【文章內(nèi)容簡介】 er bad habit. As soon as he opens the gate from the outside, he es into the garden and waits until the gate shuts. Then he sits and barks until someone lets him out. After this he immediately lets himself in and begins barking again. Yesterday my husband removed the gate and Rex got so annoyed we have not seen him since. Lesson60 The future 卜算未來At a village fair, I decided to visit a fortuneteller called Madam Bellinsky. I went into her tent and she told me to sit down. After I had given her some money, she looked into a crystal ball and said: 39。A relation of yours is ing to see you. She will be arriving this evening and intends to stay for a few days. The moment you leave this tent, you will get a big surprise. A woman you know well will rush towards you. She will speak to you and then she will lead you away from this place. That is all.39。 As soon as I went outside, I forgot all about Madam Bellinsky because my wife hurried towards me. 39。Where have you been hiding ?39。 she asked impatiently. 39。Your sister will be here in less than an hour and we must be at the station to meet her. We are late already.39。 As she walked away, I followed her out of the fair. Lesson61 Trouble with the Hubble 哈勃望遠鏡的困境In future, astronauts will be required to descend from a spaceship while it is still in space and to return to it. The ability to do this will be necessary in future flights to distant planets. Scientists are now trying to discover if this is possible. The spaceship Astra which left the earth a short time ago, will be travelling three hundred miles into space. At a certain point, the Astra will stop for a short time and an astronaut will attempt to leave the stationary spaceship and then return to it. We shall not know whether the experiment has been successful until we have received a radio message. The first message is expected to arrive at 7 o39。clock this evening. By that time, the Astra will have been flying through space for seventeen hours and will have circled the earth a great many times. When the first radio messages have been received, the results of the trip will be announced immediately.Lesson62 After the fire 大火之后Firemen had been fighting the forest fire for nearly three weeks before they could get it under control. A short time before, great trees had covered the countryside for miles around. Now, smoke still rose up from the warm青蛙養(yǎng)殖可行性報告一、項目背景　　青蛙又名田雞，其肉質(zhì)細嫩、脂肪少、糖分低、蛋白質(zhì)含量高，具有清熱解毒、消腫止痛的功效。同時有農(nóng)田衛(wèi)士之稱，屬于國家二級保護動物。隨著生態(tài)農(nóng)業(yè)和綠色食品業(yè)的發(fā)展，人們對蛙類產(chǎn)品需求量越來越大。由于野生蛙銷路好，價格高，導(dǎo)致有人大量捕捉、收購野生蛙類，加工、出口野生蛙類制品等，加上大量施用巨毒農(nóng)藥，造成許多地方野外蛙數(shù)量急劇減少，嚴重影響了生態(tài)系統(tǒng)平衡?！　《?、市場前景　　為了更好地保護野生青蛙資源，維持生態(tài)平衡和良好的農(nóng)田環(huán)境，國家及很多的地方都出臺了保護野生青蛙的法律、法規(guī)及規(guī)定，并制定了對非法獵捕野生青蛙的處罰條款，增加了禁止非法捕殺、買賣野生青蛙條款。但由于人們對野生青蛙的一味追求，吃青蛙的人越來越多，就四川成都市場而言，每天要消化6噸以上的青蛙，市場需求量很大，受這種利益的驅(qū)使下，各地捕殺、出售青蛙的現(xiàn)象仍屢禁不止，每天有大量的野生青蛙被捕殺，嚴重破壞了生態(tài)平衡?！　榱思瓤蓾M足人們生活的需要，又可以保護野生青蛙資源，人們開始著手人工繁殖、養(yǎng)殖野生青蛙。但現(xiàn)有的野生青蛙繁育養(yǎng)殖技術(shù)仍然存在著單位面積產(chǎn)量不高、養(yǎng)殖成商品蛙周期長、養(yǎng)殖成本高、不易大面積推廣、難形成規(guī)模養(yǎng)殖等問題，造成人工養(yǎng)殖困難，野生青蛙資源仍然受到嚴重的破壞?！　榇?，四川省綿竹市宏遠養(yǎng)殖廠提出了一種養(yǎng)殖成本低，效益高，周期短，易大面積推廣的人工養(yǎng)殖野生青蛙技術(shù)，這樣不僅可以滿足了市場的需要，又改善了人們生活水平，保護了野生青蛙資源，維持生態(tài)平衡環(huán)境。市場前景廣闊，經(jīng)濟效益、社會效益和生態(tài)效益顯著。　　三、技術(shù)優(yōu)勢　　技術(shù)非常全面，包括選種蛙選擇、產(chǎn)卵、乳化、蝌蚪飼養(yǎng)、幼蛙馴養(yǎng)，商品蛙養(yǎng)殖等全過程。　　配套技術(shù)完善，通過我們十多年養(yǎng)殖研究，摸索了一整套的昆蟲規(guī)模性養(yǎng)殖技術(shù)，包括蠅蛆、蚯蚓、黃粉蟲等養(yǎng)殖新技術(shù)，解決青蛙的大量餌料，為成功養(yǎng)蛙營造了優(yōu)越條件?！　『赀h養(yǎng)殖廠在人工養(yǎng)殖野生青蛙上做好很大程度上的配套設(shè)施研究，怎樣合理修建生態(tài)蛙池、配套水源處理系統(tǒng)，完善整個養(yǎng)殖配套設(shè)施，起到了用投資少，省時省力。養(yǎng)殖周期短，野生青蛙有冬眠期，使野生青蛙的生長周期長，該技術(shù)有效地避開了野生青蛙的冬眠期，從而使野生青蛙的養(yǎng)殖周期大大縮短，從產(chǎn)卵到商品蛙周期僅6個月?！　「淖儌鹘y(tǒng)養(yǎng)殖模式，節(jié)約土地資源，有效地提高了單位養(yǎng)殖面積的產(chǎn)量，每平方米可養(yǎng)殖野生青蛙50－100只，產(chǎn)量6－15斤.　　四、效益分析　　資金需求及用途　　計劃生產(chǎn)規(guī)模100畝，按年產(chǎn)商品蛙300萬只計算，總投資200萬元：　　固定資金150萬元，包括修建種蛙池、繁育池、成蛙池、餌料生產(chǎn)基地等，流動資需要50萬元?！　∩a(chǎn)成本。　　經(jīng)濟效益?！　、工廠化集約養(yǎng)殖，按年產(chǎn)商品蛙300萬只計算，產(chǎn)商品蛙150噸：　　按市場價每公斤30元計算，銷售收入=3萬元/噸150噸=450萬元，　　純利=銷售收入450萬元－300萬只=300萬元?！　∽⒚鳎?、人工費用等?！　、同時，發(fā)展周邊的農(nóng)戶稻田養(yǎng)殖青蛙，按每公斤20元的價格回收：　　每戶平均1畝，放養(yǎng)3000只，每畝產(chǎn)青蛙150公斤，農(nóng)戶每畝銷售收入=150公斤20元/公斤=3000元，農(nóng)戶每畝純收入=銷售收入3000元－3000只900元=2100元；　　同時公司回收農(nóng)戶商品蛙按市場價銷售，每畝可獲得的市場差利=150公斤10元/公斤=1500元?！　⌒б嬷笜?biāo)。投資回收期為1年?！　∩鐣?、生態(tài)效益?！　】梢杂行У乜刂迫斯さ拇罅坎蹲角嗤埽瑥亩Ｗo野生青蛙資源，維持生態(tài)平衡和良好的農(nóng)田環(huán)境，提高農(nóng)產(chǎn)品質(zhì)量，同時可為人們提供集食、補、藥于一體的野生蛙類產(chǎn)品，滿足市場需求，改善了人們生活水平?！　∫?guī)模性發(fā)展農(nóng)戶稻田養(yǎng)殖野生青蛙，降低農(nóng)田用藥，提高農(nóng)產(chǎn)品質(zhì)量，這樣即保護了農(nóng)田生態(tài)資源，又增加了農(nóng)村農(nóng)民的收入，帶領(lǐng)農(nóng)民奔小康。　　五、風(fēng)險　　技術(shù)風(fēng)險　　我們從1995年開始從事野生青蛙繁育、養(yǎng)殖技術(shù)的研究，總結(jié)出了一套完整的成功養(yǎng)殖模式，養(yǎng)殖成功率99%以上，養(yǎng)殖風(fēng)險基本為零?！　∩a(chǎn)風(fēng)險　　運用成功的技術(shù)，養(yǎng)殖中不會有大批量的死亡現(xiàn)象，就算有少量死亡，不會受到嚴重的經(jīng)濟損失。　　市場風(fēng)險　　由于野生青蛙屬于國家二級保護動物，養(yǎng)殖是需要在當(dāng)?shù)亓謽I(yè)局辦證后方可上市銷售，不會有一哄而上的養(yǎng)殖熱潮，不會形成市場的價格戰(zhàn)，跟傳統(tǒng)養(yǎng)殖具有實質(zhì)的差異，沒有市場風(fēng)險?！　≌唢L(fēng)險　　野生青蛙的人工繁育、養(yǎng)殖有利于環(huán)境保護和維持生態(tài)平衡，國家將鼓勵支持個人或企業(yè)人工馴養(yǎng)野生動物，但必須具備野生青蛙繁育養(yǎng)殖的技術(shù)能力，應(yīng)到當(dāng)?shù)叵嚓P(guān)部門辦理生產(chǎn)許可證。the difference between Indian music and jazz!Lesson43 Over the South Pole 飛越南極In 1929, three years after his flight over the North Pole, the American explorer, R. E. Byrd, successfully flew over the South Pole for the first time. Though, at first, Byrd and his men were able to take a great many photographs of the mountains that lay below, they soon ran into serious trouble. At one point, it seemed certain that their plane would crash. It could only get over the mountains if it rose to 10,000 feet. Byrd at once ordered his men to throw out two heavy food sacks. The plane was then able to rise and it cleared the mountains by 400 feet. Byrd now knew that he would be able to reach the South Pole which was 300 miles away, for there were no more mountains in sight. The aircraft was able to fly over the endless white plains without difficulty. Lesson44 Through the forest 穿過森林Mrs Anne Sterling did not think of the risk she was taking when she ran through a forest after two men. They had rushed up to her while she was having a piic at the edge of a forest with her children and tried to steal her handbag. In the struggle, the strap broke and, with the bag in their possession, both men started running through the trees. Mrs Sterling got so angry that she ran after them. She was soon out of breath, but she continued to run. When she caught up with them, she saw that they had sat down and were going through the contents of the bag, so she ran straight at them. The men got such a fright that they dropped the bag and ran away. 39。The strap needs mending,39。 said Mrs Sterling later, 39。but they did not steal anything.39。Lesson4