安徽鼎尖教育 2024届高一2月开学考英语答案-2024-2025英语周报圈

安徽鼎尖教育 2024届高一2月开学考英语答案，目前2024-2025英语周报圈已经汇总了安徽鼎尖教育 2024届高一2月开学考英语答案的各科答案和试卷，获取更多{{papers_name}}答案解析，请在关注本站。

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分9▣□11：34黑龙江省哈尔滨市第三中学20232024学年高三下学期一模英语试卷印三3开始插入查看审阅Working with a team of colleagues,he grew marigolds(孔雀草)and sage(鼠尾草)in his lab that arecommonly found in urban environments.The plants were divided into two groups after getting mature.Onegroup was exposed to 73 decibels of traffic noise.The other group was left to grow in silence.After 15days had passed,samples were taken from the youngest fully expanded leaves on every plant in theexperiment and studied.None of the plants exposed to the traffic noise did well.Analysis of their leaves revealed that all ofthem were suffering.The team found that a range of hormones()normally associated with health ygrowth and development in plants were present at significantly reduced levels in the plants exposed to thenoise.Two stress hormones,which are normally produced to prevent insect attacks and deal with salty soilor very cold temperatures,were elevated.Ali Akbar's findings make it clear that though plants lack ears,the noise of traffic still bothers themenough to trigger dramatic stress responses that are not much different to those that would be found inplants exposed to drought,highly concentrated salt or heavy metals in their soil.The next question is whether all noise pollution affects all species in the same way.The natural worldis by no means silent,and it is apparent that not all plants suffer from noise pollution.Whether some plantspecies have evolved coping mechanisms,which might one day be collected and transferred intourban-living species,is a mystery worth exploring.28.What did scientists believe in the past?A.Noise is a problem directly facing both animals and plants.B.Plants can be affected by noise in an indirect way.C.Animal partners can do harm to their botanical partners.D.Sound waves can damage plants because they have senses.29.What did Ali Akbar want to confirm in their experiment?A.Ultrasound is similar to traffic noise in that it doesn't harm plants.B.Plants exposed to ultrasound exhibit negative signs of growth.C.Traffic noise causes plants to grow unhealthily and slowly.D.Plant leaves contain hormones dealing with a harsh environment.30.Which of the following statements is true?A.Plants growing in silence have a reduced level of hormones.B.Plants exposed to noise respond differently from those in droughtC.Different noise pollution has the same effect on all species.D.An increase in stress hormones in plants means they are in hardship.31.What can we infer from the passage?A.Some plants might not necessarily be harmed by the sound in nature.B.Some plants have surely developed a method to cope with traffic noise.C.Urban-living species can be engineered to grow well in the natural world.D.The silence in nature promotes the development of noise coping mechanisms0全文：31011

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