在宏观和微观之间建立联系是化学学科特有的思维方式.下列对宏观事实的微观解释错误的

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问题:

在宏观和微观之间建立联系是化学学科特有的思维方式.下列对宏观事实的微观解释错误的是

[ ]

事实解释
A.10mL酒精和10mL水混合后体积小于20mL混合后分子变小了
B.NaOH和Ca(OH)2化学性质相似电离时生成的阴离子都是OH-
C.稀有气体可作保护气原子核外电子达到相对稳定结构
D.水电解生成氢气和氧气分子在化学变化中可以再分
考点:分子的特点稀有气体的性质和用途分子的定义碱的性质
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人体初次感染结核菌后出现的是

A.原发性肺结核
B.浸润性肺结核
C.血行播散型肺结核
D.结核性胸膜炎
E.慢性纤维空洞型肺结核

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下列生活中的变化,属于化学变化的是(  )

A.石蜡熔化

B.粉笔折断

C.纸张燃烧

D.车胎爆炸

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癫痫样波包括下列几项,但除外其中的()。

A.棘波

B.尖波

C.棘慢综合波

D.慢波

E.多棘慢综合波

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New media has been growing fast and influencing people’s lives in ways few things have done before. In 2010, China’s new media industry witnessed explosive development. But with “new” comes uncertainties and challenges. The following are brief reviews on the development of China’s new media and outlooks on its future.

I. Micro-blogging (微博)   

Short and convenient, micro-blogs also experienced “a big bang” in China last year, with the number of micro-bloggers at China’s popular portal(门户网站) sina.com.cn almost doubling in less than six months. Afterwards, the other three major web portals, including sohu.com, qq.com and 163.com, each set up their own micro-blogging services. With more government officials and entities(实体) registering, China’s micro-blogging services are expected to play a more important role in connecting the public and the governments in 2011.

第一节                         Search Engines

Baidu’s position in the search engine market would face fierce challenges from sohu.com,

Microsoft’s Bing and goso.cn from the People’s Daily. Xinhua is also preparing to start its search engine together with China Mobile, a leading company in mobile networks. Goso and Xinhua both have the advantage of providing content, while Bing has a big edge in technology and funds. They are expected to pose threats(威胁) to Baidu in 2011.

第二节                         Internet of Things

IoT refers to a network of real-world objects linked by the Internet and interacting through on-line services. China set up its first IoT research center in Shanghai in March 2010.Within the same week, Premier Wen Jiabao stated in the annual government report that it would “accelerate the research and development, as well as application of the Internet of Things. ”

However, some experts say China’s IoT is still in an early stage, and it’ll take a long time for it to let the public enjoy its full functions. 

40. What is the text mainly about?

A. Some major media in China.

B. China’s new media and its future.

C. The development of China’s on-line services.

D. China’s early-stage IoT and its major functions.

小题1:How many web portals are mentioned in Paragraph 2?

A.Two.

B.Three.

C.Four.

D.Five.小题2: Which of the following will be Xinhua’ s partner to start a search engine? 

A.Baidu.

B.Sohu.com.

C.Goso.cn.

D.China Mobile.小题3: What does the underlined part “a big bang” in Paragraph 2 probably mean? 

A.a deafening sound

B.an explosive development

C.a terrible damage

D.a demanding challenge

题型:选择题

头围是反映孩子大脑发育的重要指标,满1岁时头围约为()

A、45~46

B、47~48

C、32~33

D、40~42

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