VOIP's leading proponent is Skype, a small firm whose software allows people to make free calls to other Skype users over the internet, and very cheap calls to traditional telephones—all of which spells trouble for incumbent telecoms operators. On September 12th, eBay, the leading online auction house, announced that it was buying Skype for $2.6 billion, plus an additional $1.5 billion if Skype hits certain performance targets in coming years.
This seems a vast sum to pay for a company that has only $60m in revenues and has yet to turn a profit. Yet eBay was not the only company interested in buying Skype. Microsoft, Yahoo!, News Corporation and Google were all said to have also considered the idea. Perhaps eBay, rather like some over-excited bidder in one of its own auctions, has paid too much. The company says it plans to use Skype's technology to make it easier for buyers and sellers to communicate, and to offer new "click to call" advertisements, but many analysts are sceptical that eBay is the best owner of Skype. Whatever the merits of the deal, however, the fuss over Skype in recent weeks has highlighted the significance of VOIP, and the enormous threat it poses to incumbent telecoms operators.
For the rise of Skype and other VOIP services means nothing less than the death of the traditional telephone business, established over a century ago. Skype is merely the most visible manifestation of a dramatic shift in the telecoms industry, as voice Galling becomes just another data service delivered via high-speed internet connections. Skype, which has over 54m users, has received the most attention, but other firms routing calls partially or entirely over the internet have also signed up millions of customers.
At the beginning of the text, the author ______.
A.states the popularity of the term
B.indicates a clever new technology
C.undermines an existing technology
D.corrects a misconception
第1题
A.由3个亚基组成
B.有7个跨膜α螺旋
C.有1个跨膜α螺旋
D.有丝(苏)氨酸蛋白激酶活性
第2题
A.DNA聚合酶Ⅰ
B.DNA聚合酶Ⅱ
C.DNA聚合酶Ⅲ
D.DNA聚合酶Ⅳ
第3题
A.角化珠形成
B.细胞内出现神经内分泌颗粒
C.腺体形成
D.乳头状排列
第4题
A.劳力型心绞痛
B.恶化劳力型心绞痛
C.变异型心绞痛
D.急性非ST段抬高心肌梗死
第5题
A.充足的热量供应
B.皮质激素和细胞毒药物治疗
C.优质蛋白、低蛋白、低磷饮食
D.控制血压
第7题
A.临床上常有心动过速发作
B.ECG上PR间期短于0.12秒
C.可发生心房颤动与心房扑动
D.西地兰可终止心动过速的发作
第8题
A.桡神经损伤
B.肱骨髁上陈旧性骨折
C.肱骨外上髁炎
D.肱骨慢性化脓性骨髓炎
第9题
A.急性胆囊炎
B.急性胰腺炎
C.急性胃炎
D.阑尾术后肠粘连
第10题
A.开放性气胸
B.闭合性气胸
C.胸廓软组织刺伤
D.心包填塞
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