河南省2024-2025学年第一学期九年级教学质量检测二英语（RAB）答案

2024-10-27 21:17:52 7

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九、心州27.What is the primary reason for the author's book,"River Town,becoming asurprise bestscller?A.Its detailed descriptrons of the Three Gorges project.B.Its rejection by many publishers.C.The author's personal journey and transformation.D.The unexpected transformation of Fuling it documents.CBatteries are an essential component in powering numerous devices,from thesmallest sensors to the largest systems.However,as technology advances,thedemand for more compact and efficient power sources has become increasinglyimportant.Researchers at the University of Missouri(MU)are tackling thischallenge by developing a nuclear energy source that promises to be smaller,lighter,and more efficient than traditional chemical batteries.Jae Kwon;an assistant professor of electrical and computer engineering atMU,is at the forefront of this innovative project.He emphasizes the need forenergy sources with high energy density to meet the power demands of moderndevices."The radioisotope battery can provide power density that is much higherthan chemical batteries,Kwon stated.His team has made significant advances increating a nuclear battery that is as small as a penny in size and thickness,designedto power micro/nanoelectromechanical systems (M/NEMS).Despite the potential benefits,the concept of nuclear batteries can be met withfears due to safety concerns.Kwon is quick to address these fears,pointing outthat nuclear power sources have been safely utilized in various applications foryears,including life-saving devices like pacemakers,space satellites,andunderwater systems.His new idea is not only in the battery's size,but also in its semiconductor()Kwon's battery uses a liquid semiconductor rather than a solidsemiconductor."The key part of using a radioactive battery is that when you harvest theenergy,part of the radiation energy can damage the lattice structure(晶格结构)ofthe solid semiconductor,Kwon said."By using a liquid semiconductor,webelieve we can minimize that problem.Along with J.David Robertson,a chemistry professor and associate directorof the MU Research Reactor,Kwon is working to construct and test thisgroundbreaking battery.Their vision is to not only enhance the battery's poweroutput but also to further reduce its size and experiment with different materials.Kwon envisions a future where the battery could be thinner than a strand of humanhair,opening up new possibilities for powering the smallest of devices withunprecedented efficiency and reliability.28.What is the primary goal of the research being conducted at MU?A.To develop larger batteries.B.To increase battery safety concerns.C.To create more efficient power sources.D.To reduce the use of chemical batteries.2025届·普通高中名校联考信息卷（月考二）·英语5

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