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发布时间:2023-10-22 00:13:28

[单项选择]A(n)______ allows users to scramble and unscramble their messages easily without a third partyintruding.
A. DES
B. signing messages
C. encrypt
D. firebreak

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[单项选择]A multimedia system allows end users to share, transfer and process a variety of forms of information in a (70) manner.
A. fixed
B. fix
C. unifying
D. unified
[单项选择]

Telecommunications allows people around the World to contact one another, to access information instantly, and to communicate from remote areas. Telecommunications usually involves a sender of information and one or more recipients(收件人) linked by a technology, such as a telephone system, that transmits information from one place to another. Telecommunications devices convert different types of information, such as sound and video, into electronic signals. The signals can then be transmitted by means of media such as telephone wires or radio waves. When a signal reaches its destination, the device on the receiving end converts the electronic signal back into an understandable message, such as sound over a telephone, moving images on a television, or words and pictures on a computer screen. Telecommunications enables people to send and receive personal messages across town, between countries, and to and from outer space. It also provides the key medium for news, data, information&r
A. get…immediately
B. enter...at once
C. transmit... at once
D. send... immediately

[填空题]

Caring for your clothes is important as it allows you and your family to look and feel fresh and clean. But Comfort does more than this. It helps you and your loved ones feel cared for every day.New ideas to soften everyday life
As well as delivering exceptional softness, our range of fabric conditioners now includes a variety of sensuous (给人以美的享受的) fragrances, enabling you to give your family’s clothes that little bit of extra care and freshness. "Wild pear and gingko (银杏)", "lily and rose" and "passion flower and ylang ylang (依兰树)" are just some of the new versions we’vedeveloped.Infusing freshness
Our new easy-iron product, Comfort Vaporesse, is equally innovative. Simply pour it into your iron and it makes ironing a breeze, infusing your clothes with a freshness that lasts.Unique technology
To speed up drying, we’ve launched Comfort Fast Dry. With its unique patented technology, Fast Dry removes t

[单项选择]Most Facebook users
A. enjoy birthday celebrations in real life.
B. like the Facebook birthday celebrations function.
C. avoid birthday celebrations both online and offline.
D. are unaware of Facebook birthday celebrations.
[填空题]College students are heavy Internet users.


[单项选择]Why this otherwise excellent newspaper allows such an article to be printed is ( ) me.
A. above
B. outside
C. beside
D. beyond
[填空题]The new system now allows faxes to be sent round the world ______ (以最省事、最安全的方式).
[单项选择]Computer power now allows automatic searches of fingerprint files to match a print at a crime()
A. stage
B. scene
C. location
D. occasion
[填空题]Ammonia added in cigarettes allows smokers to inhale more nicotine.


[填空题]Money allows people to accumulate wealth because they can save as much wheat as they like.


[填空题]Added ammonia in cigarettes allows smokers to inhale more nicotine.


[简答题]The system of flexible working hours allows workers to start and finish work whenever they want. But there are two requirements. First, all workers must be present for certain "key" times in day. Second, all workers must work an agreed total number of hours per week.


[单项选择]The number of Internet users in China has increased by 28 percent and (1) 87 million, according to a (2) released yesterday by China Internet Network Information Center.
The Internet users now account for 6.72 percent of the (3) population of the world’s most populous country, 0.5 percent (4) over the end of last year. It is, (5) , still below the world’s average rate of 12.2 percent and is even lower (6) the rate in developed countries which range from 63 percent in Canada to 77 percent in Sweden.
The report defines a Chinese citizen (7) uses Internet for at least an hour a week as an Internet user. "The figure didn’t (8) users in Macau, Hong Kong and Taiwan," it said.
The survey, which is (9) through online questionnaire and offline interview, said the error margin of the online population is 5 percent.
The (10) of broadband users, totaling 31.1 million as at the e
A. contain
B. in
C. include
D. have

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