正式足球比赛开始时球的重量应不多于()克。 A.410 B.450 C.480 D.

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问题:

正式足球比赛开始时球的重量应不多于()克。

A.410

B.450

C.480

D.500

考点:足球知识文化竞赛足球知识文化竞赛题库
题型:单项选择题

角分为(    )角、(    )角、(    )角、(    )角和(    )角五种。

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用玻璃塞的试剂瓶盛放氢氧化钠溶液时,瓶口常会生成具有黏性的硅酸钠(Na2SiO3),该物质使瓶塞和瓶口黏结在一起.Na2SiO3中硅元素的化合价为 (  )

A.+4

B.+6

C.+2

D.+1

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Hikosaburo Yasuda of Nakano, Japan, plans to buy an iPad to keep up with junior members in his computer club."It's important to always try new things, otherwise you get left behind," he says.  

Yasuda is 95 years old.He and his colleagues, looking for easier ways to search the Web and send e-mail, represent a potential market for Apple (AAPL)'s iPad.The company has sold 3.27 million iPads since its launch in April, but doesn't break down sales figures by customer age, making it impossible to know with certainty how many seniors are buying them.However, anecdotal evidence suggests it's a hit with the elderly.

The iPad's intuitive interface (直观界面) makes it appealing to senior citizens around the world, says Takahiro Miura, a researcher at the University of Tokyo: "The iPad is a good tool for the elderly because it's very forgiving of mistakes." Miura's team uses computers to help train senior citizens to rejoin the workforce."Unlike the PC, it doesn't require previous knowledge," he says.

James Cordwell, a technology analyst at Atlantic-Equities in London, says the iPad's popularity with the elderly is helping Apple reach beyond its traditional base of younger customer. “The world’s population, especially in developed markets, is getting older, and it’s probably a market where Apple has least entered,” Cordwell says. Elderly users are “a key source of growth for them in the future.”

The elderly in Japan, who make up an estimated 22 percent of the population, may prove particularly receptive to the iPad. They spend more than any other group in the country except for those under 30, according to a report by Japan's Cabinet Office. Motoo Kitamura, 78, a former gas salesman, bought an iPad to help him communicate with his 2-year-old grandson and stave off dementia. "Trying new things like that is a good mental exercise," he says.

小题1:The underlined part “a hit” in Paragraph 2 may probably mean “     ”.

A.a hard strike

B.a heavy burden

C.quite popular

D.very familiar小题2:Which of the following is NOT an advantage of the iPad over the PC?

A.It has intuitive interface.

B.It is easier to operate.

C.It is more accessible to beginners.

D.It is a good mental exercise.小题3:What can we learn from the passage?

A.The people under thirty are the largest consumers in Japan except for the elderly.

B.The traditional customers of AAPL’s products are usually the yong.

C.The elderly will soon grow into the largest customer group in place of the young.

D.The elderly in Japan have great enthusiasm for latest hi – tech products.小题4:What could be the best title for the passage?

A.The iPad leads Apple to the elderly

B.Ipad hits Japan’s store shelves

C.Ipad’s arrival in Tokyo causes Uapanese to reflect

D.AAPL attempts to balance the old and the yong

题型:单项选择题

地层在正常情况下,沉积顺序是()。

A、老岩层在下,新岩层在上

B、老岩层在上,新岩层在下

C、老岩层和新岩层交替出现

D、没有规律

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某工厂有一大型储水罐供全厂生产用水,已知每天晚8点至早8点蓄水,蓄水管流量为8吨/小时,工厂用水为每天早8点至晚12点,用量为6吨/小时,储水罐中水位最高时的储水量至少是多少吨

A.48
B.72
C.84
D.96

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