【2016届北京朝阳区高三上学期期中】 根据短文内容，从短文后的七个选项中选出能填人空白处的最佳选项。选项中有两项为多余选项。

　　When it comes to the world of computers, green computing is becoming one of the most popular trends． The term "green computing" is one that is being used in many different markets and areas all over the world in today's global technology． _ 71

　　Green computing is basically learning to use computer resources more efficiently to help the environment as well as making energy savings．

　　72Green computing started as early as 1992, when the EPA created Energy Star, a program that promotes energy efficient computing equipment and technologies． It was because of this program that many computer companies launched sleep mode（模式） and millions of computer users around the world began to adopt this policy to help save energy when they were not using their computers． _73

　　_ It also began to become a goal that more companies try hard to meet over the years, There are several government agencies that have continued to work for better standards to promote green computing． 74 Because of these new requirements, there are over 20 states that have now established

　　a special recycling program for old computers and electronics to help with green computing．

　　Many of today's IT systems are beginning to rely

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