Many mobile operators already offer a selection of television channels or individual shows, which are sent (1)_____ across their

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问题     Many mobile operators already offer a selection of television channels or individual shows, which are sent (1)_____ across their third-generation (3G) networks. In South Korea, television is also sent to mobile phones via satellite and terrestrial broadcast networks, which is far more (2)_____ than sending video across mobile networks; similar broadcasts will begin in Japan in April. Similar mobile-TV networks will also be built in Finland and America, and are being (3)_____ in many other countries.
    Meanwhile, Apple Computer, which (4)_____ a video-capable version of its iPod portable music player in this October, is (5)_____ a bargain with television networks to expand the (6)_____ of shows that can be purchased (7)_____ viewing on the device. And mobile TV was one of the big (8)_____ at the world’s largest technology fair, the Consumer Electronic Show.
    (9)_____ all this activity, however, the (10)_____ for mobile TV are unclear. For a start, nobody (11)_____ knows if consumers will pay for it, though surveys suggest they like the idea. One (12)_____ agency of the field, says there will be 125m mobile-TV users by 2010, but many other mobile technologies inspired high hopes and then failed to (13)_____ up to expectations. And (14)_____ people do want TV on the move, there is (15)_____ uncertainty in three areas: technology, business models and the (16)_____ itself.
    The (17)_____ for mobile TV is vast, in short, but (18)_____ is the degree of uncertainty over how it should actually be put into practice. Most observers do not expect widespread (19)_____ of mobile TV, if it comes at all, until 2008 at the earliest, since building the required ecosystem of technology, partnerships and content will (20)_____ some time.


选项 A、examined
B、tested
C、verified
D、prove

答案B

解析 词汇辨析题。本段主要介绍3G网络这一新的传输方式,各国正在或将要测试或已建成这样的网络,而本题谓语动词为进行时的被动结构,空格所填动词应与该句主语networks构成动宾关系,因此选 tested,指3G网络在其他许多国家正处于测试阶段。examine意为"检查,细查",如:The doctor examined her carefully.医生给她做了仔细的检查;verify意为"证明,证实,通过提供证据或证词来证明…的真相";prove指"证明,通过提供论据或证据来确立真实性或有效性"。
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