题干

我国科学家经过多次实验,在国际上首次成功实现百公里量级的自由空间量子隐形传态和纠缠分发,为发射全球首颗“量子通讯卫星”奠定技术基础。量子信息因其传输高效和绝对安全等特点,被认为是下一代IT技术的支撑性研究,并成为全球物理学研究的前沿与焦点领域。中科院于2011年启动了空间科学战略性先导科技专项,力争在2015年左右发射全球首颗“量子通讯卫星”。这表明
①实践和认识具有辩证统一关系         
②意识活动具有目的性和计划性 
③物质世界是绝对运动与相对静止的统一 
④发挥主观能动性是科学研究的前提

A:①②

B:②③

C:②④

D:①④

上一题 下一题 0.0难度 选择题 更新时间:2018-11-08 10:04:53

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A

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根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

    All languages change over time, but some change at a faster rate than others. ____ The most important factors are the number of people who speak a language, where they live and whether they move around, the importance of the language for world trade and communication, and changes in technology.

    ____ However, today English is the most widely used language in the world. English is spoken by about 350 million people as a first language in countries such as Great Britain, the United States. In addition, about a billion more people speak English as a second language.

    English started to take over French as an international language during the period of British colonialism (殖民主义) when the English ruled many countries in Africa and Asia. ____ The colonial period came to an end at the same time that several other changes occurred. For example, the U.S. started to play a greater part in global affairs and the international economy. New means of communication technology such as television and the Internet spread English worldwide. ____ In addition, they could use the Internet for information, business, or e-mail communication, all in English. Just as the use of English spread, other languages changed English by contact or by new inventions and technology.

    In contrast, Icelandic is a language that has changed very slowly. Icelandic speakers today can understand poetry written in a slightly different dialect over 1,000 years ago! Why has Icelandic changed so slowly? The main reason is the isolated (孤立的) location of the island in the middle of the Atlantic Ocean. ____ Compared to England, Iceland had no history of colonialism. Iceland's small population has not played a major role in international trade or communication. Today, most Icelanders speak English in addition to their native language. With outside influences, Icelandic is changing more rapidly now.

A. People everywhere could watch the news or sports events in English.

B. These changes have a great influence on the development of society.

C. Isolation meant that for hundreds of years, Icelanders had little contact with speakers of other languages.

D. What are some of the factors that influence how quickly a language changes?

E. The language communication brings about the communication of technology.

F. In the past, other languages such as Latin or French were more important than English.

G. English was the primary means of communication in these colonies.