of which is associated with its own brain network. New research has found empathy may have a genetic component that affects personality, and cognition, psychiatric (relating to mental illness) conditions. The findings are highlighted in a new study led by researchers at the University of Cambridge, the University Paris Diderot and the Institute Pasteur, and 23andMe.

    Published yesterday in Molecular Psychiatry, the first study found evidence that genes influence our ability to read and understand emotions in others. The team at the Autism Research Centre at the University of Cambridge analyzed data from 89,000 individuals worldwide, the majority of whom were 23andMe customers, who were willing to be researched.

    Participants completed a “Reading the Mind in the Eyes Test”, in which they were shown photos of the area around the eyes and asked to identify one of two possible emotions. This assessed Theory of Mind and the ability to recognize and appreciate another person's mental state. Researchers identified that women with certain genetic variants(变异)on chromosome(染色体)3 performed better, with higher levels of empathy. Interestingly, male performance on the test was not associated with a genetic variant. Overall, women consistently performed better than men, exhibiting higher levels of empathy.

    The genetic variant associated with empathy in women is near the gene LRRN1(Leucine Rich Neuronal 1) on chromosome 3, which is highly active in an area of the human brain. Brain scans have indicated that this section of the brain may play a role in cognition empathy.

    This is also the unprecedented study that relates measures of empathy with variation in the human genome(基因组). Previous research that has attempted to assess the genetic associations of personality and psychological traits has sometimes been unreliable, due to their small sample size. 23andMe's large data offering enables scientists to gain insight into the biology behind features such as empathy.

    23andMe is committed to furthering such research and approximately 85 percent of customers agrees to allow their de-identified(去识别的)data to be made available for study. By allowing scientists access to its unique and powerful research resource engine, 23andMe helps open up genetics to qualified researchers, providing novel insights into individuals' features, genetic diseases and a variety of other conditions.