In the experimentdescribed in Part 2, a set of word 33____was used to investigate whether blindand sighted people perceived the symbolism in abstract 34____in the same way.
原文：We gave a list of twenty pairs of words to sighted subjects...
同义替换：a set of = a list of ；was used = gave ；sighted people = sighted subjects
原文：Thus, we concluded that the blind interpret abstract shapes as sightedpeople do.
同义替换：perceived = interpret ；in the same way = as sightedpeople do
From the35____volunteers, everyone thought a circle fitted 'soft' while a square fitted'hard'.
原文：We gave a list of twenty pairs of words to sighted subjects and askedthem to pick from each pair the term that best related to a circle and the termthat best related to a square. ；All our subjects deemed the circle soft andthe sq uare hard.
同义替换：volunteers = subjects ； thought = deemed
However,only 51% of the 36____volunteers assigned a circle to 37____
原文：We gave a list of twenty pairs of words to sighted subjects and askedthem to pick from each pair the term that best related to a circle and the termthat best related to a square ；And only 51% linked deep to circle andshallow to square.
同义替换：volunteers = subjects
原文：And only 51% linked deep to circle and shallow to square.
同义替换：assigned a circle to = linked…… to circle
When the test waslater repeated with 38____volunteers, it was found that they made 39____choices.
原文：When we tested four totally blind volunteers using the same list, wefound that their choices closely resembled those made by the sighted subjects.
同义替换：repeated = using the same list
原文：we found that their choices closely resembled those made by the sightedsubjects.
同义替换：it was found = we found ; similar = resembled
38. The writeradmits that global warming is a 38____challenge
原文：So what of global warming? As we know, carbon dioxide emissions arecausing the planet to warm. The best estimates are that the temperatures willrise by 2-3°C in this century ; Yet the cost of reducing carbon dioxideemissions, for the United States alone, will be higher than the cost of solvingthe world's single, most pressing health problem: providing universal access toclean drinking water and sanitation.
39. but says that itwill not have a catastrophic impact on our future, if we deal with it in the39____way.
原文：It is crucial that we look at the facts if we want to make the bestpossible decisions for the future. It may be costly to be overly optimistic -but more costly still to be too pessimistic.
同义替换：deal with = make decisions
40. He feels itwould be better to spend money on the more 40____health problem of providingthe world's population with clean drinking water.
原文：Yet the cost of reducing carbon dioxide emissions, for the UnitedStates alone, will be higher than the cost of solving the world's single, mostpressing health problem: providing universal access to clean drinking water andsanitation.
同义替换：it would be better to spend money on = thecost of ……will be higher than the cost of ; world's = universal ; providingwith = providing access to ; urgent = pressing
24. In addition tothe problem of coastal erosion, there has been a marked increase in the levelof 24____contained in the silt deposited in the Nile delta.
原文：Pollutants are building up faster and faster...; ln Manzalah Lagoon,for example, the increase in mercury, lead, copper and zinc...
同义替换：a marked increase = are building up fasterand faster
To deal with this.Stanley suggests the use of 25____in the short term, and increasing the amountof water available through 26____in the longer term
25. 答案：A artificial floods
原文：In the immediate future, Stanley believe that one solution would be tomake artificial floods...
同义替换：deal with = one solution ; suggests =believe; in the short term = In the immediate future
原文：He says, however, that in the long term an alternative process such asdesalination may have to be used to increase the amount of water available.
18. Toughened glass is favoured by architects because it is muchstronger than ordinary glass, and the fragments are not as 18____when itbreaks.
原文：This glass has five times the strength of standard glass, and whenit does break it shatters into tiny cubes rather than large, razor-sharpshards.
同义替换：much stronger = five times the strength ; ordinary glass = standardglass ; fragments = tiny cubes ; sharp = razor-sharp
19. However, ithas one disadvantage: it can shatter 19______
原文：The time that elapses before failure occurs is unpredictable.
同义替换：unexpectedly = unpredictable
20. Ordinary glass is first heated, then cooled very 20______
原文：It is made by heating a sheet of ordinary glass to about 620°C tosoften it slightly, allowing its structure to expand, and then cooling itrapidly with jets of cold air.
同义替换：quickly = rapidly
21. Theouter layer 21_____ before the inner layer, and the tension between the twolayers which is created because of this makes the glass stronger.
原文：This causes the outer layer of the pane to contract and solidifybefore the interior.
22. These are unstable, and can expand suddenly, particularly if theweather is 22______
原文：It could happen just months after manufacture, or decades later,although if the glass is heated – by sunlight, for example - the process isspeeded up.
同义替换：unstable = just months after manufacture, or decades later ; warm =heated – by sunlight
23. If this happens,the pane of glass may break. The frequency with which such problems occur is23______by glass experts.
原文：But he insists that cases are few and far between. 'It's a very rarephenomenon,' he says.
同义替换：frequency = few and far between ; disputed = disagree