He is really nervous．He back and forth all the night waiting for the results．( )A．had walkedB．has been walkingC．walkedD．is walking 题目和参考答案——青夏教育精英家教网—

题目内容

20．He is really nervous．He ______ back and forth all the night waiting for the results．（　　）

	A．	had walked		B．	has been walking
	C．	walked		D．	is walking

分析他很紧张．他整夜在来回地走，等待结果．

解答答案是B．本题考查现在完成进行时．由第一句中的动词时态判断说明的是"现在的情况"，所以排除A和C；现在完成进行时表示表示从过去某时开始到现在这一段时间里一直延续着的动作还在继续进行；本句不只是说明现在在进行中，而是说明一整夜一直在来回地走，并且还在来回走动中，故选B．

点评完成进行时的解题首先要理解其时态的基本用法--表示从过去某时开始到现在这一段时间里一直延续着的动作，特别关注其"在进行中"的特征；然后在语境中寻找动作的时间依据进行判断．

练习册系列答案

17．The day before yesterday，I had the pleasure of visiting with Deputy Superintendent Pedro Martinez，Principal Neddy Alvarez and her staff at Western High School，located in the Clark County School District，in Las Vegas．The school undertook a comprehensive effort to completely transform the culture of the school and added a motivated group of talented teachers．Western altered（改变） the school day to add opportunities for students to get additional credits toward graduation and created smaller learning groups．As part of these comprehensive changes，the school's leadership also focused on four main reforms to transform their school．
First，improvements started with the change in the relationship between the school and students to create a caring atmosphere at the school．Using the"Capturing Kids'Hearts"strategies，school leadership and teachers began building a trusting environment and students and families described seeing changes aimed at improving student outcomes and ensuring the success of every student．The school day was altered to add more options for students to obtain additional credits toward graduation．Students and teachers were grouped into"houses，"so that smaller groups of teachers and counselors（辅导员）could create one-on-one relationships with students．Teachers and counselors said that the altered school day provides time to address student's individual concerns and develop individualized learning plans to put every student on a path to graduation．
The school also made changes to encourage parents to support school and encourage real dialogues between parents and the teachers and leaders at Western．Funded in part through the United Way，the school created a family engagement center to get parents more involved in their children's education，particularly parents of English language learners．Parents like Ally Gaona and Martha Mendez told me that they had a voice and the tools to engage in their children's learning and that they recognize that the main responsibility for their children's learning must rest with the parents．
Parents were passionate about these positive changes and said that these changes signaled to the entire community that the school was serious about family engagement．
28．What is the main purpose of the passage？B
A．To attract parents and students to the school．
B．To talk about the school reforms．
C．To introduce the school programs．
D．To introduce the relationship between the school and the students．
29．How many main reforms are mentioned in the passage？C
A．Two
B．Three
C．Four
D．Five
30．Students and teachers were grouped into"houses"in order toA．
A．provide time to address student's individual concerns．
B．add more options for students to obtain additional credits toward graduation．．
C．create one-on-one relationships with students．
D．develop individualized learning plans to put every student on a path to graduation．
31．Which statement is right according to the passage？B
A．All the parents were engaged in the reforms．
B．The reforms intended to improve student outcomes and ensure the success of every student．
C．The school asked parents to donate their credits．
D．The school was serious about family and community engagement．

8．My friends，after they heard what had happened to the officials who travelled to India on the instruction of the Emperor Mingdi，______ said it sounded like an adventure．（　　）

15．-Ah，Anita．Is the design for the conference center ready？
-I _____ on it for over a month，but I haven't finished it yet．（　　）

	A．	worked		B．	had worked
	C．	have been working		D．	was working

5．Something has to be done to stop the rivers from being further polluted，_____？（　　）

12．Believe it or not，optical illusion（视错觉） can cut highway crashes．
Japan is a case in point．It has reduced car crashes on some roads by nearly 75percent using a simple optical illusion．But stripes，called chevrons（人字形），painted on the roads make drivers think that they are driving faster than they really are，and thus drivers slow down．
Now the American Automobile Association Foundation for Traffic Safety in Washington D．C．is planning to repeat Japan's success．Starting next year，the foundation will paint chevrons and other patterns of stripes on selected roads around the country to test how well the patterns reduce highway crashes．
Too great speed plays a major role in as much as one fifth of all serious traffic accidents，according to the foundation．To help reduce those accidents，the foundation will conduct its tests in areas where speed-related risks are the greatest curves，exit slopes，traffic circles，and bridges．Some studies suggest that straight，horizontal bars（水平杆）painted across roads can initially cut the average speed of drivers in half．However，traffic often returns to full speed within months as drivers become used to seeing the painted bars．
Chevrons，scientists say，not only give drivers the impression that they are driving faster than they really are but also make a lane appear to be narrower．The result is a longer lasting reduction in highway speed and the number of traffic accidents．

36．The passage mainly discussesD．
A．a new type of optical illusion
B．a new pattern for painting highways
C．a new way of training drivers
D．a new way of highway speed control
37．On roads painted with chevrons，drivers tend to feel thatB．
A．they should avoid speed-related danger
B．they should slow down their speed
C．they are driving in the wrong side
D．they are coming near to the speed limit
38．Compared with straight，horizontal bars，what is the advantage of chevrons？A
A．They will have a longer effect on drivers B．They can cut road accidents in half
C．They will look more attractive D．They can keep drivers awake
39．The American Automobile Association Foundation for Traffic Safety plans toD．
A．repeat the Japanese road patterns
B．change the road signs across the country
C．replace straight，horizontal bars with chevrons
D．try out the Japanese method in certain areas
40．What does the author say about straight，horizontal bars painted across roads？C
A．They are suitable only on broad roads．
B．They are falling out of use in the United States．
C．They are ignored in a long period of time．
D．They cannot be used successfully to traffic circles．

9．Do you find yourself leading groups，or are you naturally more comfortable following others？Research published today shows that if you want to be a leader you're better off at the edges of a crowd，and not in the middle of the action．
In a series of experiments on crowd behaviour，a research team at the University of Leeds also found that successful leaders display more decisive behaviour，spending less time following others and acting more quickly than others in the group．
Lead researcher Jolyon Faria said："It was interesting to find that the most effective leaders remained on the edges of the group and attempted to lead from the front．You'd think leaders in the centre of the group should interact more often with others and therefore be more effective but here this wasn't the case．"
The research team asked groups of eight students to walk around continuously in a specified area and remain as a group without speaking or gesturing to one another．
One person was asked to move towards a target，while remaining a member of the group，without letting the others know that he or she was leading them to a target．In a second set of experiments，the students were told to follow"the leader"，but not told who the leader was．
In the second set of experiments，it was found that those leaders who remained on the edge of the group were able to move their group towards a target much more quickly than the leaders that chose to remain in the centre．
"We wanted to find out how people decided who to follow"said Faria．"We found that people were able to identify their leader by what position the leader takes，which helps explain how animals in groups-such as birds and fish-can be led by only a small minority，even when leaders don't signal their identity．"
"Our findings have illustrated a general principle behind group behaviour．This can also be applied to animal groups，something that could help in the management of the natural environment，as well as in the management of the urban environment．"
（Note：Answer the questions and complete the statements in NO MORE THAN TWELVE WORDS．）

78．The decisive behavior successful leaders display in a group is that theyspend less time following others and act more quickly．
79．According to Jolyon Faria，people tend to have the wrong belief that leaders shouldstay in the center of the group and interact more with others in order to be more effective．
80．We can learn from the passage that the fish leaders may lead the whole group byremaining on the edges of the group．
81．What does"a general principle"refer to in the last paragraph？People can identify their leader by the position he takes．

10．When milk arrived on the doorstep
  When I was a boy growing up in New Jersey in the 1960s，we had a milkman delivering milk to our doorstep．His name was Mr．Basille．He wore a white cap and drove a white truck．As a 5-year-old boy，I couldn't take my eyes off the coin changer fixed to his belt．He noticed this one day during a delivery and gave me a quarter out of his coin changer．
    Of course，he delivered more than milk．There was cheese，eggs and so on．If we needed to
change our order．my mother would pen a note-"Please add a bottle of buttermilk next delivery"
-and place it in the box along with the empty bottles．And then，the buttermilk would magically appear．
    All of this was about more than convenience．There existed a close relationship between families and their milkmen．Mr．Basille even had a key to our house，for those times when it was so cold outside that we put the box indoors，so that the milk wouldn't freeze．And I remember Mr．
Basille from time to time taking a break at our kitchen table，having a cup of tea and telling stories
about his delivery．
    There is sadly no home milk delivery today．Big companies allowed the production of cheaper milk，thus making it difficult for milkmen to compete．Besides，milk is for sale everywhere，and it may just not have been practical to have a delivery service．
    Recently．an old milk box in the countryside I saw brought back my childhood memories．I
took it home and planted it on the back porch（门廊）．Every so often my son's friends will ask what it is．So I start telling stories of my boyhood，and of the milkman who brought us friendship along with his milk．
51．Mr．Basille gave the boy a quarter out of his coin changerC．
A．to show his magical power
B．to pay for the delivery
C．to satisfy his curiosity
D．to please his mother
52．What can be inferred from the fact that the milkman had the key to the boy's house？D
    A．He wanted to have tea there．
    B．He was a respectable person．
    C．He became the boy's family member．
    D．He was fully trusted by the family．
53．Why does home milk delivery no longer exist？B
    A．Nobody wants to be a milkman now．
    B．It has been driven out of the market．
    C．Its service is getting poor．
    D．It is forbidden by law．
54．Why did the author bring back home an old milk box？A
    A．He missed the good old days．
    B．He wanted to tell interesting stories．
    C．He needed it for his milk bottles．
    D．He planted flowers in it．

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