1、hour, he had great difficulty in controlling the car because a tyre burst during the first run. After his attempt, Campbell was disappointed to learn that his average speed had been 299 miles per hour. However, a few days later, he was told that a mistake had been made. His average speed had been 30
2、1 miles per hour. Since that time, racing drivers have reached speeds of over 400 miles an hour. Following his fathers footsteps many years later, Sir Malcolms son, Donald, also set up a world record. Like his father, he was driving a car called Bluebird.Lesson73 The record-holder 纪录保持者Little boys w
3、ho play truant from school are unimaginative. A quiet days fishing, or eight hours in a cinema seeing the same film over and over again, is usually as far as they get. They have all been put to shame by a boy who, while playing truant, travelled 1600 miles. He hitch- hiked to Dover and, towards even
4、ing, went into a boat to find somewhere to sleep. When he woke up next morning, he discovered that the boat had, in the meantime, travelled to Calais. No one noticed the boy as he crept off. From there, he hitch-hiked to Paris in a lorry. The driver gave him a few biscuits and a cup of coffee and le
5、ft him just outside the city. The next car the boy stopped did not take him into the centre of Paris as he hoped it would, but to Perpignan on the French-Spanish border. There he was picked up by a policeman and sent back to England by the local authorities. He has surely set up a record for the tho
6、usands of boys who dream of evading school.Lesson74 Out of the limelight 舞台之外An ancient bus stopped by a dry river bed and a party of famous actors and actresses got off. Dressed in dark glasses and old clothes, they had taken special precautions so that no one should recognize them. But as they soo
7、n discovered, disguises can sometimes be too perfect.This is a wonderful place for a picnic, said Gloria Gleam. It couldnt be better, Gloria, Brinksley Meers agreed. No newspaper men, no film fans! Why dont we come more often ? Meanwhile, two other actors, Rockwall Slinger and Merlin Greeves, had ca
8、rried two large food baskets to a shady spot under some trees. When they had all made themselves comfortable, a stranger appeared. He looked very angry. Now you gut out of here, all of you! he shouted: Im sheriff here. Do you see that notice ? It says No Camping-in case you cant read ! Look, sheriff
9、, said Rockwall, dont be too hard on us. Im Rockwall Slinger and this is Merlin Greeves. Oh, is it ? said the sheriff with a sneer. Well, Im Brinksley Meers, and my other name is Gloria Gleam. Now you get out of here fast !lesson75 SOS 呼救信号When a light passenger plane flew off course some time ago,
10、it crashed in the mountains and its pilot was killed. The only passengers, a young woman and her two baby daughters, were unhurt. It was the middle of winter. Snow lay thick on the ground. The woman knew that the nearest village was miles away. When it grew dark. she turned a suitcase into a bed and
11、 put the children inside it, covering them with all the clothes she could find. During the night, it got terribly cold. The woman kept as near as she could to the children and even tried to get into the case herself, but it was too small. Early ,next morning she heard planes passing overhead and won
12、dered how she could send a signal. Then she had an idea. She stamped out the letters SOS in the snow. Fortunately, a pilot saw the signal and sent a message by radio to the nearest town. It was not long before a helicopter arrived on the scene to rescue the survivors of the plane crash.Lesson76 Apri
13、l Fools Day 愚人节To end our special news bulletin, said the voice of the television announcer, we are taking you to the macaroni fields of Calabria. Macaroni has been grown in this area for over six hundred years. Two of the leading growers, Giuseppe Moldova and Ricardo Brabante, tell me that they hav
14、e been expecting a splendid crop this year and harvesting has begun earlier than usual. Here you can see two workers who, between them, have just finished cutting three cart-loads of golden brownmacaroni stalks. The whole village has been working day and night gathering and threshing this years crop
15、 before the September rains. On the right, you can see Mrs Brabante herself. She has been helping her husband for thirty years now. Mrs Brabante is talking to the manager of the local factory where the crop is processed. This last scene shows you what will happen at the end of the harvest : the famo
16、us Calabrian macaroni-eating competition ! Signor Fratelli, the present champion, has won it every year since 1961. And that ends our special bulletin for today, Thursday, April 1st. We are now returning you to the studio.Lesson77 A successful operation 一例成功的手术The mummy of an Egyptian woman who died
17、 in 800 B.C. has just had an operation. The mummy is that of Shepenmut who was once a singer in the Temple of Thebes. As there were strange marks on the X-ray plates taken of the mummy, doctors have been trying to find out whether the woman died of a rare disease. The only way to do this was to oper
18、ate. The operation, which lasted for over four hours, proved to be very difficult because of the hard resin which covered the skin. The doctors removed a section of the mummy and sent it to a laboratory. They also found something which the X-ray of the god Duamutef. This god which has the head of a
19、cow was normally placedinside a mummy. The doctors have not yet decided how the woman died. They feared that the mummy would fall to pieces when they cut it open, but fortunately this has not happened. The mummy successfully survived the operation. Lesson78 The last one? 最后一枝吗？After reading an artic
20、le entitled Cigarette Smoking and Your Health I lit a cigarette to calm my nerves. I smoked with concentration and pleasure as I was sure that this would be my last cigarette. For a whole week I did not smoke at all and during this time, my wife suffered terribly. I had all the usual symptoms of som
21、eone giving up smoking: a bad temper and an enormous appetite. My friends kept on offering me cigarettes and cigars. They made no effort to hide their amusement whenever I produced a packet of sweets from my pocket. After seven days of this I went to a party. Everybody around me was smoking and I fe
22、lt extremely uncomfortable. When my old friend Brian urged me to accept a cigarette, it was more than I could bear. I took one guiltily, lit it and smoked with satisfaction. My wife was delighted that things had returned to normal once more. Anyway, as Brian pointed out, it is the easiest thing in t
23、he world to give up smoking. He himself has done it lots of times! Lesson79 By air 乘飞机I used to travel by air a great deal when I was a boy. My parents, used to live in South America and I used to fly there from Europe in the holidays. An airhostess would take charge of me and I never had an unpleas
24、ant experience. I am used to travelling by air and only on one occasion have I ever felt frightened. After taking off, we were flying low over the city and slowly陕西湑水生物开发有限公司人工驯养繁殖大鲵经营利用可行性研究报告陕西省水产研究所二00九年六月十一日hour, he had great difficulty in controlling the car because a tyre burst during the firs
25、t run. After his attempt, Campbell was disappointed to learn that his average speed had been 299 miles per hour. However, a few days later, he was told that a mistake had been made. His average speed had been 301 miles per hour. Since that time, racing drivers have reached speeds of over 400 miles a
26、n hour. Following his fathers footsteps many years later, Sir Malcolms son, Donald, also set up a world record. Like his father, he was driving a car called Bluebird.Lesson73 The record-holder 纪录保持者Little boys who play truant from school are unimaginative. A quiet days fishing, or eight hours in a c
27、inema seeing the same film over and over again, is usually as far as they get. They have all been put to shame by a boy who, while playing truant, travelled 1600 miles. He hitch- hiked to Dover and, towards evening, went into a boat to find somewhere to sleep. When he woke up next morning, he discov
28、ered that the boat had, in the meantime, travelled to Calais. No one noticed the boy as he crept off. From there, he hitch-hiked to Paris in a lorry. The driver gave him a few biscuits and a cup of coffee and left him just outside the city. The next car the boy stopped did not take him into the cent
29、re of Paris as he hoped it would, but to Perpignan on the French-Spanish border. There he was picked up by a policeman and sent back to England by the local authorities. He has surely set up a record for the thousands of boys who dream of evading school.Lesson74 Out of the limelight 舞台之外An ancient b
30、us stopped by a dry river bed and a party of famous actors and actresses got off. Dressed in dark glasses and old clothes, they had taken special precautions so that no one should recognize them. But as they soon discovered, disguises can sometimes be too perfect.This is a wonderful place for a picn
31、ic, said Gloria Gleam. It couldnt be better, Gloria, Brinksley Meers agreed. No newspaper men, no film fans! Why dont we come more often ? Meanwhile, two other actors, Rockwall Slinger and Merlin Greeves, had carried two large food baskets to a shady spot under some trees. When they had all made the
32、mselves comfortable, a stranger appeared. He looked very angry. Now you gut out of here, all of you! he shouted: Im sheriff here. Do you see that notice ? It says No Camping-in case you cant read ! Look, sheriff, said Rockwall, dont be too hard on us. Im Rockwall Slinger and this is Merlin Greeves.
33、Oh, is it ? said the sheriff with a sneer. Well, Im Brinksley Meers, and my other name is Gloria Gleam. Now you get out of here fast !lesson75 SOS 呼救信号When a light passenger plane flew off course some time ago, it crashed in the mountains and its pilot was killed. The only passengers, a young woman
34、and her two baby daughters, were unhurt. It was the middle of winter. Snow lay thick on the ground. The woman knew that the nearest village was miles away. When it grew dark. she turned a suitcase into a bed and put the children inside it, covering them with all the clothes she could find. During th
35、e night, it got terribly cold. The woman kept as near as she could to the children and even tried to get into the case herself, but it was too small. Early ,next morning she heard planes passing overhead and wondered how she could send a signal. Then she had an idea. She stamped out the letters SOS
36、in the snow. Fortunately, a pilot saw the signal and sent a message by radio to the nearest town. It was not long before a helicopter arrived on the scene to rescue the survivors of the plane crash.Lesson76 April Fools Day 愚人节To end our special news bulletin, said the voice of the television announc
37、er, we are taking you to the macaroni fields of Calabria. Macaroni has been grown in this area for over six hundred years. Two of the leading growers, Giuseppe Moldova and Ricardo Brabante, tell me that they have been expecting a splendid crop this year and harvesting has begun earlier than usual. H
38、ere you can see two workers who, between them, have just finished cutting three cart-loads of golden brownmacaroni stalks. The whole village has been working day and night gathering and threshing this years crop before the September rains. On the right, you can see Mrs Brabante herself. She has been
39、 helping her husband for thirty years now. Mrs Brabante is talking to the manager of the local factory where the crop is processed. This last scene shows you what will happen at the end of the harvest : the famous Calabrian macaroni-eating competition ! Signor Fratelli, the present champion, has won
40、 it every year since 1961. And that ends our special bulletin for today, Thursday, April 1st. We are now returning you to the studio.Lesson77 A successful operation 一例成功的手术The mummy of an Egyptian woman who died in 800 B.C. has just had an operation. The mummy is that of Shepenmut who was once a sin
41、ger in the Temple of Thebes. As there were strange marks on the X-ray plates taken of the mummy, doctors have been trying to find out whether the woman died of a rare disease. The only way to do this was to operate. The operation, which lasted for over four hours, proved to be very difficult because
42、 of the hard resin which covered the skin. The doctors removed a section of the mummy and sent it to a laboratory. They also found something which the X-ray of the god Duamutef. This god which has the head of a cow was normally placedinside a mummy. The doctors have not yet decided how the woman die
43、d. They feared that the mummy would fall to pieces when they cut it open, but fortunately this has not happened. The mummy successfully survived the operation. Lesson78 The last one? 最后一枝吗？After reading an article entitled Cigarette Smoking and Your Health I lit a cigarette to calm my nerves. I smok
44、ed with concentration and pleasure as I was sure that this would be my last cigarette. For a whole week I did not smoke at all and during this time, my wife suffered terribly. I had all the usual symptoms of someone giving up smoking: a bad temper and an enormous appetite. My friends kept on offerin
45、g me cigarettes and cigars. They made no effort to hide their amusement whenever I produced a packet of sweets from my pocket. After seven days of this I went to a party. Everybody around me was smoking and I felt extremely uncomfortable. When my old friend Brian urged me to accept a cigarette, it w
46、as more than I could bear. I took one guiltily, lit it and smoked with satisfaction. My wife was delighted that things had returned to normal once more. Anyway, as Brian pointed out, it is the easiest thing in the world to give up smoking. He himself has done it lots of times! Lesson79 By air 乘飞机I u
47、sed to travel by air a great deal when I was a boy. My parents, used to live in South America and I used to fly there from Europe in the holidays. An airhostess would take charge of me and I never had an unpleasant experience. I am used to travelling by air and only on one occasion have I ever felt
48、frightened. After taking off, we were flying low over the city and slowly编写人员：杜汉斌 杨元昊王绿洲戴铭恒目 录1 前言11.1 背景11.2 法律依据12 大鲵的生物学22.1 大鲵的分类和分布22.2 大鲵的形态特征32.2.1成体32.2.2卵32.3生活习性42.4栖息环境52.5食性62.6年龄和生长72.7生殖72.7.1雌雄鉴别72.7.2雌雄性比82.7.3性腺发育及年周期82.7.4怀卵量与体重的关系92.7.5繁殖行为93 大鲵的保护现状103.1就地保护（in-situ conservation）113.2迁地保护（ex-situ conservation）123.2.1 全人工繁育模式123.2.2 原生态繁育模式143.2.3 仿生态繁育模式163.3 大鲵的增殖放流现状184 陕西湑水生物开发有限公司简介194.1 公司基本情况194.2管理与技术情况214.1.1 主要管理及技术人员214.1.2 主要技术研究人员225 公司大鲵人工驯养繁殖概况225.1 公司的亲鲵来源235.2 公司的资金来源235.3 大鲵人工繁育技术工艺流程（图2）245.4 公司历年来人工繁殖子代大鲵情况255.5“公司+科研+基地+农
