阅读材料，回答下列问题。

材料一：

材料二：《中 * * 关于制定国民经济和社会发展第十二个五年规划的建议》强调，深入贯彻科学发展观，顺应各族人民过上更美好生活的期待，使发展的成果惠及全体中国人民。

（1）请概括材料一反映的经济信息。

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（2）结合材料二，运用《经济生活》知识说明我国应如何实现民富。

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IP multicasting is a set of technologies that enable efficient delivery of data to many locations on a network. Rather than making multiple copies of a message intended to be distributed to multiple recipients at the (71) of origin of a message, multicasting initially sends just one (72) and does not copy it to the individual recipients until it reaches the closest common point on the network, thereby (73) the bandwidth consumed. Network performance is significantly (74) because it isn’t bogged down with the processing and transmission of several large data fries; each receiving computer doesn’t have to (75) the transmitting server for the file.

A. entity B. procession C. volumeD. message