10. the author mentions the nile perch¹ in order to provide an example of
(a) a species that has become extinct through human activity
(b) the typical lack of foresight² that has led to biogeographic disaster
(c) a marine³ animal species that survived the permian extinctions
(d) a species that is a potential source of material wealth
(e) the kind of action that is necessary to reverse the decline in species diversity
11. all of the following are explicitly⁵ mentioned in the passage as contributing to the extinction⁴ of species except
(a) hunting
(b) pollution
(c) deforestation
(d) the growth of human populations
(e) human-engineered changes in the environment
12. the passage suggests which one of the following about material and cultural wealth?
属于信息题（中可定位的）
because we can readily assess the value of material and cultural wealth, we tend not to take them for granted.
just as the biota⁶ is a source of potential material wealth, it is an untapped source of cultural wealth as well.
some degree of material and cultural wealth may have to be sacrificed if we are to protect our biological heritage.
material and cultural wealth are of less value than biological wealth because they have evolve over a shorter period of time.
material wealth and biological wealth are interdependent in a way that material wealth and cultural wealth are not.
13. the author would be most likely to agree with which one of the following statements about the consequences of the biodiversity crisis?
the loss of species diversity will have as immediate⁷ an impact on the material of nations as on their biological wealth.
the crisis will likely end the hegemony of the human race and bring about the ascendancy⁸ of another species.
the effects of the loss of species diversity will be dire⁹, but we cannot yet tell how dire.
it is more fruitful to discuss the consequences of the crisis in terms of the potential loss to humanity than in strictly¹⁰ biological loss to humanity than in strictly biological terms.
the consequences of the crisis can be minimized, but the pace of extinctions can not be reversed

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