[青桐鸣]2025届普通高等学校招生全国统一考试 青桐鸣高二联考(3月)英语试题

[青桐鸣]2025届普通高等学校招生全国统一考试 青桐鸣高二联考(3月)英语试题正在持续更新，目前金太阳答案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。

gravitational pull of a planet.Nowadays,astronomers can tell when a planet is pulling its star by only one meter asecond-about human walking speed.That's enough to detect a giant planet in a big orbit,or a small planet if it'sclose to its starAnother approach is to watch a star for a slight dip in its brightness.This occurs when an orbiting planetpasses in front of the star and blocks part of its light.At most,a tenth of all planetary systems are oriented so thatthese mini-eclipses(日食，月食)一called transits(凌日)一are visible from Earth.So,astronomers have to monitora lot of stars to capture just a few transits.The dream of astronomers is to discover a rocky planet roughly the size of Earth orbiting in a habitable zone,one that is neither too hot nor too cold to support life.If they succeed,they will have found what biologistsbelieve could be a promising residence for life.The best places to look may be dwarf stars.Smaller than the sun,dwarf stars are plentiful;seven of the tenstars nearest to Earth are dwarf stars.They also provide a steady supply of sunlight to any life-bearing planetswithin their habitable zone.Additionally,dwarf stars are dim,so the habitable zone lies closer in.If the planet iscloser to the star,it's easier for astronomers to detect a transit observation.A close-in planet also has a strongerpull on its star.That makes it easier to detect with the Doppler method.32.According to paragraph two,astronomers analyze starlight with the aim of findingA.where we can detect a giant orbitB.why a small planet is close to its starsC.whether the motion of the stars is changed。D.how strong the power of the gravitational pull is33.Why do astronomers have to monitor a lot of stars to capture transits?A.Transits last a very short period of time.B.Most planetary systems don't have transitsC.Transits only occur for a small number of stars.D.No more than 10%planetary systems have visible transits from Earth.34.Dwarf stars may be good places to spot Earth-like planets because.A.dwarf stars are limited in numberB.their planets are close to the EarthC.the closeness of the habitable zone to dwarf stars aids detectionD.the brightness of dwarf stars to Earth improves their visibility35.What is the author's attitude to the discovery of Earth-like planets?6