[原创]8.17 一战 JJ贡献

tryyoutry

760!!! 恭喜恭喜！

CR: 一种鱼，在它生存的范围里没有predator, 政府为了控制这种鱼的增长，奖励那些捕到这种鱼的渔民。通过这种措施，就能使这种鱼不危害到这里的其他一些珍稀鱼类。问evaluate措施是否成功。

 mm 还记得这题你选的答案吗？

[此贴子已经被作者于2006-8-18 5:38:51编辑过]

ondesert

恭喜楼主,请问阅读亚当斯密是哪篇啊

tinashih8800

求x>=2, y<=3, 和y<=9-x 围成的面积
    

Solution:
    

Y<=9-X
    

when x = 2, y =  6 --- can't be true, because y<=3
    

when y = 3, x = 6 --- true, because x>=2
    

3 * 6 / 2 = 9 #
    

 

tinashih8800

SC ：GWD-25-Q5

For many revisionist historians, Christopher Columbus has come to personify devastation and enslavement in the name of progress that has decimated native peoples of the Western Hemisphere.
                

A.    devastation and enslavement in the name of progress that has decimated native peoples of the Western Hemisphere
                

B.     devastation and enslavement in the name of progress by which native peoples of the Western Hemisphere decimated

C.     devastating and enslaving in the name of progress those native peoples of the Western Hemisphere which in the name of progress are decimated.

D.    devastating and enslaving those native peoples of the western Hemisphere which in the name of progress are decimated.

E.     the devastation and enslavement in the name of progress that have decimated the native peoples of the Western Hemisphere.

我選答案A
    

 

 一道GWD：
            

People who have spent a lot of time in contact with animals often develop animal-induced allergies, some of them quite serious. In a survey of current employees in major zoos, about 30 percent had animal-induced allergies. Based on this sample, experts conclude that among members of the general population who have spent a similarly large amount of time in close contact with animals, the percentage with animal-induced allergies is not 30 percent but substantially more.

Which of the following, if true, provides the strongest grounds for the experts’ conclusion?

A.    A zoo employee who develops a serious animal-induced allergy is very likely to switch to some other occupation.

B.     A zoo employee is more likely than a person in the general population to keep one or more animal pets at home

C.     The percentage of the general population whose level of exposure to animals matches that of a zoo employee is quite small.

D.    Exposure to domestic pets is, on the whole, less likely to cause animal-induced allergy than exposure to many of the animals kept in zoos.

E.     Zoo employees seldom wear protective gear when they handle animals in their care.

我選答案B

我選答案B

miaomiaomiao

这个cr题，gwd上不是选a吗？是有争议题吗

miaomiaomiao

以下是引用tryyoutry在2006-8-18 0:46:00的发言：

760!!! 恭喜恭喜！

CR: 一种鱼，在它生存的范围里没有predator, 政府为了控制这种鱼的增长，奖励那些捕到这种鱼的渔民。通过这种措施，就能使这种鱼不危害到这里的其他一些珍稀鱼类。问evaluate措施是否成功。

 mm 还记得这题你选的答案吗？

猜一下，是不是捕杀了这种鱼后，还有没有其他因素（predator或污染等）会危害这种珍惜鱼类？？

jandjshi

恭喜恭喜! 八月的喜讯.

哈佛情人

恭喜楼主！！！

cournot

同意sc答案是a，

CR答案是A吧？

A.    A zoo employee who develops a serious animal-induced allergy is very likely to switch to some other occupation.

经常换工作的zoo employee- 得病率为30%,

那么大众人群-比zoo employee 接触动物时间多=>得病率高于30%

经常换工作的zoo employee- 得病率为30%,

那么大众人群-比zoo employee 接触动物时间多=>得病率高于30%

jandjshi

I agree with A, but my reasoning is different than that of cournot mm. The conclusion is made under the condition that general population will spent a similarly large amount of time in close contact with animals, and, therefore, the answer should be independent of the time spent with animals.

 

In choice A, zoo employees who develop a severe allergy quit the job, resulting in the remaining employees relatively immune to allergy. As a result, zoo employees as a whole is less likely than general population to develop allergy.