【正文】 erials such as plants and clay into power and then adding water.，然后加水。75. Though once quite large, the population of the bald eagle across North America has drastically declined in the past forty years.，但在近四十年中全北美的禿頭鷹數(shù)量急劇下降。79. The practice of making excellent films based on rather obscure novels has been going on so long in the United States as to constitute a tradition.，已經(jīng)成為傳統(tǒng)。他在那里正式任職長(zhǎng)達(dá)整整一代人的時(shí)間。它能做的最敏捷的動(dòng)作就是揮一揮它彎曲的胳膊。89. Because of the space crunch, the Art Museum has bee increasingly cautious in consideringacquisitions and donations of art, in some cases passing up opportunities to strengthen is collections.，藝術(shù)博物館在考慮購(gòu)買(mǎi)和接受捐贈(zèng)的藝術(shù)品是越來(lái)越慎重，有些情況下放棄其進(jìn)一步改善收藏的機(jī)會(huì)。93. Insects would make it impossible for us to live in the world。95. There is only one difference between an old man and a young one: the young man has a glorious futurebefore him and old one has a splendid future behind him: and maybe that is where the rub is.：年輕人的前面有輝煌的未來(lái)，老年人燦爛的未來(lái)卻已在它們身后。他們不是焦慮的向上爬的人，他們不會(huì)對(duì)物質(zhì)性的東西難舍難分。蝙蝠這種回響定位法常拿來(lái)和原理與之很相近似的雷達(dá)相比。在紛雜的塵世里，為自己留下一片純靜的心靈空間，不管是潮起潮落，也不管是陰晴圓缺，你都可以免去浮躁，義無(wú)反顧，勇往直前，輕松自如地走好人生路上的每一步3. 花一些時(shí)間，總會(huì)看清一些事。努力過(guò)后，才知道許多事情，堅(jiān)持堅(jiān)持，就過(guò)來(lái)了。只有你自己才能把歲月描畫(huà)成一幅難以忘懷的人生畫(huà)卷。歲月是有情的，假如你奉獻(xiàn)給她的是一些色彩，它奉獻(xiàn)給你的也是一些色彩。有時(shí)候覺(jué)得自己像個(gè)神經(jīng)病。1. 若不給自己設(shè)限，則人生中就沒(méi)有限制你發(fā)揮的藩籬。98. It is impossible to say simply for the fun and exercise: as soon as the question of prestige arises, as soonas you feel that you and some larger unit will be disgraced if you lose, the most savage bative instinctsare around.：一旦有了問(wèn)題，一旦你覺(jué)得你輸了你和你所屬團(tuán)體會(huì)有失體面時(shí)，你最野蠻的好斗本能就會(huì)被激發(fā)出來(lái)。96. I find young people exciting. They have an air of freedom, and they have not a dreary mitment tomean ambitions or love fort. They are not anxious social climbers, and they have no devotion to materialthings.。94. It is true that during their explorations they often faced difficulties and dangers of the most perilousnature, equipped in a manner which would make a modern climber shudder at the thought, but they did notgo out of their way to court such excitement.，他們?cè)谔诫U(xiǎn)中遇到了極具威脅性的困難和危險(xiǎn)，而他們的裝備會(huì)讓一個(gè)現(xiàn)代登山者想一想都會(huì)渾身顫栗。91. Arid regions in the southwestern United States have bee increasingly inviting playgrounds for thegrowing number of recreation seekers who own vehicles such as motorcycles or powered trail bikes andindulge in hillclimbing contests or in caving new trails in the desert.，對(duì)越來(lái)越多擁有摩托車(chē)或越野單車(chē)類(lèi)車(chē)輛的，喜歡放縱于爬坡比賽或開(kāi)辟新的沙漠通道的尋歡作樂(lè)者具有不斷增長(zhǎng)的吸引力。87. Three years of research at an abandoned coal mine in Argonne, Illinois, have resulted in findings thatscientists believe can help reclaim thousands of mine disposal sites that scar the coalrich regions of theUnited States. Angonne 市的一個(gè)廢棄煤礦的三年研究取得了成果，科學(xué)家們相信這些成果可以幫助改造把美國(guó)產(chǎn)煤區(qū)弄得傷痕累累的數(shù)千個(gè)舊煤場(chǎng)。85. The sloth pays such little attention to its personal hygiene that green algae grow on its coarse hair andmunities of a parasitic moth live in the depths of its coat producing caterpillars which graze on its mouldyhair. Its muscles are such that it is quits incapable of moving at a speed of over a kilometer an hour even overthe shortest distances and the swiftest movement it can make is a sweep of its hooked arm.，以至于它粗糙的毛發(fā)上生出綠苔，成群的寄生蛾生長(zhǎng)在它的皮毛深處，變成毛毛蟲(chóng)，并以它的臟毛為食。81. Television the most pervasive and persuasive of modern technologies, marked by rapid change and growth, is moving into a new era, an era of extraordinary sophistication and versatility, which promises to reshape our lives and our world.，這項(xiàng)從迅速變化和成長(zhǎng)為標(biāo)志的最普及和最有影響力的現(xiàn)代技術(shù)，正在步入一個(gè)新時(shí)代，一個(gè)極為成熟和多樣化的時(shí)代，這將重塑我們的生活和世界。77. Poodles were once used as retrievers in duck hunting, but the American Kennel Club does not consider them sporting dogs because they are now primarily kept as pets.，但是美國(guó) Kennel Club 卻不承認(rèn)它們?yōu)楂C犬，因?yàn)樗鼈?