2024年衡水金卷分科综合卷 老高考英语三全国二卷

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28.What is the purpose of the first paragraph?A.To explain the portrait.B.To express a request.C.To ask a qucstion.D.To introduce the topic.29.How did Peterson feel when just arriving at his new home?A.Messy.B.Bothered.C.Delighted.D.Relaxed30.What does the underlined word"weirdest"in Paragraph 5 probably mean?A.Strangest.B.Hardest.C.Well known.D.Most beautiful.31.What caused the foundation of Faces of Santa Ana?A.Peterson's relation to Faris.B.Profits from selling paintings.C.Colors based on the personality.D.Peterson's powerful portraits.0Biodegradable(可生物降解的)food packaging could remind people of spoiling(腐烂的)food by its changing color.Best-before labels(保质期标签)are often poor predictors of when food becomes dangerousto eat,which can lead to waste and food poisoning,says Benedetto Marelli at the MassachusettsInstitute of Technology.So,he and his colleagues tried to create wrap that can react to changesin food.They made four films (similar to plastic wrap,each consisting of two layers ()One layer was made from a protein obtained from silkworm silk,while the other was made ofone of four so-called covalent (organic frameworks (COFs).These materials containcarbon and hydrogen,as well as atoms like oxygen or nitrogen,all arranged in a gridthat makes the material porous(透气的).After checking the films were strong,the researchers tried to compost (them.For thebest-performing film,50%of it degraded after being placed in soil for 30 days,which iscomparable to existing biodegradable plastics.The material also changed color when put in liquid with different pH values,due to theCOF layer's interaction with the liquid.Because the pH of food increases as it spoils,theresearchers tried to use a piece of the film as a color-changing label attached to a packet of rawchicken.The label started off orange but turned yellow and got 17%lighter after 20 hours at30C,indicating that the meat had begun to spoil.The researchers also loaded the COF layer with an antimicrobial chemical.After15 days,soya beans packaged in the film and left in high heat had about a third as much mould(as beans wrapped in traditional plastic.To make a real impact,the material will need to be affordable and casy to producc."The barfor competing with plastic products is very high,"says Marelli.32.How did the new wrap begin?A.From best-before label.B.From making four films.C.From weighing the waste.D.From measuring temperature..-共语试卷第6页（共10页）