违反劳动纪律，有下列哪些行为之一的，给予警告或者记过处分；情节较重的，给予记大过或者

下列各式一定成立的有（    ）．

①a²=（﹣a）²；②a³=（﹣a）³；③|a²|=|a|² ；④a³=|a³|；⑤﹣a²=|﹣a²|．

按要求改写句子。

1. The children had a good time in the park yesterday. (改为同义句) 

    The children _____ _____ in the park yesterday.

2. Lucy reads English every day. (对画线部分提问) 

    _____ _____ _____ Lucy read English?

3. There's a woman in the picture. (改为复数形式)

    There _____ some _____ in the picture.

4. I have a sore throat. (同上)

    What's the _____ _____ you?

当血氧饱和度低于多少时，即可出现紫绀

A．50％
B．60％
C．70％
D．90％
E．85％

At a basic level， cloud computing is simply a means of delivering IT resources as （）.Almost all IT resources can be delivered as a cloud service: applications， compute power， storage capacity， networking，programming tools，even communication services and collaboration （）。

Cloud computing began as large-scale Internet service providers such as Google，Amazon，and others built out their infrastructure. An architecture emerged: massively scaled， （） distributed system resources，abstracted as virtual IT services and managed as continuously configured， pooled resources. In this architecture， the data is mostly resident on （）“somewhere on the Intemet”and the application runs on both the "cloud servers”and the user’s browser.

Both clouds and grids are built to scale horizontally very efficiently. Both are built to withstand failures of （） elements or nodes. Both are charged on a per-use basis. But while grids typically process batch jobs， with a defined start and end point， cloud services can be continuous. What’s more， clouds expand the types ofresources available —— file storage， databases， and Web services —— and extend the applicability to Web and enterprise applications.

An architecture emerged: massively scaled，（）distributed system resources，abstracted as virtual IT services and managed as continuously configured， pooled resources.

A．horizontally

B．vertically

C．inclined

D．decreasingly

党的十七大报告指出：科学发展观是发展中国特色社会主义必须坚持和贯彻的行动指南。