Microsoft has released its free computer security package to the public. From 29 September, Windows users will be able to download the software from Microsoft's Security Essentials website. The free software gives basic protection against viruses, trojans, rootkits, and spyware. The Essentials software is Microsoft's second try at making an own-brand security package. Prior to release a beta version of Security Essentials software, code named Morro, has been available to users in the US, China, Brazil, and Israel. Microsoft said the software would be available to anyone who wanted to use it and downloading it would not involve registering with the software firm or having a limit on the amount of time it could be used for. "Consumers have told us that they want the protection of real-time security software, but that they are confused by trials and renewals and concerned about performance and as a result, too many are unprotected" said Amy Barzdukas, general manager for consumer security at Microsoft in a statement. The only restriction on use is that it has to be installed on a" genuine" Windows PC—One whose copy of its operating system has been verified by Microsoft. In the free software market Microsoft faces competition from many others including AVG. Alwil Avast, Avira Antivir and Comodo. The free software runs on Windows XP, Vista and will also be available for Windows 7 when it is released in late October. Updates will be provided automatically to those who install the software. Prior to working on Security Essentials, Microsoft offered its Windows Live One Care paid security software but this failed to win a significant user base in the highly competitive consumer market. This software was withdrawn in mid. 2009.
单选题
______ is NOT be protected against by the free security software.
【正确答案】
D
【答案解析】由题干关键词“protect against”定位到第二段第一句：The flee software gives basic protection against viruses, trojans, rootkits, and spyware. 在反病毒，水马，插件和窃取软件方面，免费的杀毒软件只能给与计算机最基本的保护。选项中A、B、C都在范围内，只有Pirated software(盗版软件)未被提及，因此应选择D。
单选题
Where has the software been available prior to release a beta version?
【正确答案】
B
【答案解析】定位到第三段第一句：Prior to release a beta version of Security Essentials software, codenamed Morro. has been available to users in the US, China, Brazil, and Israel在微软发布代号为Mofro的安全基础软件测试版之前，其在美洲、中国、巴西和以色列早已面世。选项中只有B项Israel与之棚符。
单选题
What is the restriction on using this Security Essentials software?
【正确答案】
B
【答案解析】由题干关键词“restriction”定位到第四段第二句：The only restriction on use is that it has to be installed on a "genuine" Windows PC-one whose copy of its operating system has been verified by Microsoft(唯一的限制就是该软件只能适用于安装了正版Windows的电脑，因其操作系统的拷贝已被微软验证)。由此，可以判断B选项为正确答案。
单选题
Which of the following system is NOT compatible with this free software?
【正确答案】
D
【答案解析】定位到第五段第一句：The flee software runs on Windows XP. Vista and will also he available for Windows 7 when it is released in late October该免费软件能应用于Windows XP、Vista，以及即将在十月下句面世的Windows 7。可见选项D Unix与该软件是不能兼容的，因此D为正确答案。
单选题
Which of the following is true about Microsoft new free security software?
【正确答案】
D
【答案解析】定位到第五段第二句：Updates will he provided automatically to those who install the software(软件更新会自动提供给用户)，D选项与此陈述相符，因为正确答案为D。A项认为在免费杀毒软件市场下，这款产品还没有竞争者，是不符合文意的，B项认为下载这款软件要在软件公司注册，是不合文意的。