小丽，15岁。发热、咽痛2周后出现关节痛。贫血貌，心尖部闻及舒张期隆隆样杂音。治疗3

已知点A在x轴上方，到x轴的距离是3，到y轴的距离是4，那么点A的坐标是______．

1860年，英法联军攻占北京，抢劫焚毁了有“万园之园”美誉的皇家园林是( )

A．颐和园
B．北海
C． * *
D．圆明园

（）使遗传提供的发展的可能性转变为现实。

A.环境

B.教育

C.社会

D.实践

Internet is a vast network of computers that connects many of the world’s businesses, institutions, and individuals. (46) The Internet, which means interconnected network of networks, links tens of thousands of smaller computer networks. These networks transmit huge amounts of information in the form of words, images, and sounds.
The Internet has information on every topic.(47)Network users can search through sources ranging from vast databases to small electronic" bulletin boards", where users form discussion groups around common interests. Much of the Internet’s traffic consists of messages sent from one computer user to another. These messages are called electronic mail or e-mail. Internet users have electronic addresses that allow them to send and receive e-mail. Other uses of the network include obtaining news, joining electronic debates, and playing electronic games.(48)One feature of the Internet, known as the World Wide Web, provides graphics, audio, and video to enhance the information in its documents. These documents cover a vast number of topics.
People usually access the Internet with a device called a modem. Modems connect computers to the network through telephone lines. Much of the Internet operates through worldwide telephone networks of fiber-optic cables(49) These cables contain hair-thin strands of glass that carry data as pulses of light. They can transmit thousands of times more data than local phone lines, most of which consist of copper wires.
In the future, the internet will probably grow more sophisticated as computer technology becomes more powerful. (50)Many experts believe the Internet may become part of a larger network called the information superhighway. This network, still under development, would link computers with telephone companies, cable television stations, and other communication systems. People could bank, shop, watch TV, and perform many other activities through the network.

依次填入下列各句横线处的词语，最恰当的一组是( )。
①在建设中国特色社会主义的伟大实践中涌现出来的先进______。他们是时代的先锋、国家的脊梁、群众的楷模，是弘扬传大民族精神的______。
②“六部委”联合开展环保专项 行动，要求建立各级政府负责的环保工作责任制，对工作不力的部门要通报批评，责令限期______。
③我不能说我不珍重这些荣誉，______我承认它很有价值，______我从来不曾为追求这些荣誉而工作。

A．典型/典范 整治/整顿 虽然/但是
B．典范/典型 整理/整改 虽然/不过
C．典型/典范 整治/整改 并且/不过
D．典范/典型 整理/整顿 并且/但是