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问题 选择题

During World War II Malta managed to _____ most of Italian and German bombers by throwing up an effective anti-aircraft screen.

A．put out

B．shut out

C．come across

D．get across

答案

答案：B

本题译文：第二次世界大战中，马耳他建立了有效的防空屏障以防止意大利和德国的轰炸机侵入。shut out(="prevent" from coming in; block)排除，排斥：They shut out our dust by having double windows.(他们用双层窗户防尘。) put out扑灭；get across越过；使人了解；come across偶然遇到。

单项选择题

实现餐饮经营目标的关键环节是（）

A、市场调研

B、产品生产

C、菜单筹划

D、服务销售
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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 (171) . Third parties can introduce risk in a variety of ways from connecting with an infected laptop to unauthorized access of network resources to (172) 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 (173) of service attacks or steal (174) information by snooping the network. As they access the corporate network, mobile and remote users inadvertently can infect the network with (175) 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.

（171）是（）

A.damageable

B.susceptible

C.vulnerable

D.changeable
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