1、课时分层作业(十八).阅读理解ANext time you find yourself tending to your flower garden, you may want to stay quiet.The flowers are listening.Israeli scientists discovered that the plants hear bees approaching and attempt to lure them in with sweeter nectar (花蜜)In several experiments, they found that playing audi
2、o recordings of buzzing bees around certain flowers will cause the sugar concentration in the nectar to rise by about 20% in less than five minutes.Such a rapid reaction by plants to sound had never previously been reported.Just to make a comparison, the researchers also tried a higher frequency noi
3、selike that made by a mosquito or a batand the flowers did not respond.The authors pointed out that the behavior is actually in line with the natural order of things, considering that a plants ability to sense its environment and respond to it is critical for its survival.So, it seems that plants ha
4、ve some sort of consciousness.This is not the first time that plants have reacted to the sound around them.In a 2009 study, the researchers found that womens voices help make plants grow faster.In that experiment, tomato plants were found to grow two inches taller when they were tended to by a femal
5、e gardener.What if we told you that a potato chip bag left on the floor of a break room could listen in on office gossip？As people were talking around the potato chip bag, they were sending tiny sound vibrations (震动) into the air.Those vibrations then hit lifeless objects around the room.If you had
6、a camera that was zoomed in on one of those objects extremely closely, in theory, you could actually see the object move along with the vibrations.You could then feed that video into a computer program that could translate the vibrations and you could play back the audio of the conversation that jus
7、t took place.So the next time youre at the botanical garden or in a grocery aisle, be careful what you say.Someoneor somethingmight be listening.【语篇解读】本文是一篇说明文。研究发现，植物会对周围的声音作出反应，而无生命的物体也会随声波的震动动起来。1Which of the following best explains “lure” in Paragraph 2?AShut.BAttract.CTrap.DLead.B词义猜测题。画线词所在句意为
8、：以色列科学家发现，这种植物听到蜜蜂靠近的声音，就会用更甜的花蜜来引诱它们。因此画线词与attract“吸引”意思相近。故选B。2What is vital for plants to survive?AThe soil they depend on to grow.BThe audio recordings played to them.CThe identification to the sound frequency.DThe power to sense and react to the environment.D细节理解题。根据第三段中的“a plants ability to se
9、nse its environment and respond to it is critical for its survival”可知，感知环境并对环境作出反应的能力对植物生存至关重要。故选D。3What can speed up the growth of plants?AThe womens voice.BThe strength of the vibration.CThe species of the young plant.DThe number of the music played.A细节理解题。根据第四段中的“the researchers found that womens
10、 voices help make plants grow faster”可知，女性的声音可以加快植物生长的速度。故选A。4What is the main idea of the text?AThe frequency of vibrations determines plants growth.BSound vibrations can be processed into audio.CBuzzing bees can increase the production of nectar.DPlants or lifeless objects may have the ability to
11、listen.D主旨大意题。文章开头说植物听到蜜蜂靠近就会试图用更甜的花蜜来吸引它们，后面说薯片的包装袋可能会偷听办公室的闲聊，再结合文章最后一句“Someoneor somethingmight be listening.”可知，这句话总结了全文大意“植物或无生命物体可能有听的能力”，故选D。BMore than one billion young people risk damaging their hearing through the overuse of smartphones and other audio devices，the UN warned Tuesday，proposi
12、ng new safety standards for safe volume levels.Currently，about five percent of the global population，or some 466 million people，including 34 million children，suffer from disabling hearing loss.Young people are particularly likely to develop such risky listening habits.Around half of those between th
13、e ages of 12 and 35，or 1.1 billion people，are at risk due to “long and severe exposure to loud sounds，including music they listen to through personal audio devices，” the UN health agency said.In a bid to safeguard hearing，the World Health Organization and International Telecommunications Union issue
14、d an international standard for the manufacture and use of audio devices.WHO considers a volume above 85 decibels for eight hours or 100 decibels for 15 minutes as unsafe.The safe listening devices and systems standard calls for a “sound allowance” software to be included in all audio devices，to tra
15、ck the volume level and duration of a users exposure to sound，and to evaluate the risk posed to their hearing.This system could alert a user if they have dangerous listening habits.WHO is also calling for parental as well as automatic volume controls on audio devices to prevent dangerous use.While s
16、ome smartphones and other audio devices already offer some of these features，the UN would like to see a uniform standard used to help protect against disabling hearing loss.“Think of it like driving on a highway，but without a speedometer in your car or a speed limit，” Shelly Chadha of the WHO told r
17、eporters in Geneva.“What weve proposed is that your smartphones come fitted with a speedometer，with a measurement system which tells you how much sound youre getting and tells you if you are going over the limit”【语篇解读】本文属于新闻报道，主要介绍由于过度使用电子产品，长期暴露在过高音量的环境中，超过10亿年轻人面临听力丧失的风险，因此联合国提议为安全音量设定新的安全标准。5What
18、 is the purpose of proposing new safe volume standards?ATo warn people of dangerous listening habits.BTo help protect against disabling hearing loss.CTo promote the development of audio devices.DTo prevent the manufacture and use of audio devices.B推理判断题。根据第一段“More than one billion.new safety standar
19、ds for safe volume levels.”可知，超过10亿的年轻人由于过度使用手机和其他音频设备面临听力丧失的危险，因此联合国提议为安全音量设定新的安全标准，故可知，设定新标准是为了预防年轻人的听力丧失，故选B。6Where can you find the data that best supports “young people risk damaging their hearing through the overuse of smartphones”？AIn Paragraph 2.BIn Paragraph 3.CIn Paragraph 4.DIn Paragraph
20、5.A推理判断题。根据第二段“Young people are particularly likely.listen to through personal audio devices”可知，年轻人更有可能形成危险的听力习惯，将近一半的年龄在12至35岁的人，由于长时间暴露在过高音量的环境中，面临听力丧失的危险，故第二段可以证明年轻人面临听力丧失危险，故选A。7What do we know about safe volume levels according to Paragraph 3?AIt is safe to listen to music under any circumstanc
21、es.BIt is important to keep track of the risk for the users.CIt is necessary to have users alerted by their parents.DIt is acceptable to keep the volume at 90 decibels for 15 minutes.D推理判断题。根据第三段“WHO considers a volume above 85 decibels for eight hours or 100 decibels for 15 minutes as unsafe.”可知，世界
22、卫生组织把连续八小时暴露于85分贝以上行为或者暴露于100分贝15分钟的行为定义为不安全，故可以推出，暴露于90分贝15分钟是安全的，故选D。8What is the best title for the text?ATurning Down the VolumeBMaking Good Use of SmartphonesCThe Rise and Fall of Audio DevicesDThe Safety Standards for Volume LevelsA主旨大意题。文章主要介绍由于过度使用电子产品，长期暴露于过高音量的环境中，超过10亿年轻人面临听力丧失的风险，因此联合国提议
23、为安全音量设定新的安全标准。主要讲述过高音量的危害，呼吁降低音量，故选A。.读后续写阅读下面材料，根据其内容和所给段落开头语续写两段，使之构成一篇完整的短文。Located halfway up the Italys Apennine Mountain，about 100 miles northeast of Rome，the Hotel Rigopiano has never been easy to reach.But its isolation(隔绝)only adds to its appeal，attracting a great number of tourists.Snow be
24、gan to fall across the Apennines in January and lasted for days.From his home in the Rome suburbs，Matrone watched the weather with concern.He and his wife，Cicioni，had planned an overnight getaway to the hotel.But now he wondered whether they should go.After phoning the hotel，they decided to make the
25、 trip.By the time they neared the hotel six hours later，they were battling a snowstorm.When they finally arrived，they were both cold and exhausted.They checked into their room and went to bed early.As they awoke the next day，they discovered that their difficulty had worsened overnight.The cars in th
26、e parking lot were invisible.The phone and power lines were down.They were having breakfast when the hotel began to shake.An earthquake with a magnitude(震级)of 5.7 had struck the mountain.“Get out of here！”Matrone shouted to his wife.They headed quickly to the parking lot，where others were digging th
27、eir cars.Fifteen minutes after the first earthquake，another quake hit，this one measuring 5.6.With a dozen vehicles freed by noon，the guests set off down the driveway.But when they reached the main road，the path was blocked by a sixfoothigh wall of snow.Matrone climbed out of his car and investigated
28、 it.There was no road in sight，“Were trapped！”he told his wife.So they had no choice but to make their way back to the hotel.As it was getting dark，they managed to be back.That was when the snow on the mountain began to slide.They heard the avalanche(雪崩)before they saw it.The avalanche gathered spee
29、d and size，grabbing rocks and trees and anything else in its way down the mountain，tearing the hotel from its foundation.When the avalanche came to a stop，those caught inside the hotel were left buried in the icy rocks and ruins.注意：1.续写词数应为150左右；2请按如下格式作答。When Matrone came to himself，he was stuck in
30、 the darkness. It was not until the next morning that the rescuers finally arrived. 【参考范文】When Matrone came to himself, he was stuck in the darkness.Lying on his stomach, he realized with horror that he was under something heavy and couldnt move at all.“Cicioni! Cicioni！” he called, but there was no
31、 response.He could hear nothing of what was happening at the surface.The whole world was dead still.What he had to face was a terrible realitythey were buried alive.Despair washed over him.He asked himself again and again, “Who is going to save us？”It was not until the next morning that the rescuers
32、 finally arrived.Without any hesitation they got down to detecting the remains of the hotel and they were delighted to discover there was sign of life beneath.With great efforts they removed the thick snow and began cutting the roof.Then they carefully lowered themselves through the hole theyd made.Suddenly, they heard someone crying for help in a weak voice.It was Matrone.Later all the survivors were rescued including Matrones wife.The couple felt really lucky to be still alive!
