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[单选题]

下面这组数据“23、29、20、32、23、21、33、25”的中位数是（)。

A.23

B.24

C.25

D.27

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更多“下面这组数据“23、29、20、32、23、21、33、25…”相关的问题

第1题

Dear Mr. Mills,In reply to your letter of April 20, I would【21】to inform（通知) you that th

Dear Mr. Mills,

In reply to your letter of April 20, I would【21】to inform(通知) you that there are a【22】of beautiful summer cottages(小别墅) for sale here in Ocean City.

For example, we have a modern two-storey house that is【23】up to date. It is two blocks from the sea and you may find this a disadvantage(不利), but,【24】all, the opening of the summer【25】is only a few weeks from now, and finding a house【26】to the ocean than that is【27】out of the question. The house I'm speaking of has two bedrooms and a porch(门廊) that can be【28】for sleeping. For this reason, I consider it as a very good buy. The plumbing(给水管道) is out of order at the【29】, but this will be repaired, of course. The price is reasonable; as a matter of fact, it is less than is being asked for comparable(同等的) houses elsewhere in town.

As a rule, I【30】 to deal with people face to face in matters of this kind.【31】, I will be out of town next week, and I don't think you should delay in【32】 your decision about this house, since it is sure to be sold quickly. Under the circumstances (环境),【33】, I suggest that you come to see it as【34】 as possible. You can deal with one of my assistants in the office. I am sure you will find the house is【35】 what you expect.

Sincerely yours,

Jason Riggs, Manager

Ocean City Real Estate Company

(46)

A．want

B．like

C．enjoy

D．choose

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第2题

一组数据排列如下：2.2.3.4.4.4.5.6.6.7，则这组数据的四分位差是（)。

A.2

B.3

C.4

D.5

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第3题

一组数据的平均数为5，方差为3，若将每个数据乘以2，形成一组新的数据，则这组新数据的____。

A.平均数为10，方差为6

B.平均数为10，方差为12

C.平均数为10，方差为3

D.平均数为5，方差为12

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第4题

下面示例中，属于Time数据类型的是（)。

A.T#1d_2h_15m_30s_45ms

B.D#2009-12-31

C.TIME_OF_DAY#10:20:30.400

D.23:10:1

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第5题

The Voice of America began during the World War II when Germany was broadcasting a radio p

rogram to get international (21) . American officials believed they should (22) the German broadcast with words that they thought were the facts of world (23) . The first VOA news report began with these words in (24) : "The (25) may be good or bad, but we shall tell you the truth." Within a week, other VOA (26) were broadcasting in Italian, French and English.

After the World war II (27) in 1945, some Americans felt VOA's (28) had to be changed, (29) the Soviet Union (苏联)became the enemy of America. They wanted to reach Soviet listeners. Then VOA began broadcasting in Russian.

In the early years VOA began (30) something new to its broadcast that was (31) "Music USA" , Another new idea came (32) in 1959. VOA knew that many listeners did not know (33) English to completely understand its normal English broadcast. So VOA (34) a simpler kind of English, which uses about 1,500 words and is spoken (35) ,of course, it is Special English.

21.

A. business

B. culture

C. support

D. information.

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第6题

数据网的网络设备一般应安装在专用机房或设备间，其环境温度要求应保持在（)。

A.10～18℃

B.12～29℃

C.15～28℃

D.20～30℃

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第7题

完成下列各题 Once a foreigner travelling in France came to Paris for a few days．21 the

very first day of his staying in the French capital he 22 a telegram to his wife 23 the name and address of the hotel 24 he was staying．Then he decided to go out and 25 the places of wonder in the capital．He took a long walk along the streets of the city，visiting a few muse ums and by the end of the 26 he felt tired． He wanted to 27 the hotel to take a rest there，but suddenly he 28 he remembered 29 the name nor the address of the hotel．He felt quite 30 and slowly walked along the street，not knowing what to do．Suddenly he found 31 in front of a post office．He quickly ran inside and said 32 an excited voice．“Give me a telegram form，plebe．”“Here you are，”a man answered，giving him a form．It did not 33 long to fill it in．A minute later he handed in the telegram and paid the mall． His wife was greatly 34 when an hour later she received 35 telegram from her husband：“Send me my address at once!”

A.At

B.In

C.On

D.For

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第8题

Let me tell you a story about Berb and Mild Carbridge, who used to be very【21】For example,

Mild would forget to【22】dinner, or Berb would【23】up for work on Sunday【24】it was Monday. One summer they【25】to take a long plane trip. What do you guess happened？ Well, they got to the airport with only ten minutes to【26】. So time was short. In that【27】anyone would【28】the plane right away. But not Mr. and Mrs. Carbridge. They just had to buy some flight insurance(保险)【29】. All in all, who knows what will happen on a plane flight？ They quickly put some【30】into a machine and【31】came their insurance policy. "Who【32】get the money if we【33】, I wonder？" asked Mild. "My mother, of course," her husband【34】. "We'll mail the【35】to her. Now quick give me a stamp,【36】you？" he said. "The plane's going to【37】in another minute." Berb put the stamp on the envelope,【38】it in the mailbox, and【39】began to cry. What happened, do you guess？ He had mailed their【40】to his mother!

(36)

A．careless

B．forgetful

C．thoughtful

D．foolish

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第9题

Ⅲ. Cloze （20 points) Directions: For each blank in the following passage, there are fo

Ⅲ. Cloze (20 points)

Directions: For each blank in the following passage, there are four choices marked A, B, C and D. Choose the one that is most suitable and mark your answer by blackening the corresponding letter on the answer sheet.

We are interested in the weather because it (21) us so directly—what we wear, (22) we do, and even how we feel. Geographers, however, are (23) interested in climate than in weather. Climate is the pattern of all the weather conditions over a long period of time. Generally (24) , climate (25) to these normal weather conditions, not (26) daily or yearly changes.

Climate, like weather, changes (27) time. It is true (28) these changes (29) a long time, but not as long as we might expect. Records show that over the centuries large portions of the earth have experienced great changes (30) climate.

21. A. effects

B. defects

C. infects

D. affects

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第10题

The invention of both labor-saving tools and tools of intelligence is rarely accidental. I

nstead, it is usually the product of human need; (21) is truly the mother of invention. People usually devise tools to (22) for natural deficiencies. For example, people invented weapons to defend (23) from physically superior (24) . But (25) is only one incentive for inventions. People also invent (26) tools to (27) certain established tasks more efficiently. For instance, people developed the bow and arrow from the (28) spear or javelin in order to shoot (29) and strike with greater strength.

(30) civilizations developed, greater work efficiency came to be demanded, and (31) tools became more (32) . A tool would (33) a function until it proved (34) in meeting human needs, at which point an improvement would be made. One impetus for invention has always been the (35) for speed and high-quality results--provided they are achieved (36) reasonable costs. Stone pebbles were sufficient to account for small quantities of possessions, (37) they were not efficient enough for performing sophisticated mathematics. However, beads arranged systematically evolved into the abacus. The (38) of this tool can be (39) to the development of commerce in the East around 3000 B.C., and the abacus is known (40) by the ancient Babylonians, Egyptians, Chinese, etc.

A．imagination

B．creativity

C．necessity

D．illusion

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