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请阐述计算机用于数据管理经历的三个发展阶段，并说明每个阶段的主要特点。

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我们的鼻子有多少个嗅觉感受器？（）

A. 300万
B. 50万
C. 500万
D. 800万

Your computer runs Microsoft Windows Vista Home Basic edition. When you attempt to upgrade your computer to Microsoft Windows Vista Ultimate edition by booting from the DVD-ROM， you receive the following warning message： "The partition you selected might contain files from a previous Microsoft Windows installation. If it does， these files and folders will be moved to a folder named Microsoft Windows.old. You will be able to access the information in Microsoft Windows.old， but you will not be able to use your previous version of Microsoft Windows." You need to complete the upgrade. What should you do？（）

A. Boot into safe mode. Launch the setup.exe application from the Windows Vista Ultimate edition DVD-RO
Boot from the Windows Vista Ultimate edition DVD-ROM and click the command prompt option. Use the diskpart utility to create a new primary partition for the Windows Vista Ultimate edition installation.
C. Log on to the Windows Vista Home Basic edition installation. Launch the setup.exe application from the Windows Vista Ultimate edition DVD-ROM， and then click the Custom （Advanced） option.
D. Log on to the Windows Vista Home Basic edition installation. Launch the setup.exe application from the Windows Vista Ultimate edition DVD-ROM， and then click the Upgrade option.

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无论将教学设计看成结果还是过程，其根本任务都是为改进教学实践服务的。

A. 正确
B. 错误

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长沙出台了全国第一个政府发文的，有关环境规划的规范性文件，文件名称是？

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