波音B-52亞音速遠程戰(zhàn)略轟炸機的綽號是“同溫層堡壘”。

A、對

B、錯

氫彈之父、物理學家愛德華·特勒曾設想：向空中拋灑鋁和硫的粉末，給地球降溫。特勒提出的辦法是要模仿大規(guī)模的火山爆發(fā)。l991年，波及范圍達數(shù)百萬千米的皮納圖博火山灰使地球氣溫下降了0．41℃，而且持續(xù)時間達好幾個星期。但生物化學家們卻給這種主張潑冷水，他們認為，散布于空中的這些硫和鋁的微粒，很可能會嚴重干擾同溫層。特勒還與人合作過其他使地球降溫的方法：在軌道上放置5萬面反射鏡；發(fā)射一顆巨大的衛(wèi)星，懸于地球與太陽之間，以擋住部分太陽輻射。

通過以上文字我們不能得出的是()。

A．向空中拋灑鋁和硫的粉末，可以給地球降溫

B．火山灰的主要成分是硫和鋁

C．特勒曾與人合作試驗過在軌道上放置反光鏡給地球降溫的方法

D．愛德華·特勒為了研究給地球降溫進行過仔細的研究

Fear of Dearth (缺乏)

(1) I hate jogging. Every dawn, as I thud around New York City’s Central Park reservoir, I am reminded of how much I hate it. It’s so tedious. Some claim jogging is thought (conducive); others insist the scenery relieves the monotony. For me, the pace is wrong for contemplation of either ideas or vistas. While jogging, all I can think about is jogging—or nothing. One advantage of jogging around a reservoir is that there’s no dry shortcut home.

(2) From the listless looks of some fellow trotters, I guess I am not alone in my unenthusiasm: Bill-paying, it seems, would be about as diverting. Nonetheless, we continue to jog; more, we continue to choose to jog. From a practically infinite array of opportunities, we select one that we don’t enjoy and can’t wait to have done with. Why?

(3) For any trend, there are as many reasons as there are participants. This person runs to lower his blood pressure. That person runs to escape the telephone or a (cranky) spouse or a filthy household. Another person runs to avoid doing anything else, to dodge a decision about how to lead his life or a realization that his life is (leading nowhere). Each of us has his carrot and stick. In my case, the stick is my slackening physical condition, which keeps me from beating opponents at tennis whom I overwhelmed two years ago. My carrot is to win.

(4) Beyond these completely different reasons, however, lies a deeper cause. It is no accident that now, in the last third of the twentieth century, personal fitness and health have suddenly become a popular obsession. True, modern man likes to feel good, but that hardly distinguishes him from his predecessors.

(5) With amusingly ridiculous myopia (目光短淺), economists like to claim that the deeper cause of everything is economic. Delightfully, there seems no marketplace explanation for jogging. True, jogging is cheap, but then not jogging is cheaper. And the scant and simple equipment which jogging demands must make it a marketer’s least favored form of recreation.

(6)Some scout-masterish philosophers argue that the appeal of jogging and other body-maintenance programs is the discipline they afford. We live in a world in which individuals have fewer and fewer obligations. The work week has shrunk. Weekend worship is less compulsory. Technology gives us more free time. Satisfactorily filling free time requires imagination and effort. Freedom is a wide and risky river; it can drown the person who does not know how to swim across it. The more obligations one takes on, the more time one occupies, the less threat freedom poses. Jogging can become an instant obligation. For a portion of his day, the jogger is not his own man; he is obedient to a regimen he has accepted.

(7)Theologists may take the argument one step further. It is our modern irreligion, our lack of confidence in any hereafter, that makes us anxious to stretch our mortal stay as long as possible. We run, as the saying goes, for our lives, hounded by the suspicion that these are the only lives we are likely to enjoy.

(8) All of these theorists seem to me more or less right. As the growth of cults and charismatic religions and the resurgence of enthusiasm for the military draft suggest, we do crave commitment. And who can doubt, watching so many middle-aged and older persons torturing themselves (in the name of fitness), that we are unreconciled to death, more so perhaps than any generation in modern memory?

(9) But I have a hunch (預感) that there’s a further explanation of our (obsession with exercise). I suspect that what motivates us even more than a fear of death is a fear of dearth. Our era is the first to anticipate the eventual depletion of all natural resources. We see wilderness shrinking; rivers losing their capacity to sustain life; the air, even the stratosphere (同溫層), being loaded with potentially deadly junk. We see the irreplaceable being squandered, and in the depths of our consciousness we are fearful that we are creating an uninhabitable world. We feel more

在平流層中所不具有的是（）

A、空氣只有水平方向的流動

B、沒有雨雪現(xiàn)象

C、壓強、密度隨高度的增加而降低

D、平流層內溫度常年保持在-56.5℃，因此又被稱為同溫層

有關平流層特征及衛(wèi)生學意義哪一項論述是錯誤的

A．平流層在對流層之上

B．平流層又分兩個亞層：同溫層和臭氧層

C．臭氧層能吸收短波紫外線，保護人體不受短波紫外線傷害

D．同溫層在臭氧層下面

E．各種氣象現(xiàn)象都是在平流層中發(fā)生