竣工验收合格的引水渠工程，初斯通水后两岸坡体出现了很长的纵向裂缝，并局部地面下沉，该

首字母填空。

     We are all busy talking about and using the Internet (互联网), but how many of us know the h __1__

  of the Internet?

 Many people are surprised when they find that the I __2__was set up in the 1960s. At that time,

 computers were large and e __3__. Computer networks (网络) didn't work well. If one computer in the

  network broke down, then the whole network stopped. So a new network system had to be set up. It should be good e __4__ to be used by many different computers. If part of the network was not working,

 information could be sent through a __5__ part. In this way computer network system would keep on

 w__6__ all the time.

At f __7__the Internet was only used by the government, but, in the early 1970s, universities,

 hospitals and banks were allowed to use it too. H __8__computers were still very expensive and the

 Internet was d __9__ to use. By the start of the 1990s, c__10__became cheaper and easier to use.

 Scientists had also developed software that made 'surfing' (浏览) the Internet more convenient.

     Today it is easy to get on-line (上网) and it is said that m __11__of people use the Internet everyday.

 Sending e-mail is more and more p __12__among students.

     The Internet has now become one of the most important parts of people's life.

若函数f（x）满足f（-x）=-f（x），并且当x＞0时，f（x）=2x²-x+1，则当x＜0时，f（x）=______．

读图，完成下列要求（9分）

（1）此时的太阳直射点的地理坐标是                   。

（2）此图上，全球以日界线和          度经线为界，分为两个日期。

（3）当天，地球赤道上的日出地方时刻是             ，北极圈上的日落地方时刻是             。

（4）当天，北京 * * 升旗的时间是        。此时北京时间是          。

（5）此时，正午太阳高度角分布规律是                             。

（6）此时，晨线和昏线的经度分别是            、             。

《建设工程安全生产管理条件》第14条第2款规定：工程监理单位在实施监理过程中，发现存在安全事故隐患的，应当要求施工单位整改；情况严重的，应当要求施工单位( )。

A．暂时停止施工，并及时报告建设单位
B．终止施工
C．与建设单位协商
D．与建设单位解除承包合同

TD-SCDMA频率规划要求同一个站不同小区要求不能用同一个频点做主频点，不考虑邻区频点使用情况。