做4个交叉步需要几个八拍()?A、1个八拍  B、2个八拍  C、3个八拍

题型:单项选择题

问题:

做4个交叉步需要几个八拍()?

A、1个八拍 

B、2个八拍 

C、3个八拍

考点:体育科学健美操体操考试健美操体操考试题库
题型:单项选择题

最早提出“一切人生来就是平等的”这一观点的文献是

A.英国《权利法案》

B.美国《独立宣言》

C.法国《 * * 宣言》

D.《 * * 党宣言》

题型:单项选择题

下列事件:(1)调查长江现有鱼的数量;(2)调查你班每位同学穿鞋的尺码;(3)了解一批电视机的使用寿命;(4)校正某本书上的印刷错误.最适合做全面调查的是(     ).

A.(1)(3)

B.(1)(4)

C.(2)(3)

D.(2)(4)

题型:单项选择题

某产妇足月顺产后第4天,母乳喂养, * * 胀痛,无红肿,乳汁排流不畅,体温38.2℃。处理方法()

A.吸奶器吸吮

B.生麦芽煎服

C.抗生素治疗

D.让新生儿多吸吮双乳

E.少喝水

题型:单项选择题

妇女一生各阶段的生理特点,下列哪项正确

A.幼童期小儿体格及内外生殖器同时发育
B.第二性征的出现,标志着青春期开始
C.月经初潮标志卵巢功能成熟,为性成熟的开始
D.更年期一般历时2年
E.卵巢激素减少至不能引起子宫内膜脱落出血,最后一次经血过后1年以上称为绝经

题型:单项选择题

“This is a really exciting time — a new era is starting,” says Peter Bazalgette, the chief creative officer of Endemol. He is referring to the upsurge of interest in mobile television, a nascent industry at the intersection of telecoms and media which offers new opportunities to device-makers, content producers and mobile-network operators. And he is far from alone in his enthusiasm.

Already, many mobile operators offer a selection of television channels or individual shows, which are “streamed” across their third-generation (3G) networks. 41. ______.

Meanwhile, Apple Computer, which launched a video-capable version of its iPod portable music-player in October, is striking deals with television networks to expand the range of shows that can be purchased for viewing on the device, including “Lost”, “Desperate Housewives” and “Law & Order”.

42. ______. For a start, nobody really knows if consumers will pay for it, though surveys suggest they like the idea. Informa, a consultancy, says there will be 125m mobile-TV users by 2010. But many other mobile technologies inspired high hopes and then failed to live up to expectations. And even if people do want TV on the move, there is further uncertainty in two areas: technology and business models.

At the moment, mobile TV is mostly streamed over 3G networks. But sending an individual data stream to each viewer is inefficient and will be unsustainable in the long run if mobile TV takes off. 43. ______.

44. ______. That suggests that some shows (such as drama) better suit the download model, while others (such as live news, sports or reality shows) are better suited to real-time transmission. The two approaches will probably co-exist.

Just as there are several competing mobile-TV technologies, there are also many possible business models. Mobile operators might choose to build their own mobile-TV broadcast networks; or they could form a consortium and build a shared network; or existing broadcasters could build such networks.

The big question is whether the broadcasters and mobile operators can agree how to divide the spoils, assuming there are any. Broadcasters own the content, but mobile operators generally control the handsets, and they do not always see eye to eye. 45.

Then there is the question of who will fund the production of mobile-TV content: broadcasters, operators or advertisers Again, the answer is probably “all of the above”.

A.So the general consensus is that 3G streaming is a prelude to the construction of dedicated mobile-TV broadcast networks, which transmit digital TV signals on entirely different frequencies to those used for voice and data. There are three main standards: DVB-H, favoured in Europe; DMB, which has been adopted in South Korea and Japan; and MediaFLO, which is being rolled out in America. Watching TV using any of these technologies requires a TV-capable handset, of course.

B.In contrast, watching downloaded TV programmes on an iPod or other portable video player is already possible today. And unlike a programme streamed over 3G or broadcast via a dedicated mobile-TV network, shows stored on an iPod can be watched on. an underground train or in regions with patchy network coverage.

C.In South Korea, television is also sent to mobile phones via satellite and terrestrial broadcast networks, which is far more efficient than sending video across mobile networks. In Europe, the Italian arm of 3, a mobile operator, recently acquired Channel 7, a television channel, with a view to launching mobile-TV broadcasts in Italy in the second half of 2006.

D.Despite all this activity, however, the prospects for mobile TV are unclear.

E.Assuming the technology and the business models can be sorted out, there is still the tricky matter of content.

F.In South Korea, a consortium of broadcasters launched a free-to-air DMB network last month, but the country’s mobile operators were reluctant to provide their users with handsets able to receive the broadcasts, since they were unwilling to undermine the prospects for their own subscription-based mobile-TV services.

G.The potential for mobile TV is vast, in short — but so is the degree of uncertainty over how it should actually be put into practice.

45().

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