[学林教育]2024~2025学年度第一学期七年级第一次阶段性作业英语C(外研社版)试题

[学林教育]2024~2025学年度第一学期七年级第一次阶段性作业英语C(外研社版)试题正在持续更新，目前2024-2025英语周报答案网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。

30.What do weknow about the unclear words in the experiments?A.They stoppedus thinking further.B.They led to misunderstandingC.They were noticed instantly.D.They seemed to be useless.31.What does the underlined part “the signal"in the lastparagraph refer to?A.The following speech sound.B.The unclearly soundingword.C.The similarly sounding wordD.Theisolatedsyllable.DOn Inaccessible Island， you hear the sound of the Inaccessible Island rails（秧鸡）everywhere. The small flightless birds move around,feeding on worms and berries. During atripin 2ol1，it took days for Stervander,then a doctoral student,to spot one. “Even then,you see something little and dark，running for a second， and that's about it,”he says.Catching one，though，proved easy.When scientists played arecording of the bird's call，amaleandfemaleranintothenetafewminuteslaterInaccessibleIsland railslive only onInaccessibleIsland.“No one knewthehistory,”saysStervander，now a research fellow at the University of Oregon. He aimed to answer thequestion about these birds: Howdid they get to Inaccessible Island to begin with?The first scientist to describe the rail was Percy Lowe.He thoughtthe bird wasfromAfrica and had always been flightless.In his view,it hadarrived at the island by walking overlandbridges.Butnowthescience ofplate tectonics（板块构造论）suggcsts that's notthe case.Ina recent paper，Stervander and his colleagues give evidcnce for a different versionAfter studying the genome of the rails, scientists found the InaccessibleIsland rail'sclosest relative—the crake in Uruguay. Bothbirds are related to the black railin America.Thefinding suggests the ancestors of these birds could fly. That meansInaccessible Islandrailsflew to theirpresent home,and like manybirds living on islandswith nopredators（捕食者），they graduallylost the ability to fly. Flyingtakes energy,so if there's no reason to fly，it'smorepracticalnotto.On thisisland， there's a growing population of rails， but they're fragile. Should apredator reachthe island，it could make quick workof the birds.People on nearby islands arecareful to avoid introducing any predators to Inaccessible Island, and the risk is low， givenhowhard it is to get there.For now，the railslivepeacefully in a place where few humans areeager togo.32.What can we learn about theInaccessible Island rails?A.Theymove around quickly.B.They are not afraid ofhumans.C.They are hard to trap.D.They can be seen everywhere.33.Whatcaused the InaccessibleIsland rails to become flightless？A.Their way to search forfood.B.Their connection with their ancestors.C.Their lack ofenergy.D.Theirliving environment.34.Which best describes the present situation of the Inaccessible Island rails?B.Dangerous.C.Safe.D.Tough.A.Unexpected.35.What's the best title for the text?A.How Did the Flightless Bird Get to Inaccessible Island?B.Why areInaccessibleIsland Rails Limited on theIsland?C.The Development of Rails on InaccessibleIslandD.The Need to Protect Flightless Inaccessible Island Rails【高三英语第5页（共8页）】25023C