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【单选题】

Right now, Internet phone calls are typically made on a computer, using a special headset or on a phone with a special adaptor. Increasingly, they can also be made over mobile phones, using Wi-Fi technology. ually, the companies say, they will be available on all devices, from televisions to iPods to appliances like refrigerators. The idea is that screens and voice technology will be everywhere, bringing your calls to you wherever you happen to be. And the old notion that a phone number is linked to a specific place is about to disappear. Already, someone in Mumbai can purchase a number with a Manhattan area code and carry it with him wherever he goes. Road warriors can get local, rather than long-distance, dialing rates by calls with their laptops. The Internet is free, and the technologies it is based on are open. That also makes it easier and cheaper for the new telephone companies to offer expanded features. Voice greetings could be customized to each caller, and a different ringtone could flag each member of the family. Bars and clubs could be equipped with a device at the door that finds your likely match in a computer database and automatically places a call to your potential sweetheart. Like a broadband connection, an Internet phone is always on. For s, that means mobile phones that allow endless chats with several friends at the same time, or an open hot line to Mom and Dad. "VoIP will mean the end of picking up a phone, talking and then hanging up," Says Paul Saffo, director of the Institute for the Future in Palo Alto, Calif. Which of these features comes to pass, though, is anybody’s guess.
Experts say VoIP will make the old idea of digital convergence a reality, blurring lines between telecoms, cable, computers and consumer electronics. The race among firms like Samsung, Sony and Apple to invent the next killer apps for consumers will grow more anarchic. And ysts are already speculating about the bizarre merger possibilities: Microsoft, Sony or Google buying a telephone company In a speech late last year, FCC chairman Michael Powell described the Internet phone call as a "revolution" with "profound implications" for the telecom industry, and called for a "new constitution for the regulation of such services, one befitting that revolution." Shortly after that speech, to the delight of Vonage and other upstarts, the FCC announced that VoIP would be regulated like the Internet (that is, lightly) rather than like the rules-heavy old phone system.
The purpose of the passage may well be summarized as _________.

A.
to illustrate the functional differences of real telephones and Internet telephones.
B.
to demonstrate the working of mobile phones.
C.
to show the impact of Internet phone calls on real life.
D.
to teach how to make an on-line phone call.
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【多选题】(四) 某车床有A、B、C三个加工组,三个加工组的产品都用直方图来表示产品分布情况。 (四) 在确定组界限的时候正确的是( )。

A.
第一组的下界限值小于数据中的最小值
B.
第一组的下界限值为最小值-组距/2
C.
第一组的下界限值为最小值+组距/2
D.
第一组下界限值加上上一组组距就是第一组的上界限值,也是下一组的下界

【单选题】A few common misconceptions: Beauty is only skin-deep. One’s physical assets and liabilities don’t count all that much in a managerial career. A woman should always try to look her best. Over the last...

A.
Almost invariably, the better looking the person in the picture, the higher the person is rated. In the phrase, borrowed from Sappho, that the social scientists use to sum up the common perception, what is beautiful is good. In business, however, good looks cut both ways for women, and deeper than for men. A Utah State University professor, who is an authority on the impact of physical attractiveness on males is only modest. But its potential impact on females can be tremendous, making it easier, for example, for the more attractive to get jobs where they are in the public eye. On another note, though, there is enough literature now for us to conclude that attractive women who aspire to managerial position do not get on as well as women who may be less attractive.

【单选题】While radio broadcasting was still (31) its early stage the wonder of television was (32) being developed. The first step towards its invention was (33) in 1873 but the person responsible for develo...

A.
As a home entertainment, (36) rapidly became more popular than any (37) form. A news broadcast became more immediate (38) people could actually see the scene (39) question and the movements of the figures. Films could also be available. One of the advantages of travel programmes was the (40) of far-away places which many viewers (41) not otherwise have seen. (42) much of the entertainment was of a popular (43) like quiz competitions, some remarkable cultural programmes were also broadcast. Just as (44) radio in earlier days, a group of actors and actresses became familiar in (45) household. (46) of the most popular programmes on television was sport and an interesting (47) of the television broadcast was the increased (48) at the actual events. How far this was due to a growth in interest (49) the game and how far out of the people’s desire to appear on the (50) is not clear.