2021版高考英语大一轮复习 Unit 2 Cloning练习 新人教版选修8

unit 2cloning.阅读(2019山西临汾第一中学高三模拟)in an effort to discourage people from using plastics,scientists have been hard at work inventing alternative packaging products.from water bottles made from seaweed to cutlery(餐具) made from rice and wheat,a number of inventions are set to change the way we eat while we are on the go,or having a relaxing picnic in the park.the idea of using seaweed to make eco-friendly water bottles has been around for a few years.recently,ari jonsson took his inventiona water bottle made from red seaweedto show off at a festival.the bottles will only hold their shape as long as they are filled.as soon as these bottles are empty they will begin to break down,though they would be perfectly safe to eat.ari jonssons bottles are a step closer to a widely used alternative to the current plastic ones.the eatable water container is not the only product to add to our image of the future.narayana pessapaty has also created eatable spoons.after the success of his spoons,mr.pessapaty is ready to expand and introduce forks and chopsticks to his menu.his aim is to largely reduce the amount of plastic waste,which is a huge problem for waste sites all over the world.it is a product that may take up to 500 years to break down,and recycling companies worldwide are struggling to deal with it.aside from the obvious benefits to the environment,this new packaging is also cheap to produce and therefore cheap to buy.even better is the fact that similar eatable cutlery can be made at home,possibly a science project for children or just fun with friends.why not experiment and create your own recipes?1.why do scientists invent alternative packaging products?a.to make peoples life more convenient.b.to show off their inventive talents.c.to change the way we picnic outside.d.to reduce the amount of plastic waste.2.what makes ari jonssons water bottles eco-friendly?a.they can be made at home.b.they are cheap to produce and buy.c.they will hold their shape when they are filled.d.they will break down themselves when empty.3.what do ari and narayanas inventions have in common?a.they are convenient to carry. b.they are safe to eat.c.they can be used for a short time.d.they are heavier than plastics.4.what can be inferred from this passage?a.home-made eatable cutlery is likely to be popular.b.eatable cutlery will completely replace plastics in the near future.c.no recycling companies can break down plastic waste.d.its unsafe for individuals to invent eatable cutlery at home.语篇解读:本文是一篇说明文。文章介绍可以吃的环保餐具。这些家用食用餐具很可能是受欢迎的。答案及剖析:1.d细节理解题。根据第一段第一句“in an effort to discourage people from using plastics,scientists have been hard at work inventing alternative packaging products.”可知科学家发明可替代的包装产品是为了减少塑料废品。故选d。2.d细节理解题。根据第二段第四句“as soon as these bottles are empty they will begin to break down,though they would be perfectly safe to eat.”可知ari jonsson的水瓶空的时候自动毁掉,所以他的水瓶是环保的。故选d。3.b细节理解题。根据第二段第四句后半句“though they would be perfectly safe to eat.”再根据第三段二、三句“narayana pessapaty has also created eatable spoons.to his menu.”可知他们发明的共同点就是能安全地吃。故选b。4.a推理判断题。根据最后一段第二句“even better is the fact that similar eatable cutlery can be made at home,possibly a science project for children or just fun with friends.”可知国产食用餐具很可能是受欢迎的。故选a。.七选五(2019宁夏石嘴山第三中学高三模拟)how to stay focused in a noisy worldblock out time for uninterrupted work.make sure you schedule important time for yourself where you can focus on your tasks in uninterrupted silence.1. think of this as scheduling a meeting with yourself and treat it the same as you would when scheduling a meeting with others.turn technology from a distraction into a useful tool.2. however,there are also some really cool apps that encourage you to be more productive and less distracted by your phone.forrest is an app that rewards you each time you focus well,motivating you in a fun way and encourages you to leave your phone well alone.schedule a distraction time.just as important as scheduling focus time is scheduling distraction time.3. more specifically,the most productive employees spent 52 minutes working followed by a 17-minute break each time.this is down to the brains ability to stay motivatedit just cant sustain(维持)long periods of focus and concentration.practice mindfulness.mindfulness trains your mind to identify thoughts that arise throughout your day.mindfulness practice can be done at any time.4. when reading,really take in every word or while out walking notice how your body feels and the details of your surroundings.doing this on a regular basis will eventually train your mind when it comes to other areas where distracting thoughts pop up like a work task.exercise regularly.not only is exercise good for the body but its also good for the brain.physical exercise fires up the neurons in the brain making you more willing to concentrate.5.a.its difficult to focus on your work.b.we need to get rid of distractions around us.c.these days,many people feel controlled by their phones.d.a study found that regular breaks was the key to productivity.e.when you eat your food,notice the taste and how it looks and feels.f.let people know that you wont respond unless its absolutely necessary.g.this means it increases your ability to ignore distractions and get on with the task at hand.答案:1-5fcdeg.完形填空i feel that i was blessed by an angel not long ago.i was out in town with my husband.we live in a 1 town.because of the cold,my 2 shrunk,causing my anniversary ring to 3.i didnt notice this until we got home.i became physically ill ached all over.i thought my husband was going to have a heart attack.although it is a material item,it is yet very 4.he went out and retraced our 5 to where we came back.i called the stores we were in and no one turned it in.i thought it was 6 for sure.well,at around midnight last night,our dogs went mad.we have a sunroom 7 to our home.the door to that is usually 8.but that night,we left it unlocked.my all-terrain motor scooter(小型摩托车)was 9 out there.in its basket was a ring boxholding my ring!along with the ring was a diamond circle.there was also a note that told the story of this stranger 10 the ring and recognizing the work,as it is a piece made particularly.the person then went to the jeweler and 11 about finding the ring.the jeweler is a friend of mine so she gave her my name and the town is so small,we are 12 to find.the stranger who found the ring 13 the ribbon(丝线)in the store in order to keep the ring around the finger when it is 14 out.and then also left a gift card for us to take our family out to the movies as a christmas gift.the note was signed “santas elf(小精灵)”.my friend is keeping her lips 15 about whom it was.1.a.modern b.small c.big d.developed2.a.ring b.hand c.brain d.finger3.a.fall offb.leave behindc.break downd.go away4.a.valuableb.challengingc.memorable d.beneficial5.a.footprintsb.steps c.streets d.directions6.a.gone b.stolen c.changed d.transformed7.a.adapted b.attached c.exposed d.held8.a.open b.abandoned c.closed d.locked9.a.made b.parked c.repaired d.destroyed10.a.handlingb.exploring c.finding d.chasing11.a.explainedb.complainedc.wondered d.argued12.a.difficultb.easy c.incredibled.complex13.a.purchasedb.tore c.sold d.borrowed14.a.warm b.rainy c.foggy d.cold15.a.tight b.painted c.secret d.clear语篇解读:这是一篇记叙文。作者不小心弄丢了戒指,捡到戒指的好心人找到了戒指的主人也就是作者,将戒指放在她的车里并附上了一个纸条写着找寻戒指主人的经过。答案及剖析:1.b根据最后一段的“the town is so small”可知作者所在的城镇很小(small),故选b。2.d根据后文可知作者的周年纪念戒指丢了,戒指是戴在手指(finger)的,因为寒冷,手指收缩了戒指才会掉,故选d。3.a因为寒冷,戒指从手指