Unit 3A healthy lifeA级:基础巩固.单词拼写1.She is continually (滥用)her position by getting other people to do things for her.答案:abusing2.After climbing from the first floor to the tenth floor,she was already b.答案:breathless3.He was(绝望的)when he lost all his money.答案:desperate4.Some students havent still got a to the new school life.答案:accustomed5.Smoking can be (上瘾的)to teenagers.答案:addictive6.The report (强调)that students math skills need to improve.答案:stresses7.Students are under a lot of (压力)from endless examinations.答案:stress/pressure8.There are still sex (偏见)in job seeking.答案:prejudice 9.Im (感到惭愧的)to be seen with you when you behave so badly!答案:ashamed10.The weather is (异常的)this year.答案:abnormal.句型转换1.He has the habit of staying up late and getting up late.He is staying up late and getting up late.答案:accustomed to2.Her son is so interested in playing computer games that he spends all his free time on it.Her son is computer games and he spends all his free time on it.答案:addicted to3.I wondered what you said to him to make him change his mind.I wondered how you persuade him.答案:managed to4.The heavy rain couldnt stop them from going out. the heavy rain,they still went out.答案:In spite of5.He is so strong that he can lift a heavy stone.He is to lift a heavy stone.答案:strong enoughB级:能力提升.阅读理解阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项。A new printed lifestyleImagine this:you get up in the morning and put on a custom printed T-shirt.Then you eat some 3-D printed food and relax on your printed sofa.Perhaps you take a ride in a printed electric car to the hospital to get a printed tooth fitted.Yet impossible as some of these things may seem,theyre closer to reality than you might think.The world of 3-D printing is coming to a store near you soon.The idea of 3-D printing is to produce complicated shapes in a very personalized way.If you want to make a totally new object,you need to make a virtual design in a CAD(computer aided design)file first.Or you can use a 3-D scanner to make a digital copy of an object.Then,based on the design or copy,the 3-D printer makes paper-thin slices out of liquid,plastic or metal and puts them together to create the object you want.There are many areas in which 3-D printing could change our lives.One such area is healthcare.Researchers have developed simple 3-D printed organs,which could be used in life-saving operations.A 17-year-old boy in the US has also recently developed a brain-powered,3-D printed replacement hand.From heart monitors to fake limbs(四肢),we could soon be living longer thanks to 3-D printed technology.Another area that 3-D technology looks sure to change is food.Can you imagine being able to print your favorite dishes at home at the touch of a button?Even big companies are behind the trend.Hersheys,one of the largest chocolate makers in the world,recently announced that it would start producing chocolate with the help of 3-D printers.And dont just think of the idea of 3-D printed food as a move to attract attention and customers.NASA,the US space agency,has reportedly spent $125,000(767,594 yuan)developing a “3-D pizza printer”.It is not yet clear how long it will take until 3-D printers are available to everyone.But one thing is for sure:the possibilities are endless.1.The purpose of the first paragraph is to .A.describe the benefits that 3-D printing has brought to all of our livesB.picture a future life with 3-D printing in wide useC.list some major 3-D printing breakthroughsD.give the history of 3-D printing解析:写作意图题。根据“Yet impossible as some of these things may seem,theyre closer to reality than you might think.”可知第一段中作者想象了未来3-D打印技术普及后人们日常生活的场景。这并不是真实生活中的情景,里面的技术也不一定是真实存在的。答案:B2.Compared with traditional manufacturing procedures,3-D printing .A.could produce complicated products in larger sizes or numbersB.has an advantage in meeting the personal needs of customersC.relies less heavily on the use of 3-D scannersD.produces separate parts of an object before joining them together解析:细节理解题。根据“The idea of 3-D printing is to produce complicated shapes in a very personalized way.”可知B项正确。根据“If you want to make a totally new object,you need to make a virtual design in a CAD(computer aided design)file first”可知C项太绝对。根据“.the 3-D printer makes paper-thin slices out of liquid,plastic or metal and puts them together to create the object you want”可知D项错误。答案:B3.We can infer from the article that .A.people can create any object they want,with any material,thanks to 3-D printingB.3-D printed organs and limbs are as effective as real onesC.big food companies are major players in the 3-D printing industryD.there could still be a long way to go before everyone can have access to 3-D printing解析:推理判断题。根据“It is not yet clear how long it will take until 3-D