2021版高考英语大一轮复习 Unit 3 Computers练习 新人教版必修2

unit 3computers.阅读a(2019福建厦门第一中学模拟)bill gates recently predicted that online learning will make place-based colleges less significant,and five years from now,students will be able to find the best lectures in the world online.i applaud mr.gates.but whats taking us so long?as early as 1997,mit (麻省理工学院) decided to post videos of all university lectures online,for free,for all people.but today,how many students have you met who mastered advanced mathematics or nuclear physics from an mit online video?unfortunately,the answer is not many.the problem is the poor quality of online education websites and the experience they provide to students.those who go to the mit website and watch courses online are surely very smart people,but its not like playing a video game such as world of warcraft.only the most ardent students,those who are highly motivated,will devote themselves to studying these boring online videos.the real question is why we arent spending more to develop better online education platforms.where is the avatar of education?think about this.the market for hollywood films per year is worth around 30 billion usd.education in the world is a trillion-dollar-a-year market,hundreds of times bigger than hollywood movies. yet the most expensive digital learning system ever built cost well under 100 million dollars.bill gates prediction is going to happen.there is no doubt about it.but it will only happen when we create high level educational content and experiences that engage and excite more than has ever been possible in the real world.1.what has bill gates forecast about online learning?a.it will concentrate on physics lectures. b.it will completely replace real universities.c.it will help to make universities more successful.d.it will play an increasingly important role in education.2.what does the underlined word “ardent” in paragraph 3 mean?a.creative. b.enthusiastic.c.well-behaved.d.experienced.3.according to the author,what is holding back the popularity of online learning?a.the lack of lectures available online.b.the high cost of access to the websites.c.the low standard of educational websites.d.the competition with online computer games.4.why does the author mention hollywood?a.to show that hollywood produces many successful movies.b.to prove that education is more profitable than entertainment.c.to argue that movie directors should produce educational content.d.to urge that more money be spent developing educational websites.语篇解读:本文是一篇应用文。文章主要介绍了比尔盖茨预言网上学习将会变得越来越重要。答案及剖析:1.d推理判断题。根据第一段中的“bill gates recently predicted that online learning will make place-based colleges less significant”可知,比尔盖茨预言在线学习将使得实体院校学习重要性降低,即他认为在线学习将在教育上扮演越来越重要的角色。2.b词义猜测题。画线词后的“those who are highly motivated”是对前面画线词的解释,此处指的是那些积极上进的学生,也就是有热情的学生。3.c细节理解题。根据第三段第一句“the problem is the poor quality of online education websites and the experience they provide to students.”可知,低质量的在线教育网站阻碍了网上学习的普及。4.d推理判断题。根据倒数第二段首句“the real question is why we arent spending more to develop better online education platforms.”以及后面提到好莱坞投入大量的资金来发展网络教育可知,作者是以好莱坞为例,说明应该投入更多的资金来发展网络教育平台。b(2020山东模考)heads up!across the country,sports injuries are a safety concern for young athletes.now,the american medical association (ama) has a new set of guidelines aimed at protecting players from the danger of concussionsserious injuries caused by a blow to the head.“by raising awareness of the serious risks associated with concussions and ensuring that the appropriate guidelines are in place,we can reduce the number of young athletes who may return to the game too soon,which can put their health at further risk,” said ama board member jack resneck jr.,m.d.,in a statement.the policy recommends that young athletes who may have a concussion be taken off the field as soon as possible.then,they are only to return to their sport with a doctors written approval.the policy also sets age-specific rules for health care professionals and athletic organizations in evaluating and caring for concussions. according to the center for disease control and prevention (cdc),a concussion is a type of traumatic(创伤) brain injury caused by a bump,blow,or jolt to the head or hit to the body that causes the head and brain to move rapidly back and forth.this type of movement can cause the brain to bounce around or twist inside the skull(颅骨).it can damage brain cells and create chemical changes in the brain.the cdc says that between 1.6 million and 3.8 million traumatic brain injuries caused by sports and recreation-related activities occur in the us every year.a study from the center for injury research and policy showed that as many as 40% of high school athletes return to playing before they should.the amas new guidelines should help to bring those numbers down.5.why does the ama set the new guidelines?a.to raise safety standards of sports.b.to protect athletes from concussions.c.to set rules for health care evaluation.d.to help players return to the game quickly.6.what should young athletes who may have a concussion do?a.avoid using the head. b.leave the field forever.c.get treatment in time.d.switch to another sport.7.what is paragraph 4 mainly about?a.what a concussion is.b.what causes damage to brain cells.c.how the cdc works.d.how a concussion can be prevented.8.which of the following is the best title for the text?a.rules for safer playb.sports injuries in the usc.advice to athletesd.new policies for doctors语篇解读:本文是一篇新闻报道。主要讲了美国医学协会制定了一套指导方针,旨在保护运动员免受脑震荡的威胁。答案及剖析:5.b细节理解题。根据第一段中的第二句now,the american medical association (ama) has a new set of guidelines aimed at protecting players from the danger of concussions.可知,美国医学协会制定新的指导意见,旨在保护运动员免受脑震荡的威胁。6.c推理判断题。根据第三段第一句the policy recommends that young athletes who may have a concussion be taken off the field as soon as possible.可知,可能患有脑震荡的年轻运动员应尽快离开赛场接受治疗。7.a段落大意题。根据第四段中的a concussion is a type of.可知 ,本段主要是介绍脑震荡是什么,故答案为a。8.a主旨大意题。根据文章第一段制定了一项旨在保护运动员免受脑震荡危险的新的指导方针,可知本文围绕这项有关运动安全的指导方针展开,故a项为最佳标题。.语法填空ebay is the worlds online marketplace,1. enables individuals and small business to trade on a local,national and international basis.2. (found) in september 1995,ebay provides a platform (平台) 3. the sale of goods and services to more than 135 million registered members from all around 4. world.globally,ebay has more than 44 million items (项目) listed for sale at any one time.and an additional 4 million items 5.(add) daily.there are more than 50,000 kinds,including computers,art,toys,stamps,magazines,music,glass,electronics,jewelry,e-books and so on.electronic (电子的) books or e-books are texts designed to be read only on a computer screen.the greatest advantage of e-books is that you can get the relevant information at the press of a button.6.(buy) e-books on ebay is easy.you can order e-books online and they will be delivered (交付) 7.(electronical) to your computer,so you can save money