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请阅读Passage2。完成第小题。
Passage 2
The World Cup has become the most streamed live sporting event the US has ever seen, as Americans tuned in to this year's tournament on their smart phones, tablets and computers in record numbers.
A surge of US interest in football this year has also led to record television audiences for broadcasts on ESPN and Uni-vision, the Spanish-language network. The US team's loss on Tuesday to Belgium averaged a 9.6 overnight rating on ESPN, according to Nielsen, the highest for any World Cup match the network has broadcast.
But a 50 per cent surge in live streaming compared with the previous record, set during the 2012 London Olympics, shows that the sport's appeal has grown particularly among younger, more digital, fans. Young people are energetic and fond of sporting, The World Cup is a great tournament of football, so they must be attractive. On the other hand, now the electronic devices are developing rapidly, more people have smart phones, tablets and computers. Then to watch the World Cup becomes much easier.
US viewers have so far watched nearly 30m hours of streaming video on ESPN's WoAd Cup website and apps, the network said, beating the previous record of 20.4m viewing hours during NBC's 2012 Olympics coverage. Univision has streamed 1.Sm hours since the start of the tournament.
Last week's USA vs. Germany match drew a record 1.Tm streaming viewers to ESPN at its peak, with streaming on Univision peaking at 747,000. Tuesday's USA vs. Belgium match peaked at 1.5m streams on ESPN and 680,000 on Univision.
In comparison, live streaming of January's Super Bowl peaked at l.lm.
While the elimination of the US team leaves a question mark over US fans' interest in the rest of the tournament, Univision's audience for non-US games has been robust.
Univision said its broadcast on Sunday of the Mexico vs. Netherlands match was the most-watched programme, of any kind, in US Spanish-language T
文章第一段讲到,今年通过智能手机、平板电脑和电脑观看世界杯比赛的美国人数创下历史纪录.世界杯也成为美国有史以来在流媒体上实时播放量最大的体育赛事。由此可知,今年有相当多的美国人关注世界杯.也就是美国人对于足球的兴趣突然增加.A项符合题意。
《义务教育数学课程标准(2011年版)》强调,课程内容要反映社会的需要、数学的特点,要符合学生的认知规律。课程内容的组织要重视过程,处理好()的关系。
设α是某一方程组的解向量,k为某一常数,则kα也为该方程组的解向量。( )
案例:
在有理数运算的课堂教学片段中,某学生的板演如下:
针对该学生的解答,教师进行了如下教学:
师:请仔细检查你的演算过程,看是否正确无误?
生:好像正确吧。
请分析例题1、例题2中每一步运算的依据。(10分)
初中数学课程是一门国家课程,其主要内容包括课程目标、教学内容、教学过程和( )等
教师职业道德区别于其他职业道德的显著标志就是( )。
对高中数学的评价,下列说法错误的是( )。