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B.Attractive and accurate.C. Eco-friendly and simple.D.Portable and user-friendly26What does the author mainly try to show in thelast paragraph?emitting.A.Felicia’s achievement.Researchers found the more stressed plantsB.Felicia's hope for children.C. Felicia’s early experience.D.Felicia's son’s effect on her.sounds,which contain information for example27What is the best title of the text?about water scarcity or injury,” Hadany said. “AllA. Mom's New CPR Wrap Helps Save LifeB. Mom Panics When Son Stops Breathingtell growers when plants need watering.C. Mom's Invention Becomes a Hit OnlineThis could prove particularly beneficial in theD. Mom's First Aid Device Rescues Her SonCagriculture industry, as researchers noted in theirpublication that “more precise irrigation can savePlant owners know just how difficult it can beup to 50% of the water expenditure and increase theto figure out what they need, especially when leavesyield”. This ability could only get more importantas climate change continues to increase the intensitymay have been telling you all along. A new studyand frequency of droughts and the world continuesfound that when plants are stressed, they producespecific sounds that identify what's wrong.to struggle with food security issues.28.What was the scientists previous attitude toPrevious studies had shown that plants vibrate(震动) under stress, but for years, scientists have“plants producing sounds"?A.Suspicious.argued whether those vibrations become soundB. Supportive.C. Negative.waves. By studying tomato and tobacco plants in aD. Objective.9.What does the underlined word “imperceptible”lab container, researchers at Tel Aviv Universitymean in paragraph 3?discovered that it's true — plants scream out forA.Beneficial.help through airborne ultrasonic(超声波) sounds.B.Insensitive.C.Adjustable.“We found that plants let out sounds whenD.Unbearable.30.What contributes more to the new findingsunder stress and that each plant and each type ofaccording to the researchers?stress is associated with a specific identifiablesound,”researcherHadanysaid,“WhileA. Untiring pursuit.imperceptible to the human ear, the sounds emittedB.Digital information.C.High-tech facilities. animals, such as bats, mice, and insects.”D.Agricultural development.Human adults can only hear frequencies up to16 kilohertz but ultrasonic microphones placedA.Humans are shaking off food crisis.抢分金卷·英语(二)第4页(共8页)
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