Why does the idea of progress loom so large in the modern world?Surely because progress of a particular kind is actually(1)place around us and is becoming(2)manifest(明显的).
(3)mankind has undergone no general improvement in intelligence or morality,ithas made(4)progress in the accumulation of knowledge.Knowledge began(5)assoon as the thoughts of one individual could be communicated(6)another by(7)of speech.
(8)the invention of writing,a great advance was made,for knowledge could then be not only communicated but also(9).Libraries made education(10),and education in its turn added(11)libraries:the growth of knowledge followed a kind of compound interest law,(12)was greatly enhanced by the invention of(13).All this wascomparatively slow until,with the coming of science,the tempo(速率)was suddenly(14).Then knowledge began to be accumulated according to a systematic plan.The tricklebecame a stream;the stream has now(15)a torrent.Moreover,(16)soon as new knowledge is acquired,it is now turned(17)practical account.What is called modern civilization is not the result of a(18)development of all men's nature,(19)of accumulated knowledge applied(20)practical life.
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