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The number of home users and small businesses that want to use the Internet is ever increa

sing. 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

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更多“The number of home users and s…”相关的问题

第1题

根据短文回答 36～40 题。 Home Heating Central heating became popular only after the Ci

根据短文回答 36～40 题。

Home Heating

Central heating became popular only after the Civil War Typically, coat-burning furnaces (火炉) fueled the early systems Natural gas had developed into the leading fuel by 1960 its acceptance resulted in part from its wide uses Because it comes primarily from US and Canadian fields, natural gas is also less vulnerable (脆弱的) than oil is to war Oil remains the most important fuel in a few areas, such as New England

Electric heating dominates most areas with mild winters and cheap electricity, including the South and the Northwest It was made popular at least in the South by the low cost of adding electric heating to new houses built with air-conditioning Bottled gas, which is somewhat more expensive than utility gas, is the fuel of choice in rural areas not served by utility pipelines Wood is the leading heating fuel in just a few rural counties

Home heating which accounts for less than 7 percent of all energy consumed in the US, has had a commendable (值得赞扬的) efficiency record: from 1978 to 1997, the amount of fuel consumed for this purpose declined 44 percent despite a 33 percent increase in-the number of housing units and an increase in house size The U S

Department of Energy, however, forecasts that energy used in home heating will rise by 14 percent over the next two decades that rise is small considering an expected 21 percent increase in the number of houses and the trend toward larger houses

Natural gas and electricity will probably dominate the home heating market for the next two decades Solar (太阳的) heating never became popular because of cost and limited winter sunlight in most areas; in 2000 only 47,000 homes relied on it.

第 36 题 Natural gas didn't become the leading fuel until（）

A．1978

B．1960

C．1997

D．2000

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第2题

Falls are the number one cause of accidental deaths in the home every year. （翻译成

Falls are the number one cause of accidental deaths in the home every year. (翻译成中文)

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第3题

Number Ten Downing Street is the British prime minister's official________.

A.building

B.residence

C.home

D.area

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第4题

—Judging from number of the cars, there are not many people in the club.—I think so. People would rather stay at home in such bad weather（）

A.the; /

B.a; /

C.the; a

D.a; a

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第5题

An increasing number of overseas Chinese students have returned home in recent years, for they hold an optimistic ______ for the Chinese economy.

A.pendulum

B.establishment

C.outlook

D.contradiction

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第6题

Section A（30 points, 2 points each)Directions: This part is to test your reading ability.T

Section A (30 points, 2 points each)

Directions: This part is to test your reading ability.There are 3 tasks for you to fulfill. You should read the materials carefully and do the tasks as you are instructed.

There was once a young man who suffered from cancer. He was 18 years old and he could die anytime. He never went outside: but he was sick of staying home and wanted to go out for once. So he asked his mother and she gave him permission.

He walked down his block and found a lot of stores. He passed a CD store and saw a beautiful girl about his age and he knew it was love at first sight. He opened the door and walked in.

She looked up and asked, "Can I help you？"

He said. "Uh... Yeah... Umm... I would like to buy a CD."

He picked one out and gave her money for it.

"Would you like me to wrap it for you？" she asked, smiling her cute smile.

He nodded and she went to the back. She came back with the wrapped CD and gave it to him. He took it and walked out of the store.

He went home and from then on, he went to that store every day and bought a CD, and she wrapped it for him. He took the CD home and put it in his closet. He was still too shy to ask her out. His mother found out about this and told him to just ask her. So the next day, he took all his courage and went to the store as usual. He bought a CD like he did every day and once again she went to the back of the store and came back with it wrapped. He took it and when she wasn't looking, he left his phone number on the desk and ran out.

One day the phone rang, and the mother picked it up and said, "Hello？"

It was the girl!!! The mother started to cry and said, "You don't know？ He passed away yesterday..."

Later in the day, the mother went into the boy's room because she wanted to remember him. She thought she would start by looking at his clothes. So she opened the closet.

She was face to face with piles and piles of unopened CDs. She was surprised to find all these CDs and she picked one up and sat down on the bed and she started to open one. Inside, there was a CD and as she took it out of the wrapper, out fell a piece of paper. The mother picked it up and started to read it. It said: Hi... I think U R really cute. Do U wanna go out with me？ Love, Jocelyn.

The mother was deeply moved and opened another CD...

Again there was a piece of paper. It said: Hi... I think U R really cute. Do U wanna go out with me？ Love, Jocelyn.

Why did the boy go to the CD store everyday and buy a CD？

A．He loved the girl.

B．He loved music.

C．He loved collecting CDs.

D．He was sick of staying home and wanted to go out.

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第7题

What information must Ms. Montgomery give？A．Her home addressB．The billing addressC．Her ide

What information must Ms. Montgomery give？

A．Her home address

B．The billing address

C．Her identification number

D．Her daughter's phone number

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第8题

What is the student's home telephone number？A．9456 1309.B．9835 1309.C．9835 6712.D．9456 671

What is the student's home telephone number？

A．9456 1309.

B．9835 1309.

C．9835 6712.

D．9456 6712.

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第9题

翻译，Falls are the number one cause of accidental deaths in the home every year.

Falls are the number one cause of accidental deaths in the home every year.

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第10题

听力原文：Should I give you my home or office number？（A)Whatever I can reach you at.（B)I li

听力原文：Should I give you my home or office number？

(A) Whatever I can reach you at.

(B) I like working at my office.

(C) Yes, give me your phone number.

(31)

A．

B．

C．

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第11题

In cross-cultural training process, social adaptation can be affected by a number of factors including culture distance, communication and individual variables, such as .

A、interactions with the host culture

B、eagerness to go back

C、interactions with home culture

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