EXERCISE 24
Man has been storing up useful knowledge about himself and the universe at the rate which has been spiraling upward for 10000 years.
The __1_ took a sharp upward leap with the invention of writing,but even __2_ it remained painfully slow for several centuries.The next great leap forward __3_ knowledge acquisition did not occur __4_ the invention of movable type in the 15th century by Gutenberg and others.__5_ to 1500,by the most optimistic __6_,Europ was producing books at a rate of 1000 titles per year.This means that it __7_ a full century to produce a library of 100000 titles.By 1950,four and a half __8_later,the rate had accelerated so sharply that Europe was producing 120000 ttitles a year._9_ once took a century now took only ten months.By 1960,a __10_ decade later,the rate had made another significant jump,__11_ a century's work could be finished in seven and a half months.__12_,by the mid-sixties,the output of books on a world__13_,Europe included,approached the prodigious figure of 900 titles per day.
One can __14_ argue that every book is a net gain for the advancement of knowledge.Nevertheless we find that the accelerative __15_ in book publication does,in fact,crudely __16_ the rate at which man discovered new knowledge.For example,prior to Gutenberg __17_ 11 chemical elements were known.Antimony the 12th,was discovered __18_ the time he was working on his invention.It was fully 200 years since the 11th,arsenic,had been discovered.__19_ the same rate of discovery contioned,we could by now have added only two or three additional elements to the periodic table since Gutenberg.__20_,in the 450 years after the time,certain people discovered some seventy additional elements.And since 1900 we have been isolating the remaining elements not a rate of one every two centuries,but of one every three years.
1） A accumulation B development C knowledge D rate
2） A so B if C then D when
3） A to B by C from D in
4） A until B since C when D before
5） A as B due C prior D next
6） A examples B estimates C evidence D evaluation
7） A would take B had taken C was taking D would have taken
8） A decades B centuries C dozens D years
9） A this B these C it D what
10） A plain B historic C single D eventful
11） A now that B so that C as D when
12） A however B but C and D therefore
13） A scope B sphere C scale D stretch
14） A therefore B hardly C accordingly D therefore
15） A line B circle C diagram D curve
16） A fit B like C resemble D parallel
17） A about B only C more than D less than
18） A in B at C on D for
19） A as B had C if D with
20） A in addition B in turn C instead D in particular
參考答案：
1——5 DAAAC
6——10 BABDC
11——15 BCCBD
16——20 DBBBC
Man has been storing up useful knowledge about himself and the universe at the rate which has been spiraling upward for 10000 years.
The __1_ took a sharp upward leap with the invention of writing,but even __2_ it remained painfully slow for several centuries.The next great leap forward __3_ knowledge acquisition did not occur __4_ the invention of movable type in the 15th century by Gutenberg and others.__5_ to 1500,by the most optimistic __6_,Europ was producing books at a rate of 1000 titles per year.This means that it __7_ a full century to produce a library of 100000 titles.By 1950,four and a half __8_later,the rate had accelerated so sharply that Europe was producing 120000 ttitles a year._9_ once took a century now took only ten months.By 1960,a __10_ decade later,the rate had made another significant jump,__11_ a century's work could be finished in seven and a half months.__12_,by the mid-sixties,the output of books on a world__13_,Europe included,approached the prodigious figure of 900 titles per day.
One can __14_ argue that every book is a net gain for the advancement of knowledge.Nevertheless we find that the accelerative __15_ in book publication does,in fact,crudely __16_ the rate at which man discovered new knowledge.For example,prior to Gutenberg __17_ 11 chemical elements were known.Antimony the 12th,was discovered __18_ the time he was working on his invention.It was fully 200 years since the 11th,arsenic,had been discovered.__19_ the same rate of discovery contioned,we could by now have added only two or three additional elements to the periodic table since Gutenberg.__20_,in the 450 years after the time,certain people discovered some seventy additional elements.And since 1900 we have been isolating the remaining elements not a rate of one every two centuries,but of one every three years.
1） A accumulation B development C knowledge D rate
2） A so B if C then D when
3） A to B by C from D in
4） A until B since C when D before
5） A as B due C prior D next
6） A examples B estimates C evidence D evaluation
7） A would take B had taken C was taking D would have taken
8） A decades B centuries C dozens D years
9） A this B these C it D what
10） A plain B historic C single D eventful
11） A now that B so that C as D when
12） A however B but C and D therefore
13） A scope B sphere C scale D stretch
14） A therefore B hardly C accordingly D therefore
15） A line B circle C diagram D curve
16） A fit B like C resemble D parallel
17） A about B only C more than D less than
18） A in B at C on D for
19） A as B had C if D with
20） A in addition B in turn C instead D in particular
參考答案：
1——5 DAAAC
6——10 BABDC
11——15 BCCBD
16——20 DBBBC