全国100所名校最新高考冲刺卷英语2023届Y1
全国100所名校最新高考冲刺卷英语2023届Y1正在持续更新,目前2024届周测卷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。
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11.What cn we inouoriserA.They enjoy exploring how to paint.B.They share their love for van Gogh.C.They admire van Gogh very much.They want to experience the life there.DPlants don't have ears or a central nervous system,but new research out of the University ofMissouri has demonstrated that they might still have the ability to"hear".More specifically,plantshave been shown to exhibit an immune()response to the mere sound of a hungry insect.For the study,researchers played the sound of a caterpillar chewing to a group of plants,which caused slight vibrations()on the plants'leaves.The plants were able to recognize thesevibration patterns as danger,and responded by mounting the appropriate immune response.Inother words,it appears that plants can"hear"themselves being chewed on.Researchers assume that plants achieve this remarkable ability thanks to proteins that respondto pressure found within their cell membranes.Vibrations cause pressure changes within the cell,which can change the behavior of the proteins;however,additional study will be required toconfirm or deny this theory.Once researchers identify the exact mechanisms at play in this process,it could lead toadvances in crop protection.Farmers could potentially learn to use sound to cause a plant's naturalchemical defenses against insect threats,rather than turning to poisonous chemicals."We can imagine applications of this where plants could be treated with sound or geneticallyengineered to respond to certain sounds that would be useful for agriculture,"said study authorHeidi Appel.The study adds to the growing list of ways that plants have been shown to theirenvironments.They are not the boring organisms that many-people assume they are.For instance,some plants are able to communicate with each other and signal upcoming danger to theirneighbors by releasing chemicals into the air.Plants can respond to light(think about sunflowers)and temperature.Some can even respond to touch,such as the Venus flytrap(捕蛹草),which snapsshut when an insect stimulates its haifs.12.Why did researchers carry out the study?A.To find out if plants can react to sounds.B.To learn how plants recognize dangers.DThow nlants improve immune systems.