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问题 填空题

（文科）将一个半径为2的半圆面围成一个圆锥，所得圆锥的轴截面面积等于______．

答案

半圆的画出计算圆锥的底面周长：π，底面半径为1，轴截面是正三角形，所以轴截面面积：

3
4
22=
3
．

故答案为：

3
．

单项选择题

韩愈《春雪》诗云： “新年都未发新华，二月初惊见草芽。白雪却嫌春色晚，故穿庭树作飞花。”对这首诗的分析有误的一项是：

A．首句透露出盼春的急切心情。

B．第二句的“惊”字写出人们的欣喜。

C．第三、四句用拟人手法表现盼春的急切心情。

D．全诗以盼春、惊春、恨春为线索写成。
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单项选择题

To compete in today’s fast-paced competitive environment, organizations are increasingly allowing contractors, partners, visitors and guests to access their internal enterprise networks. These users may connect to the network through wired ports in conference rooms or offices, or via wireless access points. In allowing this open access for third parties, LANs become （1）. Third parties can introduce risk in a variety of ways from connecting with an infected laptop to unauthorized access of network resources to（2）activity. For many organizations, however, the operational complexity and costs to ensure safe third party network access have been prohibitive. Fifty-two percent of surveyed CISOs state that they currently use a moat and castle’s security approach, and admit that defenses inside the perimeter are weak. Threats from internal users are also increasingly a cause for security concerns. Employees with malicious intent can launch（4）of service attacks or steal （5） information by snooping the network. As they access the corporate network, mobile and remote users inadvertently can infect the network with （6）and worms acquired from unprotected public networks. Hackers masquerading as internal users can take advantage of weak internal security to gain access to confidential information.

4（）

A．reserved

B．confidential

C．complete

D．mysterious
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