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　　31. Although apparently rigid, bones exhibit a degree of elasticity that enables the skeleton to withstand considerable impact.
　　31.骨頭看起來是脆硬的，但它也有一定的彈性，使得骨骼能夠承受相當(dāng)?shù)拇驌簟?br /> 　　32. That xenon could not FORM chemical compounds was once believed by scientists.
　　32.科學(xué)家曾相信：氙氣是不能形成化合物的。
　　33. Research into the dynamics of storms is directed toward improving the ability to predict these events and thus to minimize damage and avoid loss of life.
　　33.對風(fēng)暴動力學(xué)的研究是為了提高風(fēng)暴預(yù)測從而減少損失，避免人員傷亡。
　　34. The elimination of inflation would ensure that the amount of money used in repaying a loan would have the same value as the amount of money borrowed.
　　34.消除通貨膨脹應(yīng)確保還貸的錢應(yīng)與所貸款的價值相同。
　　35. Futurism, an early twentieth-century movement in art, rejected all traditions and attempted to glorify contemporary life by emphasizing the machine and motion.
　　35.未來主義，二十世紀(jì)早期的一個藝術(shù)思潮。拒絕一切傳統(tǒng)，試圖通過強調(diào)機械和動態(tài)來美化生活。
　　36. One of the wildest and most inaccessible parts of the United States is the Everglades where wildlife is abundant and largely protected.
　　36. Everglades是美國境內(nèi)最為荒涼和人跡罕至的地區(qū)之一，此處有大量的野生動植物而且大多受(法律)保護。
　　37. Lucretia Mott's influence was so significant that she has been credited by some authorities as the originator of feminism in the United States.
　　37. Lucretia Mott's的影響巨大，所以一些權(quán)威部門認(rèn)定她為美國女權(quán)運動的創(chuàng)始人。
　　38. The activities of the international marketing researcher are frequently much broader than those of the domestic marketer.
　　38.國際市場研究者的活動范圍常常較國內(nèi)市場研究者廣闊。
　　39. The continental divide refers to an imaginary line in the North American Rockies that divides the waters flowing into the Atlantic Ocean from those flowing into the Pacific.
　　39.大陸分水嶺是指北美洛磯山脈上的一道想象線，該線把大西洋流域和太平洋流域區(qū)分開來。
　　40. Studies of the gravity field of the Earth indicate that its crust and mantle yield when unusual weight is placed on them.
　　40.對地球引力的研究表明，在不尋常的負(fù)荷之下地殼和地幔會發(fā)生位移。
　　41. The annual worth of Utah's manufacturing is greater than that of its mining and farming combined.
　　41.尤它州制造業(yè)的年產(chǎn)值大于其工業(yè)和農(nóng)業(yè)的總和。
　　42. The wallflower is so called because its weak stems often grow on walls and along stony cliffs for support.
　　42.墻花之所以叫墻花，是因為其脆弱的枝干經(jīng)常要靠墻壁或順石崖生長，以便有所依附。
　　43. It is the interaction between people, rather than the events that occur in their lives, that is the main focus of social psychology.
　　43.社會心理學(xué)的主要焦點是人與人之間的交往，而不是他們各自生活中的事件。
　　44. No social crusade aroused Elizabeth Williams' enthusiasm more than the expansion of educational facilities for immigrants to the United States.
　　44.給美國的新移民增加教育設(shè)施比任何社會運動都更多的激發(fā)了Elizabeth Williams的熱情。
　　45. Quails typically have short rounded wings that enable them to spring into full flight instantly when disturbed in their hiding places.
　　45.典型的鵪鶉都長有短而圓的翅膀，憑此他們可以在受驚時一躍而起，飛離它們的躲藏地。