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1、2021贵州在职攻读硕士联考考试考前冲刺卷（3）本卷共分为1大题50小题，作答时间为180分钟，总分100分，60分及格。一、单项选择题（共50题，每题2分。每题的备选项中，只有一个最符合题意） 1.设、是方程4x2-4mx+m+2=0的两个实根，则2+2的最小值是（）。A.0.5B.1C.1.5D.2E.以上结论均不正确2.不等式2x2+（2a-b）x+b0的解为x1或x2，则a+b=（）。A.1B.3C.5D.7E.以上结论均不正确3.已知方程2|x|-k=kx-3无负数解，那么k的取值范围是（）。A.-2B.一2≤k≤3C.2D.2≤k≤3E.k≥或k&le
2、;-24.若x1，x2是方程x2-3x=4的两个根，则|x1-x2|的值为（）。A.5B.-5C.-3D.3E.以上答案均不正确5.已知y=bx2+ax的图像开口向上，且对称轴在y轴右侧，那么y=ax-b的图像一定过（）。A.第一，二，三象限B.第一，二，四象限C.第二，三，四象限D.第一，三，四象限E.以上答案均不正确6.Amtrak (美国铁路客运公司) was experiencing a downswing in riders hip (客运量) along the lines comprising its rail system. Of major concern to Amtrak
3、 and its advertising agency DDB Needham, were the long-distance western routes where ridership had been declining significantly. At one time, trains were the only practical way to cross the vast areas of the west. Trains were fast, very luxurious, and quite convenient compared to other forms of tran
4、sportation existing at the time. However, times change and the automobile became Americas standard of convenience. Also, air travel had easily established itself as the fastest method of traveling great distances. Therefore, the task for DDB Needham was to encourage consumers to consider other aspec
5、ts of train travel in order to change their attitudes and increase the likelihood that trains would be considered for travel in the west. Two portions of the total market were targeted: 1) anxious fliersthose concerned with safety, relaxation, and cleanliness and 2) travel-loversthose viewing themse
6、lves as relaxed, casual, and interested in the travel experience as part of their vacation. The agency then developed a campaign that focused on travel experiences such as freedom, escape, relaxation, and enjoyment of the great western outdoors. It stressed experiences gained by using the trains and
7、 portrayed western train trips as wonderful adventures. Advertisements showed pictures of the beautiful scenery that could be enjoyed along some of the more famous western routes and emphasized the romantic names of some of these trains(Empire Builder, etc.).These ads were strategically placed among
8、 family-oriented TV shows and programs involving nature and America in order to most effectively reach target audiences. Results were impressive. The Empire Builder, which was focused on in one ad, enjoyed a 15 percent increase in profits on its Chicago to Seattle route.Whats the authors purpose in
9、writing this passageATo show the inability of trains to compete with planes with respect to speed and convenience.BTo stress the influence of the automobile on Americas standard of convenience.CTo emphasize the function of travel agencies in market promotion.DTo illustrate the important role of pers
10、uasive communication in changing consumer attitudes. 7.When I was walking down the street the other day, I happened to notice a small brown leather wallet lying on the sidewalk. I picked it up and opened it to see if I could find out the owners name. There was nothing inside it except some change an
11、d an old photographa picture of a woman and a young girl about twelve years old, who looked like the womans daughter. I put the photograph back and took the wallet to the police station, where I handed it to the desk sergeant. Before I left, the sergeant took down my name and address in case the own
12、er might want to write and thank me. That evening I went to have dinner with my aunt and uncle. They had also invited a young woman so that there would be four people at the table. Her face was familiar. I was quite sure that we had not met before, but I couldnt remember where I had seen her. In the
13、 course of conversation, however, the young woman happened to mention that she had lost her wallet that afternoon. All at once I realized where I had seen her. She was the young girl in the photograph, although she was now much older. She was very surprised, of course, when I was able to describe he
14、r wallet to her. Then I explained that I had recognized her from the photograph I had found in the wallet. My uncle insisted on going to the police station immediately to claim the wallet. As the police sergeant handed it over, he said that it was amazing that I had not only found the wallet, but al
15、so the person who had lost it.The wallet which the writer found_.Awas emptyBhad some money in itChad a few coins and a photograph in itDhad an old photograph in it 8.Violin prodigies (神童) , I learned, have come in distinct waves from distinct regions. Most of the great performers in the late 19th an
16、d early 20th centuries were born and brought up in Russia and Eastern Europe. I asked Isaac Stern, one of the worlds greatest violinists the reason for this phenomenon. It is very clear, he told me. They were all Jews (犹太人) and Jews at the time were severely oppressed and ill treated in that part of
17、 the world. They were not allowed into the professional fields, but they were allowed to achieve excellence on a concert stage. As a result, every Jewish parents dream was to have a child in the music school because it was a passport to the West. Another element in the emergence of prodigies, I foun
18、d, is a society that values excellence in a certain field to nurture (培育) talent. Nowadays, the most nurturing societies seem to be in the Far East. In Japan, a most competitive society, with stronger discipline than ours, says Isaac Stem, children are ready to test their limits every day in many fi
19、elds, including music. When Western music came to Japan after World War, that music not only became part of their daily lives, but it became a discipline as well. The Koreans and Chinese as we know, are just as highly motivated as the Japanese. Thats a good thing, because even prodigies must work ha
20、rd. Next to hard work, biological inheritance plays an important role in the making of a prodigy. J. S. Bach, for example, was the top of several generations of musicians, and four of his sons had significant careers in music.Jewish parents in Eastern Europe longed for their children to attend music
21、 school because _.Ait would allow them access to a better life in the WestBJewish children are born with excellent musical talentCthey wanted their children to enter into the professional fieldDit would enable the family to get better treatment in their own country 9.Why are mobiles so popular Becau
22、se people love to talk to each other. And it is easier with a mobile phone. In countries like Russia and China, people use mobile phones in places where there is no ordinary telephone. Business people use mobiles when theyre traveling. In some countries, like Japan, many people use their mobile phon
23、es to send e-mail messages and access the Internet. They use a new kind of mobile phone called i-mode. You can even use a mobile phone to listen to music. Mobile phones are very fashionable with teenagers. Parents buy mobile phones for their children. They can call home if they are in trouble and ne
24、ed help. So they feel safer. But teenagers mostly use them to keep in touch with their friends or play simple computer games. Its cool to be the owner of a small expensive mobile. Research shows that teenage owners of mobile phones smoke less. Parents and schools are happy that teenagers are safer a
25、nd smoke less. But many people dislike them. They hate it when the businessman opposite them on the train has a loud conversation on his phone, or when mobile phones ring in a cafe or restaurant. But there is a much more serious problem. Its possible that mobiles can heat up the brain because we hol
26、d the phone so close to our head. Scientists fear that mobiles can perhaps be bad for your memory and even give you cancer.Mobiles are popular among people because_.Athey think mobiles are funBthey believe mobiles are safeCthey love to listen to musicDthey feel it easier to talk to each other 10.Amt
27、rak (美国铁路客运公司) was experiencing a downswing in riders hip (客运量) along the lines comprising its rail system. Of major concern to Amtrak and its advertising agency DDB Needham, were the long-distance western routes where ridership had been declining significantly. At one time, trains were the only pra
28、ctical way to cross the vast areas of the west. Trains were fast, very luxurious, and quite convenient compared to other forms of transportation existing at the time. However, times change and the automobile became Americas standard of convenience. Also, air travel had easily established itself as t
29、he fastest method of traveling great distances. Therefore, the task for DDB Needham was to encourage consumers to consider other aspects of train travel in order to change their attitudes and increase the likelihood that trains would be considered for travel in the west. Two portions of the total ma
30、rket were targeted: 1) anxious fliersthose concerned with safety, relaxation, and cleanliness and 2) travel-loversthose viewing themselves as relaxed, casual, and interested in the travel experience as part of their vacation. The agency then developed a campaign that focused on travel experiences su
31、ch as freedom, escape, relaxation, and enjoyment of the great western outdoors. It stressed experiences gained by using the trains and portrayed western train trips as wonderful adventures. Advertisements showed pictures of the beautiful scenery that could be enjoyed along some of the more famous we
32、stern routes and emphasized the romantic names of some of these trains(Empire Builder, etc.).These ads were strategically placed among family-oriented TV shows and programs involving nature and America in order to most effectively reach target audiences. Results were impressive. The Empire Builder,
33、which was focused on in one ad, enjoyed a 15 percent increase in profits on its Chicago to Seattle route.It can be inferred from the passage that the drop in Amtrak ridership was due to the fact that _.Atrains were not suitable for short distance passenger transportationBtrains were not the fastest
34、and most convenient form of transportationCtrains were not as fast and convenient as they used to beDtrains could not compete with planes in terms of luxury and convenience 11.When I was walking down the street the other day, I happened to notice a small brown leather wallet lying on the sidewalk. I
35、 picked it up and opened it to see if I could find out the owners name. There was nothing inside it except some change and an old photographa picture of a woman and a young girl about twelve years old, who looked like the womans daughter. I put the photograph back and took the wallet to the police s
36、tation, where I handed it to the desk sergeant. Before I left, the sergeant took down my name and address in case the owner might want to write and thank me. That evening I went to have dinner with my aunt and uncle. They had also invited a young woman so that there would be four people at the table
37、. Her face was familiar. I was quite sure that we had not met before, but I couldnt remember where I had seen her. In the course of conversation, however, the young woman happened to mention that she had lost her wallet that afternoon. All at once I realized where I had seen her. She was the young g
38、irl in the photograph, although she was now much older. She was very surprised, of course, when I was able to describe her wallet to her. Then I explained that I had recognized her from the photograph I had found in the wallet. My uncle insisted on going to the police station immediately to claim th
39、e wallet. As the police sergeant handed it over, he said that it was amazing that I had not only found the wallet, but also the person who had lost it.The writer opened the wallet because he wanted to _in it.Afind some moneyBfind some goldCfind the owners nameDfind the owners photograph 12.Caller: H
40、ello. Im calling about the package tour to Singapore. Woman: _AIm afraid you have the wrong number.BIm sorry, but Ive got nothing to let.CYes, speaking.DIm afraid he is not available right now. 13.Violin prodigies (神童) , I learned, have come in distinct waves from distinct regions. Most of the great
41、 performers in the late 19th and early 20th centuries were born and brought up in Russia and Eastern Europe. I asked Isaac Stern, one of the worlds greatest violinists the reason for this phenomenon. It is very clear, he told me. They were all Jews (犹太人) and Jews at the time were severely oppressed
42、and ill treated in that part of the world. They were not allowed into the professional fields, but they were allowed to achieve excellence on a concert stage. As a result, every Jewish parents dream was to have a child in the music school because it was a passport to the West. Another element in the
43、 emergence of prodigies, I found, is a society that values excellence in a certain field to nurture (培育) talent. Nowadays, the most nurturing societies seem to be in the Far East. In Japan, a most competitive society, with stronger discipline than ours, says Isaac Stem, children are ready to test th
44、eir limits every day in many fields, including music. When Western music came to Japan after World War, that music not only became part of their daily lives, but it became a discipline as well. The Koreans and Chinese as we know, are just as highly motivated as the Japanese. Thats a good thing, beca
45、use even prodigies must work hard. Next to hard work, biological inheritance plays an important role in the making of a prodigy. J. S. Bach, for example, was the top of several generations of musicians, and four of his sons had significant careers in music.Nurturing societies as mentioned in the pas
46、sage refer to societies that _.Aenforce strong discipline on students who want to achieve excellenceBtreasure talent and provide opportunities for its full developmentCencourage people to compete with each otherDpromise talented children high positions 14.Amtrak (美国铁路客运公司) was experiencing a downswi
47、ng in riders hip (客运量) along the lines comprising its rail system. Of major concern to Amtrak and its advertising agency DDB Needham, were the long-distance western routes where ridership had been declining significantly. At one time, trains were the only practical way to cross the vast areas of the
48、 west. Trains were fast, very luxurious, and quite convenient compared to other forms of transportation existing at the time. However, times change and the automobile became Americas standard of convenience. Also, air travel had easily established itself as the fastest method of traveling great distances. Therefore, the task for DDB Needham was to encourage consumers to consider other aspects of train travel in orde