高中英语 课时分层作业3 Unit 4 Cyberspace 北师大版必修2.doc

课时分层作业(三)语言知识练习固基础.单句语法填空1to be honest，the pay isnt attractive(attract)enough，though the job itself is quite interesting.2she was the first in our class to break(break)the mold；instead of getting a job in education，she decided to become an accountant.3when the whole area was cut off by the flood，the government sent food and medicine there by helicopter.4the wine produced in new zealand is of top quality.5our deeds must consist with our words.6shooting became an olympic event officially(office) in 1896. 7with so many difficult problems to settle(settle)，the manager felt worried all the time.8at noon they got to a hill，on top of which stood a temple，dating back to hundreds of years ago.9on average，women live between five and seven years longer than men.10located(locate) at the southwest corner of our school，the botanical garden is spread over an area of about 1，000 m2.单句改错1she is not beautiful，but i find her very attractively because she seems so full of life and fun.attractivelyattractive2the football team，consisted of 22 players and three coaches，was set up about 3 years ago.consistedconsisting或在consisted前加which3the rest of the rice are stored in a dry bag.areis4its a pity that the medicine is little use.在little前加of或useuseful5we are all looking forward to see you again in the near future.seeseeing高考题型练习提能力.阅读理解asurfing the internet for fun will make you a better employee，according to an australian study.the university of melbourne study shows that people who use the internet for their own reasons at work are about 9 percent more productive than those who do not.study author brent coker said，“surfing the internet at times helps increase an employees attention.”“people need to relax for a bit to get back their attention，” coker said on the universitys website.“having a short break，such as a quick surfing of the internet，helps the mind to rest itself，leading to a higher total internet attention for a days work，and as a result，increases productivity (生产效率)，” he said.according to the study of 300 workers，70 percent of people who use the internet at work surf the internet for their own reasons during office hours.among the most popular surfing activities are searching for information about products，reading online news，playing online games and watching videos.“firms spend a lot of money on software to block their employees from watching videos，using social networking sites or shopping online，” said coker.“thats not always a good idea.”however，coker said the study looked at people who surfed the internet in moderation (适度)，or were on the internet for less than 20 percent of their total time in the office.“those who spend too much time surfing the internet will have a lower productivity than those without.” he said.【语篇解读】一项研究表明，员工上班时间适度使用网络可以提高生产效率。1what does the university of melbourne study mainly show?apeople who surf the internet are good employees.bnot everyone surfs the internet for fun during office hours.cthe internet is becoming more and more important in peoples life.dsurfing the internet for fun at times during office hours increases productivity.d细节理解题。根据第二段第一句可知，在上班时间使用网络可以提高生产效率。2which of the following is not mentioned in the passage as one of the most popular surfing activities?awatching videos.breading online news.creading online novels.dplaying online games.c细节理解题。根据第四段第二句可知c项未提到。3the underlined word “block” in paragraph 4 means astopborganizecprotectdseparatea词义猜测题。文章讲到公司让员工上班期间上网并休息一下，有助于他们恢复注意力和提高生产效率。还提到有些公司是花钱来阻止其员工上网、在网上看录像、玩游戏等，但这总不是办法。block阻止。4what can we infer from the last paragraph?athose who never surf the internet have the lowest productivity.bspending too much time surfing the internet reduces productivity.cmost people dont surf the internet in moderation during office hours.dpeople should spend as little time as possible surfing the internet.b推理判断题。根据最后一段最后一句可知，如果一个人上班期间上网的时间过多的话，那么他的生产效率就会降低。 bthe worlds biggest internet search engine，google，has proven once again to be king of the web.users can download“google wifi” software and then enjoy free wifi service available in some us cities since last tuesday.wifi is short for “wireless fidelity” (无线上网)it allows laptop computers and personal digital assistants to connect to the internet at high speed by radio signal.a person with a wifi enabled computer can connect to the internet when near one of the networks access points.the place covered by one or several access points is called a hotspot.google has already set up two “hotspots” in the us city of san francisco which provide a free wifi service.the wifi technology even allows users to enjoy a free internet phone service.some scientists argue that wifi may replace mobile phone networks.wifi is still limited to a few cities，where there are “hotspots”but its capability(容量)of sending information has already done better than that of the mobile phone network，even that of 3g (3rd generation telecommunication technology)some scientists have started to call wifi 4g.in addition to a high speed internet connection，wifi has other advantages compared to mobile phones.wifi is global.the same wifi system works in different countries around the world.different from using cell phones，you dont need to change computers to use internet phones when you go to other places and most importantly，many internet phones cost you nothing at all.【语篇解读】文章主要对无线上网技术作了介绍。5. wifi is not available in cities without aa computer ba radioca hotspot da cell phonec根据第三段第一、二句“a person with a wifi enabled computer can connect to the internet.by one or several access points is called a hotspot.”可知c项正确。6. which of the following is not the advantage of wifi?athe high speed internet connection.bmany free internet phones.cusing the same computers for internet phones.dused in all the us cities.d根据文章第一段第二句可知无线上网服务还只在美国一些城市适用，所以d项错误。7. some scientists started to call wifi 4g，because ait is the product of the googles 4th generationb. it is more capable of sending information than the mobile phone networkcit has been used by more than four generationsdwifi will surely take the place of the mobile phone networkb根据文章第五段第二句“but its capability(容量)of sending information has already done better than.”可知因为其容量大，才称之为4g，故选b。8. which of the following is the best title?athird generation telecommunication technologybfree call servicecgoogle launches free wifi servicedgoogle，king of the webc根据文章第一段内容可知，谷歌推出了免费的无线上网服务，下文则详细介绍了无线上网技术服务，故选c。.短文改错on a snowy winter night，a bus with 45 passenger had an accident because of the wet road.and all of them were trapping in the bus and what was better，the bus ran out of gas and it was very cold in it.they could do nothing but to wait for help.a man who lived nearby saw what happened.he and some villagers managed to open