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问题 填空题

一个两位的质数，如果将它的十位数字与个位数字交换后，仍是一个两位的质数，这样的质数可称为“特殊质数”，这样的“特殊质数”有______个．

答案

∵0、2、4、5、6、8 不能出现在这些数中的各个位数，（因为是质数，并且个位和十位要交换位置）

∴剩下的只有1、3、7、9这4个数字来组成，

又∵33、77、99是11的倍数，

∴排除33、77、99；

如果个位和十位数是3或者9的时候，那么得到的数字39、93又可以被3整除，

∴排除39、93，

若个位是1，十位是9组成的数是91，而91是7的倍数，

∴可排除19、91；

∴1、3、7、9这4个数中除去33、77、99、19、91组合以及39组合之后其他的就是正确答案：

11、13、17、31、37、71、73、79、97 共9个数．

故答案为：9．

选择题

下列环境因素中影响老鼠生活的生物因素是（　　）

A．草

B．光

C．水

D．空气
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问答题

(46) Globalization might be welcomed on many grounds—the economic, political, communicational, and even linguistic ones come readily to mind but it also has some unfortunate side effects that might prove deadly to the very future of mankind. This is no mere surmise of congenital misanthropes, but the expressed fear of some who are otherwise well disposed to it. Thus Thomas Friedman, in an otherwise optimistically minded book, nevertheless, writes as follows:
(47) The more I observed the system of globalization at work, the more obvious it was that it had unleashed forest-crushing forces of development, which if left unchecked had the potential to destroy the environment and uproot culture...
(48) And because globalization as a culturally homogenizing and environment-devouring force is coming on so fast, there is real danger that in just a few decades it will wipe out the ecological and cultural diversity that took millions of years of human and biological forces to produce.
Something is as ominous as all that is a real threat indeed. (49) And yet, despite such apprehensions, Friedman and others who think like him believe that effects of this magnitude can somehow be sidestepped without interfering with the technicizing sweep of globalization. Is that merely wishful thinking or an inability to take in the full import of his own words
As Friedman points out, the globalization threat is at once to nature and to culture: to the environment and the whole ecological variety of plants and animals, as well as to the quality of human life and the cultural diversity on which it depends. Damage to nature eventually translates itself as damage to culture, and vice versa. The fate of many ancient civilizations that collapsed because they outgrew their natural resources is historical proof of that fact. Our modern civilization is subject to the same self-limiting conditions. (50) Thus, if all agriculture is reduced to an agribusiness industry, then the diversified countryside landscape that humans have created since the Neolithic revolution will become a monocultural ecological desert, for with it will disappear a host of animal and plant species as well as a whole rural way of life with its myriad varieties of folk cultures that have been carried on for millennia. The loss of natural species through the destruction of their natural habitat is paralleled step by step by the loss of cultural "species" through the elimination of their social habitat, which is rooted in a natural environment. The clearing of jungles does not merely exterminate the animals living there, but also the native people whose homes have been there for countless generations.
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