题目内容

9.-Are you still waiting to make a phone call?
-Yes.This woman       on the phone for the last twenty minutes.(  )
A.is talkingB.was talking
C.has talkedD.has been talking

分析 句意:--你还在等着打电话吗?--是的,这位女士已经打了二十分钟电话了.

解答 答案D."be doing"现在正在做某事;"was/were doing"过去的某个时间点或时间段正在做某事;"have/has done"过去发生的动作对现在的影响;"have/has been doing"表示过去发生的动作一直持续到现在,可能刚刚结束,也可能继续持续下去.根据句意,:--你还在等着打电话吗?--是的,这位女士已经打了二十分钟电话了.说明这位女士已经打了二十分钟电话,有可能还会继续进行下去,故用现在完成进行时,选D.

点评 本题考查现在完成进行时,要掌握其用法并结合具体的语境选择出正确的选项.

练习册系列答案
相关题目
2.An Extension of the Human Brain
   Other people can help us compensate for our mental and emotional deficiencies (欠缺),much as a wooden leg can compensate for a physical deficiency.To be exact,other people can extend our intelligence and help us understand and adjust our emotions.When another person helps us in such ways,he or she is participating in what I've called a"social prosthetic (义肢的)system."Such systems do not need to operate face-to-face,and it's clear to me that the Internet is expanding the range of my own social prosthetic systems.It's already a big bank of many minds.Even in its current state,the Internet has extended my memory and judgment.
Regarding memory:Once I look up something on the Internet,I don't need to keep all the details for future use-I know where to find that information again and can quickly and easily do so.More generally,the Internet functions as if it were my memory.This function of the Internet is particularly striking when I'm writing; I'm no longer comfortable writing if I'm not connected to the Internet.It's become natural to check facts as I write,taking a minute or two to dip into PubMed,Wikipedia,or other websites.
Regarding judgment:The Internet has made me smarter in matters small and large.For example,when I'm writing a textbook,it has become second nature to check a dozen definitions of a key term,which helps me dig into the core and understand its meaning.But more than that,I now regularly compare my views with those of many others.If I have a"new idea,"I now quickly look to see whether somebody else has already thought of it,or something similar-and I then compare what I think with what others have thought.This certainly makes my own views clearer.Moreover,I can find out whether my reactions to an event are reasonable enough by reading about those of others on the Internet.
These effects of the Internet have become even more striking since I've begun using a smartphone.I now regularly pull out my phone to check a fact,watch a video,read weibo.Such activities fill the spaces that used to be dead time (such as waiting for somebody to arrive for a lunch meeting).
But that's the upside (好处).The downside is that in those dead periods I often would let my thoughts flow and sometimes would have an unexpected insight or idea.Those opportunities are now fewer and farther between.
An  Extension of the Human Brain





A  prosthetic nature
●The (71)Internetcan help make up for our mental and emotional deficiencies as a wooden leg can compensate for a bodily deficiency.
●It(72)participates/joinsin our daily events extending our intelligence,
Comprehending our feelings,and expanding the range of social
Activities.





Wonderful aspects
Memory and judgment
●On the Internet,we could quickly and easily locate the details,and check facts,without(73)keepingthem in mind.
●The internet makes us smarter over(74)all/different/variouskinds of things.It provides a dozen definitions of a key term for us to find the (75)heart/coreof the matter.
●The Internet enables us to exchange ideas with many others to (76)checkour claims,and to (77)judgeour actions.





The (78)mixed/twosides of smartphones
●Smartphones make it easier and more (79)convenientto check reality,video clips,read uxibo.
●Smartphones(80)reducethe possibility for new and insightful minds,and steal away our dead time.

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网