新概念英語第三冊：Predicting the future

新概念一直被視為英語學習的經(jīng)典教材，為了讓同學們能夠更加全面完善的學習新概念英語第三冊，新東方網(wǎng)英語頻道將幫助同學們一起總結知識點。

Predicting the future 預測未來

Predicting the future is notoriously difficult. Who could have imagined, in the mid 1970s, for example, that by the end of the 20th century, computers would be as common in people's homes as TV sets? In the 1970s, computers were common enough, but only in big business, government departments, and large organizations. These were the so-called mainframe machines. Mainframe computers were very large indeed, often occupying whole air-conditioned rooms, employing full-time technicians and run on specially-written software. Though these large machines still exist, many of their functions have been taken over by small powerful personal computers, commonly known as PCs.

眾所周知，預測未來是非常困難的。舉個例子吧，在20世紀70年代中葉又有誰能想得到在20世紀末的時候，家庭用的計算機會像電視機一樣普遍?在70年代，計算機已經(jīng)相當普及了，但只用在大公司，政府部門和大的組織之中，它們被稱為主機。計算機主機確實很大，常常占據(jù)了裝有空調的多間房間，雇用專職的技師，而且得用專門編寫的軟件才能運行。雖然這種大計算機仍然存在，但它們的許多功能已被體積小但功能齊全的個人電腦——即我們常說的PC機——所代替了。

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