21. Eliminating problems by transferring the blame to others is often called scape-goating。

　　21.用怪罪別人的辦法來解決問題通常被稱為尋找替罪羊。

　　22. The chief foods eaten in any country depend largely on what grows best in its climate and soil。

　　22.一個國家的主要食物是什么，大體取決于什么作物在其天氣和土壤條件下生長得最好。

　　23. Over a very large numberof trials, the probability of an event’s occurring is equal to theprobability that it will not occur。

　　23.在大量的實驗中，某一事件發(fā)生的幾率等于它不發(fā)生的幾率。

　　24. Most substance contractwhen they freeze so that the density of a substance’s solid is higherthan the density of its liquid。

　　24.大多數(shù)物質遇冷收縮，所以他們的密度在固態(tài)時高于液態(tài)。

　　25. The mechanism by which brain cells store memories is not clearly understood。

　　25.大腦細胞儲存記憶的機理并不為人明白。

　　26. By the middle of thetwentieth century, painters and sculptors in the United States hadbegun to exert a great worldwide influence over art。

　　26.到了二十一世紀中葉，美國畫家和雕塑家開始在世界范圍內對藝術產生重大影響。

　　27. In the eastern part of New Jersey lies the city of Elizabeth, a major shipping and manufacturing center。

　　27.伊麗莎白市，一個重要的航運和制造業(yè)中心，坐落于新澤西州的東部。

　　28. Elizabeth Blackwell, thefirst woman medical doctor in the United States, founded the New YorkInfirmary, an institution that has always had a completely femalemedical staff。

　　28. Elizabeth Blackwell，美國第一個女醫(yī)生，創(chuàng)建了員工一直為女性紐約診所。

　　29. Alexander Graham Bellonce told his family that he would rather be remembered as a teacher ofthe deaf than as the inventor of the telephone。

　　29. Alexander Graham Bell曾告訴家人，他更愿意讓后人記住他是聾子的老師，而非電話的發(fā)明者。

　　30. Because its leaves remain green long after being picked, rosemary became associated with the idea of remembrance。

　　30.采摘下的迷迭香樹葉常綠不衰，因此人們把迷迭香樹與懷念聯(lián)系在一起。

　　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?shù)拇驌簟?/p>

　　32. That xenon could not FORM chemical compounds was once believed by scientists。

　　32.科學家曾相信：氙氣是不能形成化合物的。

　　33. Research into thedynamics of storms is directed toward improving the ability to predictthese events and thus to minimize damage and avoid loss of life.

　　33.對風暴動力學的研究是為了提高風暴預測從而減少損失，避免人員傷亡。

　　34. The elimination ofinflation would ensure that the amount of money used in repaying a loanwould have the same value as the amount of money borrowed.  

　　34.消除通貨膨脹應確保還貸的錢應與所貸款的價值相同。

　　35. Futurism, an earlytwentieth-century movement in art, rejected all traditions andattempted to glorify contemporary life by emphasizing the machine andmotion。

　　35.未來主義，二十世紀早期的一個藝術思潮。拒絕一切傳統(tǒng)，試圖通過強調機械和動態(tài)來美化生活。

　　36. One of the wildest andmost inaccessible parts of the United States is the Everglades wherewildlife is abundant and largely protected。

　　36. Everglades是美國境內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’sinfluence was so significant that she has been credited by someauthorities as the originator of feminism in the United States。

　　37. Lucretia Mott’s的影響巨大，所以一些權威部門認定她為美國女權運動的創(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市場研究者廣闊。

　　39. The continental dividerefers to an imaginary line in the North American Rockies that dividesthe waters flowing into the Atlantic Ocean from those flowing into thePacific。

　　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 thegravity field of the Earth indicate that its crust and mantle yieldwhen unusual weight is placed on them。

　　40.對地球引力的研究表明，在不尋常的負荷之下地殼和地幔會發(fā)生位移。