It is a terrible illustration of man &39; s weakness to nature ,and the tsunami(海 啸) that struck the Japanese coast in March, 2011 has illustrated the difficulty of fighting against natural disasters, even for a prosperous nation.

Totally preventing tsunami-damage is impossible. But there is much that can be done to minimize damage and loss of life. Measures that can be taken include designing solid buildings, and developing early-waming systems, public education programs and evacuation(疏散) strategies. Moreover, the approach of a tsunami is possibly picked up by the sensors of complicated international waming systems. Countries can use radio and television broadcasts as well as loudspeaker networks to warn the public.

But an early waming system depends on how far the tsunami strikes, if it&39; s close by, the warning system is not going to be very effective. When people are faced with an unstoppable force like a tsunami the massive waves created by events like underwater earthquakes, the best course of action for them is to get inland and to the higher ground as quickly as possible.

51. The first paragraph tells us that________

A.man can easily defeat the nature

B.tsunamis take place only in Japan

C.man’ s ability to cope with natural disasters is limited

D.the tsunami-damage in Japan is not so terrible

To prevent tsunami-damage, the following measures can be taken EXCEPT________

A.designing firm buildings

B.developing early-warning systems

C.developing evacuation strategies

D.keeping the public unaware of the seriousness of tsunamis

When a tsunami happens, the best course of action for people is to________

A.listen to radio and television broadcasts for information

B.get inland and to the higer ground as quickly as possible

C.stay where they are

D.rely on the warning systems

According to the passage , which of the folloiwing can cause a tsunami ?

A.Storms

B.Massive waves

C.Underwater earthquakes

D.Floods

Which of the following statements is correct according to che passage?

A.The total prevention of tsunamis is possible

B.Rich countries are less affected by tsunamis than poor countries

C.Approaching tsunamis can possibly be picked up by sensors

D.An early warning system is effective when a tsunami is close by

请帮忙给出每个问题的正确答案和分析，谢谢！

根据材料，回答下列各题。

随着顾客需求的不断提高和竞争的加剧，某公司总经理认识到通过质量改进不断提升产品质量的必要性。为此，总经理专门召集中高层经理就如何开展质量改进活动展开讨论，并在质量改进的组织形式、团队的建立、实施的流程以及采用的方法等方面统一了认识。

关于如何推进质量改进活动的说法，正确的是（ ）。

A.推进质量改进活动是质量管理部门的事

B.只需要建立多个质量改进团队来完成这项工作

C.由基层QC小组来承担公司的质量改进活动

D.建立管理层和实施层两个层次来系统推进质量改进活动

质量改进团队的常见形式有（ ）。

A.QC小组

B.质量改进委员会

C.领导小组

D.六西格玛小组

关于质量改进常用工具的说法，正确的有（ ）。

A.排列图是建立在帕累托原理的基础上

B.因果图是一种用于定性分析质量特性与可能影响因素的工具

C.排列图与因果图各有用途，不能结合使用

D.分层法的目的是使数据分层后，同一层内的数据波动幅度尽可能大

为了确保质量改进活动卓有成效，质量改进的第一步应当是（ ）。

A.选择课题

B.组建团队

C.拟定对策

D.分析原因

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With the explosive popularity of mobile devices, we have witnessed a steady increase in demand for mobile date service. In addition mobile users also expect to connect to the Internet for communicate and access to services through the best suitable connection, anywhere and at anytime. Although the seamless roaming capability is well supported in conventional. Cellular communication networks, roaming and interworking technologies are still immature in heterogenous wireless networks. Seamless roaming over heterogenous wireless networks will be an ongoing and improved process, due to the requirements from both end users and network administrators. From the wireless access networks belonging to different administrative domains, mobile users cannot always identify at every instance which network is the best one to access for their service. It is highly demanded to establish a network architecture which can facilitate mobile terminals to access the appropriate network in a cost-effective way. If a mobile user wants to move from one network to another with continuous service, the terminals have to cope with network change to maintain service seamlessly. Quality of service is a major issue that the end users should be provided with the satisfying service, while the network workload and cost should not too much increased. In addition, since end users are provided with numerous service ranging from Voice-over-IP to Video-on-Demand services, it is expected that users can experience the same quality for all the different service. Therefore, the network architecture need to be designed in such a way that the quality mechanism is incorporated so that users are served according to their individual QoS requirements. Based on the paragraph above, at present, seamless roaming over heterogenous wireless network is () in conventional cellular communication networks, Because of (), mobile users cannot always identify at every instance which network is the best one to access for their services. To satisfy the users QoS requirements, the network architecture design should include ()

A.better than

B.maturer than

C.as good as

D.not as good as

49.

A.the different network administrative domains

B.the same network administrative domains and mobile users

C.mobile users

D.the same network administrative domains

50.

A.Voice -over -IP

B.the quality mechanism

C.workload

D.Video-on-Demand

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若采用白盒测试法对下面流程图所示算法进行测试，且要满足语句覆盖，则至少需要（）个测试用例。

A.1

B.2

C.3

D.4

若表示输入和输出的测试用例格式为（A，B，X；X），则满足语句覆盖的测试用例是（）。

A.(1,3,3;8)

B.(1,3,5;10)

C.(5,2,15;8)

D.(5,2,20;9)

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The number of home users and small businesses that want to use the Internet is ever increasing. The shortage of addresses is becoming a serious problem.A quick solution to this problem is called network address translation(NAT).NAT enables a user to have a large set of addresses（ ）and one address, or a smallset of addresses,externally. The traffic inside can use the large set; the traffic（ ）, the small set. To separate the addresses used inside the home or business and the ones used for the Internet, the Internet authorities have reserved three sets of addresses as（ ）addresses. Any organization can use an address out of this set without permission from the Internet authorities. Everyone knows that these reserved addresses are for private networks.They are（ ）inside the organization, but they are not unique globally. No router will（ ）a packet that has one of these addresses as the destination address.The site must have only one single connection to the global Internet through a router that runs the NAT software.

A.absolutely

B.completely

C.internally

D.externally

A.local

B.outside

C.middle

D.around

A.private

B.common

C.public

D.external

A.unique

B.observable

C.particular

D.ordinary

A.reject

B.receive

C.deny

D.forward

请帮忙给出每个问题的正确答案和分析，谢谢！

Trust is typically interpreted as a subjective belief in the reliability,honesty and security of an entity on which we depend( )our welfare.In online environments we depend on a wide spectrun of things,ranging from computer hardware,software and data to people and organizations.

A security solution always assumes certain entities function according to specific policies.To trust is precisely to make this sort of assumptions , hence,a trusted entity is the same as an entity that is assumed to function according to policy.A consequence of this is that a trust component of a system must work correctly in order for the security of that system to hold, meaning that when a trusted( )fails,then the sytems and applications that depend on it can( )be considered secure .

An often cited articulation of this principle is："a trusted system or component is one that can break your security policy”(which happens when the trust system fails).The same applies to a trusted party such as a service provider (SP for short )that is , it must operate according to the agreed or assumed policy in order to ensure the expected level of securty and quality of services. A paradoxical conclusion to be drawn from this analysis is that security assurance may decrease when increasing the number of trusted components and parties that a service infrastructure depends on. This is because the security of an infrastructure consisting of many

Trusted components typically follows the principle of the weakest link,that is,in many situations the the overall security can only be as strong as the least reliable or least secure of

all the trusted components.We cannot avoid using trusted security components,but the fewer the better.This is important to understand when designing the identity management architectures,that is,fewer the trusted parties in an identity management model,stronger the security that can be achieved by it.

The transfer of the social constructs of identity and trust into digital and computational concepts helps in designing and implementing large scale online markets and communities,and also plays an important role in the converging mobile and Internet environments.Identity management (denoted Idm hereafter) is about recognizing and verifying the correctness of identitied in online environment.Trust management becomes a component of( )whenever different parties rely on each other for identity provision and authentication.IdM and Trust management therefore depend on each other in complex ways because the correctness of the identity itself must be trusted for the quality and reliability of the corresponding entity to be trusted.IdM is also an essential concept when defining authorisation policies in personalised services.

Establishing trust always has a cost , so that having complex trust requirement typically leads to high overhead in establishing the required trust.To reduce costs there will be incentives for stakeholders to “cut corners”regarding trust requirements,which could lead to inadequate security.The challenge is to design IdM systems with relatively simple trust requirements.Cryptographic mechanisms are often a core component of IdM solutions,for example,for entity and data authentication.With cryptography,it is often possible to propagate trust from where it initially exists to where it is needed .The establishment of initial( )usually takes place in the physical world,and the subsequent propagation of trust happens online,often in an automated manner.

A.with

B.on

C.of

D.for

72

A.entity

B.person

C.component

D.thing

73

A.No longer

B.never

C.always

D.often

74

A.SP

B.IdM

C.Internet

D.entity

75

A.rust

B.cost

C.IdM

D.solution

请帮忙给出每个问题的正确答案和分析，谢谢！

男患，42岁，因"发作性四肢抽搐4年，智能下降，行为异常2年"入院。患者两个舅舅均在年轻时发现精神异常，诊为"精神病"，均于40岁左右去世，死因不详。查体：神志清醒，语言刻板、重复，记忆力、定向力、计算力、理解判断力均下降。MMSE:4分。ADL:58分。表情淡漠、呆板。行为异常，余神经系统查体未见明显异常。为明确诊断，最终需要哪种检查

A、脑电图

B、头颅MRI

C、实验室检查

D、脑活检

E、腰穿

若头颅MRI显示双侧额颞叶萎缩，脑活检病理可见泛素染色阳性神经元，则诊断为

A、Alzheimer病

B、Pick病

C、额颞叶痴呆

D、Lewy体痴呆

E、进行性核上性麻痹

若此患者无抽搐，而表现为全身不自主运动，则可能的诊断为

A、Alzheimer病

B、Pick病

C、额颞叶痴呆

D、Lewy体痴呆

E、亨廷顿病痴呆

患者，男性，上腹隐痛1个月余，向腰背部放射，并进行性黄疸，CT平扫发现胰头体积增大，形态失常，并可见低密度肿块影，肝内外胆管扩张，胆囊体积增大。根据以上病史，最有可能的诊断是

A、慢性胰腺炎

B、胰腺癌

C、胰岛细胞瘤

D、胰腺囊腺瘤

E、以上都不是

如果考虑为胰腺癌，则以下哪种影像学表现最不可能出现

A、上消化道造影见十二指肠降部反"3"字征

B、胰管扩张

C、增强扫描早期病变可见明显均匀强化

D、增强扫描早期病变强化程度低于正常胰腺

E、周围血管被病灶包绕

男，25岁，双上肢热液烫伤，浅Ⅱ度，急诊入院。创面的最佳处理方法是

A、暴露疗法

B、包扎疗法

C、创面切除

D、刃厚植皮

E、以上都是

其烧伤面积为

A、9％

B、18％

C、15％

D、20％

E、10％

男性，57岁，发现高血压5年，近1月l出现喘憋、夜间憋醒、下肢水肿，满肺可闻1湿啰音。心电图提示陈旧前壁心肌梗死，胸片心影增大。最可能的诊断是

A、高血压收缩性心力衰竭

B、高血压舒张性心力衰竭

C、冠心病左心衰竭

D、冠心病右心衰竭

E、冠心病全心衰竭

缓解症状最迅速的药物是

A、血管紧张素转换酶抑制剂

B、β受体阻滞剂

C、钙拮抗剂

D、利尿剂

E、阿司匹林

最迫切的化验是

A、血常规

B、肾功能

C、肝功能

D、脑钠肽

E、血电解质

最迫切的辅助检查是

A、胸部CT

B、肝肾B超

C、超声心动图

D、心脏核素检查

E、冠脉造影

目前不宜使用哪类药物

A、血管紧张素转换酶抑制剂

B、β受体阻滞剂

C、洋地黄

D、利尿剂

E、螺内酯（安体舒通）