看看大家有多少会上这道题选项的当Ozone - Amphibian populations

blvicky · 发表于 2009-12-27 21:50:05

Amphibian populations are declining in numbers worldwide. Not coincidentally, the earth's ozone layer has been continuously depleted throughout the last 50 years. Atmospheric ozone blocks UV-B, a type of ultraviolet radiation that is continuously produced by the sun, and which can damage genes. Because amphibians lack hair, hide, or feathers to shield them, they are particularly vulunerable to UV-B radiation. In addition, their relatinous eggs lack the protection of leathery or hard shells, Thus, the primary cause of the declining amphibian population is the depletion of the ozone layer.

Each of the following, if true, would strengthen the argument EXCEPT:

A. Of the various types of radiation blocked by atmospheric ozone, UV-B is the only type that can damage genes.

B. Amphibian populations are declining far more rapidly than are the populations of nonamphibian species whose tissues and eggs have more natural protection from UV-B.

C. Atmospheric ozone has been significantly depleted above all the areas of the world in which amphibian populations are declining.

D. The natural habitat of amphibians has not become smaller over the past century.

E. Amphibian populations have declined continuously for the last 50 years.

prayer · 发表于 2009-12-28 09:54:52

答案是E？？

prayer · 发表于 2009-12-28 09:59:36

查了一下，答案是A，再琢磨一下去

prayer · 发表于 2009-12-28 12:24:08

Amphibian populations are declining in numbers worldwide. Not coincidentally, the earth's ozone layer has been continuously depleted throughout the last 50 years. Atmospheric ozone blocks UV-B, a type of ultraviolet radiation that is continuously produced by the sun, and which can damage genes. Because amphibians lack hair, hide, or feathers to shield them, they are particularly vulunerable to UV-B radiation. In addition, their relatinous eggs lack the protection of leathery or hard shells, Thus, the primary cause of the declining amphibian population is the depletion of the ozone layer.

Each of the following, if true, would strengthen the argument EXCEPT:

A. Of the various types of radiation blocked by atmospheric ozone, UV-B is the only type that can damage genes.

B. Amphibian populations are declining far more rapidly than are the populations of nonamphibian species whose tissues and eggs have more natural protection from UV-B.

C. Atmospheric ozone has been significantly depleted above all the areas of the world in which amphibian populations are declining.

D. The natural habitat of amphibians has not become smaller over the past century.

E. Amphibian populations have declined continuously for the last 50 years.

-- by 会员 blvicky (2009/12/27 21:50:05)

BCDE都跟原文由相关联的。

A的，取非，对原文不加强也不削弱，只是重复了原文的意思

blvicky · 发表于 2009-12-28 14:50:08

啊哦，虽然选择A是正确的，可得出选A的逻辑感觉像在猜。 prayer 你是在哪里看到的BCDE的这种解释？

Amphibian populations are declining in numbers worldwide. Not coincidentally, the earth's ozone layer has been continuously depleted throughout the last 50 years. Atmospheric ozone blocks UV-B, a type of ultraviolet radiation that is continuously produced by the sun, and which can damage genes. Because amphibians lack hair, hide, or feathers to shield them, they are particularly vulunerable to UV-B radiation. In addition, their relatinous eggs lack the protection of leathery or hard shells, Thus, the primary cause of the declining amphibian population is the depletion of the ozone layer.

Each of the following, if true, would strengthen the argument EXCEPT:

A. Of the various types of radiation blocked by atmospheric ozone, UV-B is the only type that can damage genes.

B. Amphibian populations are declining far more rapidly than are the populations of nonamphibian species whose tissues and eggs have more natural protection from UV-B.

C. Atmospheric ozone has been significantly depleted above all the areas of the world in which amphibian populations are declining.

D. The natural habitat of amphibians has not become smaller over the past century.

E. Amphibian populations have declined continuously for the last 50 years.

-- by 会员 blvicky (2009/12/27 21:50:05)

BCDE都跟原文由相关联的。

A的，取非，对原文不加强也不削弱，只是重复了原文的意思

-- by 会员 prayer (2009/12/28 12:24:08)

prayer · 发表于 2009-12-28 15:55:55

没看到解释，只是在Google里搜到答案是A。标红的是我弄的。

zzq1978 · 发表于 2009-12-28 21:36:42

的确很有迷惑性，真是设计得非常好的一道题目！
“Of the various types of radiation blocked by atmospheric ozone, UV-B is the only type that can damage genes.”

可以这么理解：如果OZONE阻止的射线中，除了UV-B,还有10000种射线，都可以伤害gene的话，这加强了还是削弱了argument？
我直觉是：加强了argument。
所以，如果说只有一种UV-B的话，那反而是削弱了argument

Zspirit · 发表于 2009-12-29 02:11:55

A既不增强也不削弱，它没有提供任何新信息，只是对已有信息进行说明
其他选项要么引入了将Amphibian数量的减少和UV-B/Ozone关联的新信息(BCE），要么排除了Amphibian数量减少和其他因素有关的可能性(D)

prayer · 发表于 2009-12-29 13:12:53

如果原文的结论是uv-b射线造成了amphibian的数量减少，那么A就是加强。但文中是o-zone跟amphibian的关系

Beilo · 发表于 2012-4-12 15:32:32

做费费逻辑，里面给的答案竟然是D！死活想不通，我自己做的是A………………

看看大家有多少会上这道题选项的当Ozone - Amphibian populations

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