战友们请帮解答一下GWD-1-13

higoodspeed

One proposal for pre-

serving rain forests is to                        

promote the adoption of

Line  new agricultural technolo-

  (5)        gies, such as improved

plant varieties and use of

chemical herbicides, which

would increase productivity

and slow deforestation by

 (10)        reducing demand for new

cropland.  Studies have

shown that farmers in

developing countries who

have achieved certain levels

 (15)        of education, wealth, and

security of land tenure are

more likely to adopt such

technologies.  But these

studies have focused on

 (20)        villages with limited land

that are tied to a market

economy rather than on

the relatively isolated, self-

sufficient communities with

 (25)        ample land characteristic of

rain-forest regions.  A recent

study of the Tawahka people

of the Honduran rain forest

found that farmers with some

 (30)        formal education were more

likely to adopt improved plant

varieties but less likely to

use chemical herbicides

and that those who spoke

 (35)        Spanish (the language of

the market economy) were

more likely to adopt both

technologies.  Nonland

wealth was also associated

 (40)        with more adoption of both

technologies, but availability

of uncultivated land reduced

the incentive to employ the

productivity-enhancing tech-

 (45)        nologies.  Researchers

also measured land-tenure

security: in Tawahka

society, kinship ties are a

more important indicator of

 (50)        this than are legal property

rights, so researchers

measured it by a house-

hold’s duration of residence

in its village.  They found

 (55)        that longer residence cor-

related with more adoption

of improved plant varieties

but less adoption of

chemical herbicides.

Q13:

The findings of the study mentioned in line 27, if valid for rain-forest regions in general, suggest that which of the following is an obstacle most likely to be faced by those wishing to promote rain-forest preservation by implementing the proposal mentioned in line 1?

 

1. Lack of legal property rights tends to discourage local farmers from investing the time and resources required to successfully implement new agricultural technologies.
2. The ability to evaluate the wider economic ramifications of adopting new aricultural technologies depends on a relatively high level of formal education.
                   
3. Isolation from the market economy tends to restrict local farmers’ access to new agricultural technologies that could help them to increase their productivity.
                       
4. Ready availability of uncultivated land tends to decrease local farmers’ incentive to adopt new agricultural technologies that would reduce their need to clear new land for cultivation. 
5. Traditions of self-sufficiency and reliance on kinship ties tend to diminish local farmers’ receptivity to new agricultural technologies introduced by people from outside the local community.
                   

各位战友可以帮我解释一下为什么会是D呢?

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