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1、(1)With only about 1, 000 pandas left in the world, China is desperately trying to clone(克隆 )the animal and save the endangered species(物种 ). That s a move similar to what a Texas A & MUniversity researchers have been undertaking for the past five years in a project called“ Noah sArk ” .Noah sAr

2、k is aimed at collecting eggs, embryos(胚胎 ), semen and DNA of endangered animals and storing them in liquid nitrogen. If certain species should become extinct, Dr. Duane Kraemer, a professor in Texas A & M sColleg e of Veterinary Medicine, says there would be enough of the basic building blocks

3、to reintroduce the species in the future.It is estimated that as many as 2, 000 species of mammals, birds reptiles will become extinct in over 100 years. The panda, native only to China, is in danger of becoming extinct in the next 25 years.This week, Chinese scientists said they grew an embryo by i

4、ntroducing cells from a dead female panda into the egg cells of a Japanese white rabbit. They are now trying to implant the embryo into a host animal.The entire procedure could take from three to five years to complete.“ Thenuclear transfer( 核子移植 ) of one species to another is not easy, and the lack

5、 ofavailable(capable of being used) panda eggs could be a major problem,” Kraemer believes.will probably have to do several hundred transfers to result in one pregnancy (having a baby). Ittakes a long time and it s difficult, but this could be groundbreaking science if it works. They arecertainly no

6、t putting any live pandasat risk, so it is worth the effort,” adds Kraemer, who is one ofthe leaders of the Project at Texas A& M, the first-ever attempt at cloning a dog.“ They are trying to do something that s never been done, and this is very similar to our workin Noah s Ark. We re both tryin

7、g to save animals that face extinction. I certainly appreciate theireffort and there s a lot we can learn from what they are attempting to do. It s a researchmuch needed.”1. The aim of“ Noah s Ark ” project is to _.A. make efforts to clone the endangered pandasB. save endangered animals from dyingou

8、tC. collect DNA of endangered animals to studyD. transfer the nuclear of one animal toanother2. According to Professor Kraemer, the major problem in cloning pandas would be the lack of_.A. available panda eggsB. host animalsC. qualified researchersD. enough money3. The best title for the passage may

9、 be _.A. China s Success in Pandas CloningB. The First Cloned Panda in theWorldC. Exploringthe Possibility to Clone PandasD. China the Native Place of PandasForever4. From the passage we know that _.A. Kraemer and his team have succeeded in cloning a dogB. scientists try to implant a p anda s egg in

10、to a rabbitC. Kraemer will work with Chinese scientists in clone researchesD. about two thousand of species will probably die out in a century(2)Want a glance of the future of health care? Take a look at the way the various networks ofpeople about patient care are being connected to one another, and

11、 how this new connectivity isbeing exploited to deliver medicine to the patient no matter where he or she may be.Online doctors offeringadvice based on normal symptoms( 症状 ) are the most obviousexample. Increasingly, however, remote diagnosis( 远程诊断 ) will be based on real physiologicaldata(生理数据 ) fr

12、om the actual patient. A group from the University of Kentucky has shown thatby using personal data assistance plus a mobile phone, it is perfectly practical to send a patientimportant signs over the telephone. With this kind of equipment, the cry asking whether there wasa doctor in the house could

13、well be a thing of the past.Other medical technology groups are working on applying telemedicine to rural(countryside)care. And at least one team wants to use telemedicine as a tool for disaster need especially afterearthquakes. On the whole, the trend is towards providingglobal access to medical da

14、ta andexperts opinions.But there is one problem. Bandwidth(宽带 ) is the limiting factor for sending complex(复杂 s的) medical pictures around the world CT photos being one of the biggest bandwidth users.Communication satellites may be able to deal with the short-term needs during disasters such as earth

15、quakes or wars. But medicine is looking towards both the second-generation Internet and third-generation mobile phones for the future of remote medical service.Doctors have met to discuss computer-based tools for medical diagnosis, training and telemedicine. With the falling price of broadband commu

16、nications, the new technologies shouldstart a new time when telemedicine and the sharing of medical information, experts opinion diagnosis are common.1.The writer chiefly talks about _.A. the use of telemedicineB. the on-lined doctorsC. medical care and treatmentD. communication improvement2.The bas

17、is of remote diagnosis will be _.A. personal data assistanceB. some words of a patientC. real physiological informationD. medical pictures from the Internet3.Which of the following statements is true according to the text ？A. Patients don t need doctors in hospitals any more.B. It is impossible to s

18、end a patientsigns over thestelephone.C. Many teams use telemedicine dealing with disasters now.D. Broadband communications willbecome cheaper in the future.4. The “ problem ” in the fourth paragraph refers to the fact that _.A. bandwidth isn t big enough to send complex medical picturesB. the secon

19、d-generation of Internet has not become popular yetC. communication satellites can only deal with short-term needsD. there is not enough equipment for spreading the medical care(3)Scientists are uncoveringthe secrets oftwoport citieslostunder the waters of theMediterranean Sea, a researcher said yes

20、terday.Herakleion and Menouthis were rich and proud cities until something reduced them to rubble(碎石 ) and buried them in the mud beneath 30 feet of sea water, French underwater explorer Franck Goddio said at the American Geophysical Union conference.“ Thisis a mystery that is ongoing, ”said Goddio,

21、 a founder of the European Institute of Marine Archeology, a Paris-based underwater research organization backed by the wealthy HiltiThe destruction of the twin port cities has haunted Goddio ever since he happened upon thesite about 15 miles from Alexandria while exploring sunken ships from Napoleo

22、n s fleet.Goddio and his group of expert divers, marine archeologists( 海洋考古学家 ) and others, are using high powered vacuums, satellite navigation systems and sophisticated sonar(声纳 ) to excavate(挖掘 ) the sunken cities from underneath a carpet of silt about one meter (three feet) high.Walls of shops,

23、remains of streets and gold artifacts have been found and recovered.Some experts believe that the port cities were destroyed by a series of massive earthquakes, much like the quakes scientists believe felled Troy( 特洛伊城 ), Jericho and other ancient cities. The uniform direction of the collapsed colum

24、ns and walls suggest an earthquake, Goddio said, but no fault lines have been found nearby.Other researchers believe a massive wave, caused by either an offshore earthquake or adistant underwater landslide, could explain the catastrophe. Still others think rising seas and a shiftin the Nile River ou

25、tlet doomed the cities.“ The argument, as you can see, continues,” Goddio said.1. The reason why the two port cities disappeared under the waters of Mediterranean Sea is that_.A. the two port cities were destroyed by huge earthquakesB. the disappearance of the two port cities was caused by underwate

26、r landslideC. rising seas and a shift in the Nile River outlet doomed the cities2. From the story we can draw a conclusion that _.A. the two port cities were famous for their wealth and the mysteryB. the two cities belonged to FranceC. some mysterious creatures from other planets destroyed the two c

27、itiesD. the American Geophysical Union conference was once held in one of the two cities3. This article is probably from _.A. a scientific magazineB. a report to the governmentC. a school text bookD. a scientific report in a newspaper(4)Motherhood may make women smarter and may help prevent dementia

28、( 痴呆 ) in old age by bathing the brain in protective hormones( 荷尔蒙 ) , U.S. reseachers reported on Thursday.Tests on rats show that those who raise two or more litters of pups do considerably better intests of memory and skills than rats who have no babies, and their brains show changes that suggest

29、 they may be protected against diseases such as Alzheimer s(早老痴呆症 ). University of Richmond psychology professor Craig Kinsley believes his findings will translate into humans.“Our research shows that the hormones ofpregnancy( 怀孕 ) are protectingthe brain,includingestrogen(雌激素 ), which we know has m

30、any neuroprotective (保护神经的 ) effects,”Kinsley said.“It s rat data but humans are mammals just like these animals are mammals,”he added in atelephone interview. “They go through pregnancy and hormonal changes. ”Kinsley said he hoped public health officials and researchers will look to see if having h

31、adchildren protects a woman from Alzheimer s and other forms of age-related brain decline.“When people think about pregnancy, they think about what happens to babies and the motherfrom the neck down,”said Kinsley, who presented his findingsto the annual meeting of theSociety of Neuroscience in Orlan

32、do, Florida.“They do not realize that hormones are washing on the brain. If you look at female animalswho have never gone through pregnancy, they act differentlytoward young. But if she goesthrough pregnancy, she will sacrifice her life for her infant that is a great change in her behaviorthat showe

33、d in genetic alterations( 改变 ) to the brain. ”1. How do scientists know “Motherhood may make women smarter ”?A. Some researchers have told them.B. Many women say so.C. They knowitby experimentingon rats.D.Theyknowitthrough theirownexperience.2. What does the phrase “litters of pups ”mean in the seco

34、nd paragraph?A. Baby rats.B. Animals.C. Old rats.D. Grown-up rats.3. What can protect the brain of a woman according to the passage?A. Estrogen.B. The hormones of pregnancy.C. More exercise.D. Taking care of children.4. “It s rat data but humans are mammals just like these animals are mammals.”What

35、does thesentence suggest?A. The experiments on the rats have nothing to do with humans.B. The experiments on the rats are very important for animals.C. The experiments on the rats are much the same on humans.D. The experiments on the rats are much the same on other animals.5. Which title is the best

36、 for this passage?A. Do You Want to Be Smarter?B. Motherhood Makes Women SmarterC. Mysterious HormonesD. An Important Study(5)To get cash out in the 21st century, you won t need a bank card, a PIN(个人识别编号 ) or even have to move a finger. You will simply have to look the cash machine straight in the e

37、ye,declares National Cash Registers, a multinational company that makes automated teller machines, or ATMs. NCR has shown its first example machine that is believed to be the future of banking. Instead of asking you for your PIN on a screen, the Super Teller-Stella for short, asks you orallythrough

38、a loudspeaker to look straight ahead whilean infrared camera turns to your head, thenyour eye, and finally takes an infraredphotographof your iris( 虹膜 ). For identification( 识别 )purposes, an iris picture is better than a fingerprint,with around 256 noticeable characteristicscompared with 40 for fing

39、erprints. This means that the chances of someone else being recognizedin your place is about 1 in 1020. Once you ve been identified, Stella greets you by name and says:“ Wouldyou like cash or a statement?An” infrared port allows the machine to send a bankstatement straight to your pocket computer.1.

40、 What does this passage mainly talk about? A. A new medical instrumentB. A new type of talking machine.C. A new type of cash machine.D. National Cash Register2. What is this new machine called?A. StellaB. ATMC. PIND. NCR3. When you want to get cash out in the 21st century, you will _.A. need a bank

41、cardB. have to put in your PINC. move your fingerD. just look directly at the teller machine(6)Weather changes when the temperature and the amount of water in the atmosphere change. We can see and feel water coming from the atmosphere when we have rain. But the water must somehow get back to the atm

42、osphere. Meteorologists call this the water cycle.There are many stages in the water cycle. Rain falls when water vapour in clouds condenses(凝结 ). Drops of water form and fall to the ground. The water soaks into the ground and feeds streams and rivers. A lot of rain falls into the sea. The heat of t

43、he sun evaporates some of the water in the ground and in the rivers, lakes, and the sea. It changes the liquid water into water vapour. The vapour rises onto the air. Water vapour is normally invisible. On a very damp or humid day, however, you can sometimes see water vapour rising from a puddle( 水坑

44、 ) or pond in a mist( 薄雾 ) above the water. Water vapour also gets into the air from living things. Trees and other plants take in water through their roots and give off water vapour from their leaves. People and land animals drink water and breathe out water vapour. In all these ways the water retu

45、rns to the air. There it gathers to form clouds and condenses to form rain. The rain falls to earth, and the cycle starts again. It continues even if snow or hail( 冰雹 ) fall instead because both eventually melt to form water. The amount of water vapour in the air depends on the temperature. The air

46、is more moist( 潮湿 ) in the tropics( 热带 ) than in the cold polar regions.1.What is the main idea of the passage?A. Water cycle.B. Water vapour.C. How rain forms.D. Water, vapour, rain.2.How many ways of the water returning to the air are discussed in the text?A. Two.B. Three. C. Four.D. Five.3.Whethe

47、r water vapour can be seen or not depends on _.A. how much water is evaporatedB. how good your eyes areC. in which way water is evaporatedD. climate or weather4. From the passage we get to know _.A. there is more water vapour in the air in the tropics than in cold polar regions B. there is more wate

48、r vapour in the air in cold polar region than in the tropicsC. it gets more rain in the tropics than in cold polar regions because there is less vapour D. the amount of water vapour in the air depends on how often it rains(7)Technologyis the application( 应用 )of knowledgetoproduction.Thanks to modern

49、technology, we have been able to increase greatly the efficiency of our work force. New machinesand new methods have helped cut down time and expense while increasing overall output. Thishas meant more production and a higher standard of living. For most of us in America, moderntechnology is thought

50、 of as the reason why we can have cars and televisionsets. However,technology has also increased the amount of food available to us, by means of modern farmingmachinery and animal breeding techniques, and has extended our life span via( 通过 ) medicaltechnology.Will mankind continue to live longer and

51、 have a higher quality of life? In large measure theanswer depends on technology and our ability to use it widely. If we keep making progress as wehave over the past fiftyyears, the answer is definitelyyes. The advancement of technologydepends upon research and development, and the latest statistics

52、(统计 ) show that the United Statesis continuing to pump billions of dollars annually(每年 ) into such efforts. So while we are runningout of some scarce resources(少的资源 ) we may well find technological substitutes(代用品 )formany of them through our research programs.Therefore, in the final analysis the th

53、ree major factors of production(land, labor and capital)are all influenced by technology. When we need new skills, on techniques in medicine, people willstart developingnew technologyto meet those needs. As equipment proves to be slow orinefficient,new machines willbe invented. Technologyresponds to

54、 our needs in helping usmaintain our standard of living.1. What is the best title for the passage?A. The definition of technologyB. Modern technologyC. The application of technologyD. The development of technology2. Which is the main idea of the passage?A. Modern technology is the key to the improve

55、ment of standard of living.B. The three major factors of production (land, labor and capital) are all influencedbytechnology.C. Technology is the response to our needs.D. The United States is making great efforts to advance its technology.3. According to the passage, people can live a long life with the help of _.A. higher quality of lifeB. medical technologyC. modern farming machineryD. technological substitute(8)Space travel is definitely bad for astronauts bones, reducing their bone density(密度 ) afteronly a month of w