问题 单项选择题

人生是______的,一个有着热烈的、慷慨的、天性多情的人,也许容易受他的比较聪明的同伴之愚。那些天性慷慨的人,常常因慷慨而错了主意,常常因对付仇敌过于宽大,或对于朋友过于______,而走了失着。 依次填入画横线部分最恰当的一项是( )。

A.惨烈 信赖

B.残酷 信赖

C.惨烈 信任

D.残酷 信任

答案

参考答案:D

解析: 惨烈:十分凄惨,极其壮烈;残酷:凶狠冷酷。前者多用来形容场景、景象,后者多用来形容手段、竞争等。信赖:信任并依靠;信任:相信而敢于托付。前者强调依赖,后者强调托付。用“惨烈”形容人生显然不合适,排除A、C两项。对于朋友当然是“信任”,而不是“依赖”。故本题正确答案为D。

填空题
单项选择题

A small group of Internet security specialists gathered in Singapore to start up a global system to make e-mail and e-commerce more secure, end the rapid growth of passwords and raise the bar significantly for Internet fraud, spies and troublemakers.

The Singapore event included an elaborate technical ceremony to create and then securely store numerical keys that will be kept in three hardened data centers there, in Zurich and in San Jose, Calif. The keys and data centers are working parts of a technology known as Secure DNS, or DNSSEC. DNS refers to the Domain Name System, which is a directory that connects names to numerical Internet addresses. Preliminary work on the security system had been going on for more than a year, but this was the first time the system went into operation, even though it is not quite complete.

The three centers are fortresses made up of five layers of physical, electronic and cryptographic security, making it virtually impossible to damage the system. Four layers are active now. The fifth, a physical barrier, is being built inside the data center.

The technology is viewed by many computer security specialists as a ray of hope amid the recent cascade of data thefts, attacks, disruptions and scandals, including break-ins at Citibank, Sony, Lockheed Martin, RSA Security and elsewhere. It allows users to communicate via the Internet with high confidence that the identity of the person or organization they are communicating with is not being tricked or forged.

Internet engineers like Dan Kaminsky, an independent network security researcher who is one of the engineers involved in the project, want to counteract three major deficiencies in today’s Internet. There is no mechanism for ensuring trust, the quality of software is uneven, and it is difficult to track down bad actors.

One reason for these flaws is that from the 1960s through the 1980s the engineers who designed the network’s underlying technology were concerned about reliable, rather than secure, communications. That is starting to change with the introduction of Secure DNS by governments and other organizations.

The event in Singapore capped a process that began more than a year ago and is expected to be complete after 300 so-called top-level domains have been digitally signed. Before the Singapore event, 70 countries had adopted the technology, and 14 more were added as part of the event. While large countries are generally doing the technical work to include their own domains in the system, the association of Internet security specialists is helping smaller countries and organizations with the process.

We can infer from the last paragraph that()

A. the Net security system will catch on soon

B. engineers prefer to wait and see how things go

C. actions are taken to utilize the security system

D. more countries are supposed to invest in the system