2024年衡水金卷先享题 分科综合卷 全国乙卷 英语(一)答案

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考点专项突破专项训练12阅读之说明文（四）阅读下列短文，从每题所给的A、B、C、D四个选项中选出C.Food Packaging Improves With New Sensors最佳选项。D.It Is Easy to Warn People of Possible DiseaseABSensors in packaging could someday warn you about rottenPaleontologists(古生物专家)at the University of Albertafood in time to keep you from eating it.The plastic patches(have developed a new theory to explain why the ancientH)could detect bacteria that might poison diners.ancestors of dinosaurs stopped moving about on all fours andCarlos Filipe is a chemical engineer at McMaster University inrose up on just their two back legs.Hamilton,Canada.He and his team developed the new sensors.Bipedalism(直立行走)in dinosaurs was inherited(遗传)The sensors give off what's known as fluorescence().Theyfrom ancient and much smaller proto-dinosaurs."The tails oftake in energy at one wavelength and give off it as a glow()atproto-dinosaurs had big,leg-powering muscles,"says Persons.another wavelength.You can't see that glow under normal light.Having this muscle provided the strength and power required forYou have to shine an ultraviolet(紫外线的)lamp or a fluorescenceearly dinosaurs to stand on and move with their two back feet.scanner to detect it.Over time,proto-dinosaurs evolved to run faster and forThe new sensors are about the size of postage stamps.longer distances.Adaptations like longer back legs allowed ancientThe researchers tested these plastic patches on meat and applejuice hosting Escherichia coli(大肠杆菌).The sensors lit updinosaurs to run faster,while smaller forelimbs()helped tobrightly.But when the sensors were touching untainted foodreduce body weight and improve balance.Eventually,some proto-samples,they didn't glow.dinosaurs gave up walking on fours altogether.Other scientists have developed tools to detectThe research,conducted by Persons and Phil Currie,fluorescence that can attach to a smart phone.These devicespaleontologist and Canada Research Chair,also exposes(are only the size of a matchbox.People could use themtheories that early proto-dinosaurs stood on two legs for theto check packaged food at home before opening it,Filipe says.only purpose of freeing their hands for use in catching prey(If the food sensor was glowing,a person would know the food)But,if it is true that bipedalism can evolve to helpwas unsafe.Grocery stores could also provide scanners soanimals run fast,why aren't mammals(哺乳类)like horsescustomers could check a food before buying it.bipedal?"Largely because mammals don't have big tail-basedNext up,the McMaster group plans to make films()leg muscles,"Persons explains.Looking across the fossil(that glow near other dangerous bacteria,says Tohid Didar,arecord,we can follow when our proto-mammal ancestorsmechanical engineer on the team.One of those bacteria mightactually lost those muscles.It seems to have happened back inbe Salmonella that can cause fever and other health problems.the Permian period,over 252 million years ago.Foodborne illnesses such as Salmonella and EscherichiaThe researchers also theorize that living in caves may havecoli kill some 420,000 people worldwide each year,accordinghelped our ancestors to survive a mass extinction()thatto the World Health Organization.But food packaging withoccurred at the end of the Permian.But when proto-mammalsbuilt-in microbe monitors might warn people of rotten foods socame out from their caves,and some eventually evolved to bethat they can stay away from them.fast runners,they lacked the tail muscles that would have1.What does the author say about the new sensors?caused them towards bipedalism.A.They are widely used.5.What helped dinosaurs walk with two legs?B.They are user-friendly.A.Big tail-based leg muscles.C.They consist of different wavelengths.B.Strong and powerful back legs.D.They give off light easy to see2.Which of the following best explains "untainted"underlinedC.Big and powerful muscles in legs.D.Two legs with leg-powering muscles.in paragraph 3?A.Nutritional.B.Abnormal.6.Why did early proto-dinosaurs stand on two legs according toC.Healthy.D.Safe.the research?3.What does the author intend to show in the last paragraph?A.To run faster and farther.A.The importance of the new devices.B.To promote balance.B.The dangers of Foodborne illnessesC.To reduce body weightC.The demand for safe food packagingD.To catch prey better.D.The reason for avoiding rotten foods7.What does the underlined word"those"in paragraph 4 probably4.What could be a suitable title for the text?refer to?A.New Sensors Make Packaging SaferA.Smaller forelimbs.B.Big tail-based legsB.New Sensors Show Bad Food With a GlowC.Strong bodies.D.Two back feet.23