You are the Cisco Network Designer. Which of these is least important when determining how many users a NAS can support?（）

How many usable IP addresses can you get from a conventional Class C address?

You are the Cisco Network Designer in Cisco.com. Which of these are important when determining how many users a NAS can support?（）

To make sure of getting the full advantage of a favorable current，you should reach an entrance or strait at what time in relation to the predicted time of the favorable current?（）

I’d like to know what time we can get the container         it is in the port.

II．完型填空（共20分）Getting to places can sometimes be difficult，especially(特别) when you are going to a place for the (11) time．In big cities，many people take buses，trains or subways to get from (12 ) to another． Bu-ses are a popular (13) af transportation．lf you are using a bus，you need to know(14 ) bus to take and where you can get on． You (15) need to be able to(能够)read the timetable right， so you can take the right bus and (16 ) your place on time． At last，you need to know (17) to get off and (18 ) the driver the name of the station．In the countryside，transportation can be much simple．In some places，people get to school or work (19) boat．Some children ride in long boats on the river to get to school．In (20) places，students walk to school．( )11．

How many First Class return tickets can you get if you win the first prize?____ return tickets.

Passage ThreeNo one knows exactly how many disabled (残废的) people there are in the world, but estimates suggest the figure is over 450 million. The number of disabled people in India alone is probably more than double the total population of Canada.In the United Kingdom, about one in ten people have some disability. Disability is not just something that happens to other people. As we get older, many of us will become less mobile (可动的), hard of hearing or have failing eyesight.Disablement can take many forms and occur at any time of life. Some people are born with disabilities. Many others become disabled as they get older. There are many progressive disabling diseases. The longer time goes on, the worse they become. Some people are disabled in accidents. Many others may have a period of disability in the form. of a mental illness. All are affected by people's attitude towards them.Disabled people face many physical barriers. Next time you go shopping or to work or visit friends, imagine how you would manage if you could not get up steps, or on to buses and trains. How would you cope if you could not see where you were going or could not hear the traffic? But there are other barriers: prejudice can be even harder to break down and ignorance inevitably represents by far the greatest barrier of all. It is almost impossible for the able-bodied to fully appreciate what the severely disabled go through, so it is important to draw attention to these barriers and show that it is the individual person and their ability, not their disability, which counts.41. The first paragraph points out that ______.

Jitter is an unwanted variation of one or more characteristics of a periodic signal in electronics and telecommunications and（）refers to call issues that cause variations in timing or time of arrival. 

Jitter is an unwanted variation of one or more characteristics of a periodic signal in electronics and telecommunications and（）refers to call issues that cause variations in timing or time of arrival.

How many expansion frames can be attached to an IBM TS3500 model L23 or L53 base frame? （）

Many times important issues can get sidetracked in a meeting,（）when everyone has a different opinion about the topic.