阅读理解提升练(五)A(2018浙江余姚中学高三押题卷一)Suppose that you,a college student of somewhat limited means,are in the market for a used pickup truck.The following ad in a local used car publication catches your eyes.2013 Ford Ranger,bilk,4WD,a/c,AM/FM/cass.,showroom condition.Call 205-1234 after 5 p.m.This is exactly the kind of vehicle you want,so you call to inquire about the price.The price you are quoted over the phone is $2,000 lower than the price for this model with this equipment listed in a used car guidebook.Instead of being overjoyed,however,you are suspicious.For many products,when you must pay less than the going rate,you believe you are getting a great deal.This is not necessarily the case for used cars or other durable goods (washing machines and television sets,for example) because with expensive productsor,what is essentially the same thing,products with high replacement costsyou must be particularly careful about getting a “lemon ”,or a product of substandard quality.In addition to asking the price,the age of a caror any other consumer durableis a factor when you are trying to determine whether a seller is attempting to unload a lemon.While people have all sorts of reasons for wanting to sell their carseven relatively new carsmost people hold off until they have put many thousands of miles on a car or until the used car is several years old.You would probably be as suspicious of a car that is “too new” as you would a car that is “too good” a deal.In fact,you are probably willing to pay a high price for a high-quality used car.While this price would certainly be acceptable to the seller,the competitive market might not facilitate such trades.1.According to the passage,why will you feel suspicious rather than overjoyed when you find a product of an unexpectedly low price?A.Because the product is probably not the exact kind you want.B.Because you dont believe you can really get a good deal in the second-hand market.C.Because you are afraid that you might get a lemon unloaded by the seller.D.Because you are actually willing to pay a higher price for the product.2.Which of the following items might be a “lemon” referred to in the passage?A.Some rotting fruit.B.A brand new washing machine.C.A second-hand TV set of high quality.D.A light-van of low quality.3.When you are looking for a proper used car in the market,you should .A.take the age of the car into considerationB.always put the quality of the car at priorityC.consider the age as well as the price of the carD.consider how many miles the car has runB(2018浙江学军中学高考冲刺)Lack of electricity and resources in disadvantaged regions around the world means no centrifuge (离心机) in medical labs.Now,a simple new 20-cent invention could change all that.Its based on an unusual source of inspiration:the whirligig(陀螺).Manu Prakash is a physical biologist at Stanford and the inventor of the new product.When he visited Uganda in 2013 he found that the clinics had neither centrifuges nor the electricity to power them.He realized that he needed to design a human-powered centrifuge that costs less than a cup of coffee.When he returned to Stanford,Prakash began brainstorming ideas with his assistant,Saad Bhamla.They quickly concentrated on toys like yo-yos and whirligigs.“One night I was playing with a button and string.And out of curiosity,I set up a high-speed camera to see how fast a button whirligig would spin.I couldnt believe my eyes,” Bhamla recalled.The button was spinning at 10,000 to 15,000 revolutions per minute (rpm).The pair began designing small hand-powered centrifuges based on the whirligig principle.Their final model was the Paperfuge.It spins at 125,000 rpm,the same as a centrifuge costing $1,000 to $5,000.The Paperfuge is made of a disk of paper coated in a polymer(聚合物).The disk is attached to two pieces of wood or PVG pipe via strings.When the strings are pulled,the disk in the middle spins.This acts as a centrifuge for a blood sample attached to the center of the disk.The team describes their work in the journal Nature Biomedical Engineering.Once the blood is separated,it needs to be examined by a microscope.Luckily,several years ago Prakash also created the Foldscope.It is a $1 paper microscope with optical quality similar to conventional microscopes that will begin distribution this year.4.Why did Manu Prakash invent the Paperfuge?A.To help the clinics in Uganda.B.To make traditional toys popular again.C.To make it affordable for poor areas.D.To transport electricity more conveniently.5.Which of the following words can best describe Manu Prakash?A.Creative and sympathetic.B.Ambitious and determined.C.Brave and considerate.D.Sensitive and modest.6.What does Paragraph 5 mainly tell us about the Paperfuge?A.How much it costs.B.How it works.C.What it is made of.D.Where it is applied.CDo you feel lucky?You probably dont.You may think youve got whe