Now go through TEXT F quickly to answer question 52.
WORLD ECOLOGICAL AREA PROGRAM
A PROPOSAL TO SAVE THE WORLD'S
TROPICAL RAIN FORESTS.
The world's remaining tropical forests are being destroyed so fast that, at current trends, by the end of this century, only the most inaccessible will remain. This terrible tragedy will mean:
the destruction of the way of life of the indigenous peoples who inhabit these areas which must lead to their systematic pauperization i.e. to their transformation into a marginal, largely unemployed proletariat leading a miserable and precarious existence in the shanty towns surrounding already drastically over-crowed cities:
the disappearance of a considerable proportion of the world's trees and plant species, many of which have not been identified:
the disappearance in the world of much of the world's remaining wildlife, including large cats such as the tiger and clouded leopard and primates such as the gorilla and orange-tuna:
the loss of an inestimable reservoir of genetic resources that could be exploited to provide new foods, medicines, textiles, etc... and raw materials including bases for fuels which could be of vital importance in a largely unforeseeable future:
soil erosion by wind and water -- as most tropical soils have a low organic content and may become little more than dust, while others become brick-like late rite once they are deprived of their tree cover -- in any cases leading to eventual desertification:
massively increased run-off to rivers and, in particular, when their beds have been raised following erosion form the mountains above, to floods in the surrounding plains -- since only a fraction of the rainwater that can be stored around the root system of a tropical forest can be related in the eroded soils of bare mountainsides:
reduced transpiration and hence precipitation, with a further reduction in water availability:
increase in the CO2 released into the atmosphere but reduced absorption of C02 by depleted plant life with climatic consequences that are likely to be detrimental to world food production:
the loss of the soil's capacity to provide timber and other benefits on a more realistic but sustainable basis:
an aesthetic and scientific loss of unparalleled dimensions.
What, we might ask, will the countries who are cutting down their forests obtain in exchange? The answer is foreign currency largely to pug for imported consumer products that only a minority can afford and raw materials required for industrial development, which occurring as it must, in decreasingly propitious conditions, seem doomed to be short-lived.
TEXT G
First read the question.
53. How does the author evaluate the theories on the origin of language in the passage?
A. They are only speculations, up to now we have no way to disprove them.
B. They all have flaws, but if combined, they can successfully explain the origin of human language.
C. None of them is satisfactory.
D. They have some explanatory power except that they are out-of-date.
正確答案是
WORLD ECOLOGICAL AREA PROGRAM
A PROPOSAL TO SAVE THE WORLD'S
TROPICAL RAIN FORESTS.
The world's remaining tropical forests are being destroyed so fast that, at current trends, by the end of this century, only the most inaccessible will remain. This terrible tragedy will mean:
the destruction of the way of life of the indigenous peoples who inhabit these areas which must lead to their systematic pauperization i.e. to their transformation into a marginal, largely unemployed proletariat leading a miserable and precarious existence in the shanty towns surrounding already drastically over-crowed cities:
the disappearance of a considerable proportion of the world's trees and plant species, many of which have not been identified:
the disappearance in the world of much of the world's remaining wildlife, including large cats such as the tiger and clouded leopard and primates such as the gorilla and orange-tuna:
the loss of an inestimable reservoir of genetic resources that could be exploited to provide new foods, medicines, textiles, etc... and raw materials including bases for fuels which could be of vital importance in a largely unforeseeable future:
soil erosion by wind and water -- as most tropical soils have a low organic content and may become little more than dust, while others become brick-like late rite once they are deprived of their tree cover -- in any cases leading to eventual desertification:
massively increased run-off to rivers and, in particular, when their beds have been raised following erosion form the mountains above, to floods in the surrounding plains -- since only a fraction of the rainwater that can be stored around the root system of a tropical forest can be related in the eroded soils of bare mountainsides:
reduced transpiration and hence precipitation, with a further reduction in water availability:
increase in the CO2 released into the atmosphere but reduced absorption of C02 by depleted plant life with climatic consequences that are likely to be detrimental to world food production:
the loss of the soil's capacity to provide timber and other benefits on a more realistic but sustainable basis:
an aesthetic and scientific loss of unparalleled dimensions.
What, we might ask, will the countries who are cutting down their forests obtain in exchange? The answer is foreign currency largely to pug for imported consumer products that only a minority can afford and raw materials required for industrial development, which occurring as it must, in decreasingly propitious conditions, seem doomed to be short-lived.
TEXT G
First read the question.
53. How does the author evaluate the theories on the origin of language in the passage?
A. They are only speculations, up to now we have no way to disprove them.
B. They all have flaws, but if combined, they can successfully explain the origin of human language.
C. None of them is satisfactory.
D. They have some explanatory power except that they are out-of-date.
正確答案是