[单项选择]Computer data bases and electronic mail systems have been around since the late 1970s.（）
A. 计算机数据库和电子邮件自20世纪70年代末，便无处不在了。
B. 20世纪70年代后期以来，计算机数据库和电子邮件系统已被广泛使用。
C. 20世纪70年代末，计算机数据基础和电子邮递系统就已经在大家周围了。
D. 在20世纪70年代后期，计算机数据库和电子邮件已普及了。

[填空题]With the introduction of the electronic computer, there are no complicated problems _____ can be solved.

[单项选择]Today the electronic computer is used in solving mathematical problems having to do with weather forecasting and putting satellite into orbit ( 轨道 ).（）
A. 今天电子计算机应用于解决一些数学问题，这些问题不得不处理天气预报和把卫星送入轨道。
B. 今天电子计算机被用于解决数学问题，这些问题与天气预报和把卫星送入轨道有关。
C. 今天电子计算机不得不被用于解决天气预报和把卫星送入轨道一类的数学问题。
D. 今天电子计算机不得不被用解决数学问题的方法处理天气预报和把卫星送入轨道等问题。

[填空题]An electronic computer is ___________________ (由许多元件组成，每一元件都有自己的功能).

[填空题]Electronic mail systems are either computerized or noncomputerized. Important among the computerized systems are the (15)_________________ones organized into (16)____________of various sizes. Most noncomputerized electronic mail system such as (17)________________units of various kinds are simple, turnkey systems that require little effort to (18)_____________. Though often of value in (19)_______________applications, these systems have only interim(间歇) worth in office automation unless they can be electronically integrated. 　　Communication in an EMS is either synchronous or nonsynchronous. People involved in synchronous communication must (20)______________________________________________________________________, such as (21)__________________________________________________. A nonsynchronous system (22)_________________________________at different times. 　　Electronic systems output soft copy or hard copy. Soft copy (23)__________________________, but many applications will (24)___

[单项选择]

Maintaining internal e-mail systems has long been the bane of the university information-technology director. Servers are unwieldy and unreliable, and in the past several years, the number of student complaints has grown exponentially as forward-moving providers like YahooMail, Hotmail, and Gmail have increased expectations of what E-mail should offer. The solution for a number of colleges has been to wave the white flag and outsource E-mail hosting to the experts.
Microsoft, which owns Hotmail, and Google (Gmail) are the biggest players in the educational E-mail hosting market. Along with the neat-o peripheral gizmos like messaging, calendars, and collaboration tools, the outsourced systems are more stable, have better spam filters, and provide much more storage space than the typical university’s in-house system. At the University of Pennsylvania, its old E-mail service gave students 60 megabytes of storage, just 3 percent of the 2 gigabytes Windows Live now provi
A. University information-technology director refused to replace outdated e-mail systems with new ones.
B. University information-technology director has failed to upgrade the school servers.
C. Maintaining internal E-mail systems is a tough job for university information-technology director.
D. The information-technology director is skilled in providing IT-related assistance.