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更多“Which is the most appropriate …”相关的问题
A.similar with
B.similar to
C.familiar with
D.familiar to
A.头
B.头脑
C.首脑
D.每人
A.Markets
B.Money
C.Profit seeking
D.The price mechanism
E.Scarcity
A.Most of all
B.Remember that
C.A key feature
D.For instance
A.CNN
B.Fox News
C.NBC
D.ABC
rring States Period.
A、Chong’er
B、Lao Zi
C、Qu Yuan
D、Jiezitui
你在一个有三个消费者组成的市场上销售产品1和产品2。三个消费者的保留价格如下:
各产品的单位成本为30美元。
(1)对分开销售两种产品、纯捆绑销售和混合捆绑销售，分别计算价格和利润。
(2)哪种策略是最有利可图的？为什么？
You are selling two gods, I and 2, to a market consisting of three consumers with reservation prices as follows :
The unit cost of each product is $ 20.
a. Compute the optimal prices and profits for (i) selling the goods separately, (ii) pure bundling, and (iii) mixed bundling.
b. Which strategy is most profitable？ Why？
Today we live in a world where GPS systems, digital maps, and other navigation apps are available on our smart phones. 1 of us just walk straight into the woods without a phone. But phones 2 on batteries, and batteries can die faster than we realize. 3 you get lost without a phone or a compass, and you 4 can’t find north, a few tricks to help you navigate 5 to civilization, one of which is to follow the land... When you find yourself well 6 a trail, but not in a completely 7 area, you have to answer two questions: Which 8 is downhill, in this particular area？ And where is the nearest water source？ Humans overwhelmingly live in valleys, and on supplies of fresh water. 9 , if you head downhill, and follow any H2O you find, you should 10 see signs of people. If you’ve explored the area before, keep an eye out for familiar sights—you may be 11 how quickly identifying a distinctive rock or tree can restore your bearings. Another 12 : Climb high and look for signs of human habitation. 13 , even in dense forest, you should be able to 14 gaps in the tree line due to roads, train tracks, and other paths people carve 15 the woods. Head toward these 16 to find a way out. At night, scan the horizon for 17 light sources, such as fires and streetlights, then walk toward the glow of light pollution. 18 , assuming you’re lost in an area humans tend to frequent, look for the 19 we leave on the landscape. Trail blazes, tire tracks, and other features can 20 you to civilization. 1.
A、Some
B、Most
C、Few
D、All
School buildings themselves can show liberal (开明的) or conservative views about what should go on in a classroom. The earliest schools had separate classrooms for different grades. The rooms were laid out formally, with pupils’desks fastened to the floor in straight rows facing the teacher’s desk. Clearly, such schools reflected a teacher-and-subject-centered view of education. Schools of the next generation had more open space, and most had movable desks. They also often provided special rooms or areas for science, art, music, and physical education. There were still separate rooms for different grade levels, however, and the desks still were likely to be formally arranged. That is, the schoolroom was still largely designed to carry out the old-school program, which involved grade levels, uniform. time blocks, and study of subject matters. Newer subjects, not newer teaching methods, accounted for most of what was new in school design. The first school buildings constructed to encourage liberal teaching methods appeared in the mid-1950s. Folding interior (内部的) walls permitted the flexible use of space to encourage large-group, small-group, or individual instruction. Some provided carrels for individual study, areas for team teaching, and centers for programmed instruction. In the newest buildings called open schools, the use of space is even more flexible. Areas within the buildings can be readily expanded for program changes, and used for many kinds of functions. One should remember, though, the physical layout (布局) of a school cannot decide whether it has the conservative or liberal teaching practices. What determines whether the classroom is liberal or conservative is the spirit and attitude of the teacher. The word “carrel” in Paragraph 3 most probably refers to ________.
A、a room with folding walls
B、a room with liberal instructions
C、a room with conservative instructions
D、a room with small space
We may think of the American economy, as consisting of two completely different sectors.The world of the giant corporations, which can be called the "industrial system", consists of 500 or 600 firms that provide "nearly all communications, nearly all production and distribution of electric power, much transportation, most manufacturing and mining, a substantial share of retail trade, and a considerable amount of entertainment." Outside of this industrial system fall most agricultural enterprises, some mining and trucking, professional and artistic pursuits, some retail trade, and most personal and domestic services.
The classical economic laws of supply and demand still apply to some degree.But today the industrial sector is characterized far more by planning and certainty than by the free play of market forces.It appears that it could scarcely be otherwise.In large corporations with advanced technological systems and complex organizations of highly trained specialists, plans for producing any one item are made well in advance.Such plans, once made, are hard to change.Because long-term planning demands certainty, market forces are avoided by various means.For example, the corporation may achieve "vertical integration" by buying companies that supply raw materials at one end of the process and distribution outlets at the other.Corporations may agree on "just prices" for things they buy and sell.They may enter mutually advantageous long-term contracts with suppliers and customers.Moreover, in their quest for certainty they generally have the support of the state.
26.The American giant corporations possess so many new characteristics that
A) highly educated managers are important for the corporations
B giant corporations become decentralized
C economic laws of the market are effective inside corporations
D heads of the giant corporations try to control the government
27.By the second paragraph, we know that .
A retail trade accounts for a big part in non-industrial system
B there are more giant corporations than agricultural enterprises
C giant corporations control every part of American economy
D giant corporations provide most of productions and services
28.From the whole passage, we can infer that American economy .
A is experiencing the rise of giant corporations
B is determined by hundreds of giant corporations
C has failed to balance supply and demand
D becomes highly-planned one
29.In the third sentence of last paragraph, the second "it" may refer to.
A classic economic law of supply and demand
B industrial sector
C American economy
D market force
30.Which of the following is not mentioned in the passage？
A American economy is characterized by high technology and giant corporations.
B American economy consists of industrial systems and agricultural enterprises.
C.Market economy is gradually replaced by planned economy.
D Highly trained specialists are needed.
We judge race usually __42__ the coloring of the skin: a white race, a brown race, a yellow race and a black race. But __43__ you were to remove the skin you could not __44__ anything about the race to which the individual belonged. There is __45__ in physical structure. The brain or the internal organs to __46__ a difference.
There are four types of blood. __47__ types are found in every race, and n o type is distinct to any race. Human brains are the __48__. No scientists could examine a brain and told you the race to which the individual belonged. Brains will __49__ in size, but this occurs within every race. __50__ does size have anything to do with intelligence. The largest brain __51__ examined belonged to a person of weak __52__. On the other hand, some of our most distinguished people have had __53__ brains.
Mental tests which are reasonably __54__ show no differences in intelligence between races. High and low test results both can be recorded by different members of any race. __55__ equal educational advantages, there will be no difference in average standings, either on account of race or geographical location.
Individuals of every race __56__ civilization to go backward or forward. Training and education can change the response of a group of people, __57__ enable them to behave in a __58__ way.
The behavior. and ideas of people change according to circumstances, but they can always go back or go on to something new __59__ is better and higher than anything __60__ the past.
41. a. complete b. full c. total d. whole
42. a. in b. from c. at d. on
43. a. since b. if c. as d. while
44. a. speak b. talk c. tell d. mention
45. a. something b. everything
c. nothing d. anything
46. a. display b. indicate c. demonstrate d. appear
47. a. All b. Most c. No d. Some
48. a. same b. identical c. similar d. alike
49. a. remain b. increase c. decrease d. vary
50. a. Only b. Or c. Nor d. So
51. a. ever b. then c. never d. once
52. a. health b. body c. mind d. thought
53. a. big b. small c. minor d. major
54. a. true b. exact c. certain d. accurate
55. a. Provided b. Concerning
c. Given d. Following
56. a. make b. cause c. move d. turn
57. a. and b. but c. though d. so
58. a. ordinary b. peculiar c. usual d. common
59. a. that b. what c. whichever d. whatever
60. a. for b. to c. within d. in
