Considerable effort is being exerted today to achieve more accurate weather predictions. With the use of electronic instruments and earth satellites, enormous gains have taken place recently in identifying and tracking storms over regions which have but few meteorological stations. Extensive experiments are also in progress for? weather modification studies 21. One characteristic of weather maps not mentioned by the author in this passage ????? A. fronts? ? B. changes in temperature? C frost????? D. wind 22. The 30-day forecast is determined by examining ?? A. daily weather maps??? B. upper air levels C. satellite reports????????????? D. changing fronts 23. The observation of weather conditions by satellites is advantageous because it?? A.????? is modern and profitable for the companies involved B ????? uses electronic instruments to measure the weather on a daily basis C ????? enables man to easily alter the weather to his advantage and profit D???? gives the scientists information not obtained readily otherwise 24. At the present time, experiments are being conducted in? A. manipulating weather? B. determining density of pressure group C. satellites???????????? D. controlling storms 25. A weather map is synoptic because it??? A.????? summarizes a great deal of information B ???? appears daily C????? shows changing fronts D???? can be interpreted accurately
Considerable effort is being exerted today to achieve more accurate weather predictions. With the use of electronic instruments and earth satellites, enormous gains have taken place recently in identifying and tracking storms over regions which have but few meteorological stations. Extensive experiments are also in progress for？ weather modification studies. 21. One characteristic of weather maps NOT mentioned by the author in this passage is？？？？？ . A. fronts？？？？？？？ B. changes in temperature？？？ C. frost？？？？？？ D. wind speed 22. The 30-day forecast is determined by examining ？？？？？？. A. daily weather maps？？？？？？？？？？ B. upper air levels C. satellite reports？？？？？？？？？？？？？？ D. changing fronts 23. The observation of weather conditions by satellites is advantageous because it？？？？？ . A.？？？？？ is modern and profitable for the companies involved B.？？？？？ uses electronic instruments to measure the weather on a daily basis C.？？？？？ enables man to easily alter the weather to his advantage and profit D.？？？？ gives the scientists information not obtained readily otherwise 24. At the present time, experiments are being conducted in？？？？？ . A. manipulating weather？？？？ B. determining density of pressure groups C. satellites？？？？？？？？？？？？？？？ D. controlling storms 25. A weather map is synoptic because it？？？？？？ . A.？？？？？ summarizes a great deal of information B.？？？？？ appears daily C.？？？？？ shows changing fronts D.？？？？ can be interpreted accurately
With only a bout l, 000 pandas left in the world, China is desperately trying to clone the animal and save the endangered species. Thats a move A&M University researcher has been undertakin for the past five years in a project called"Noah's Ark Dr. Duane kraer of Vet Medicine and a pioneer in embryo transfer work and related procedures said he salutes the Chinese effort and "i wish them all the best success possible. It's a worthwhile project, certainly not an easy one, and it's very much like what we' re attempting here at Texas A&M---to save animal rom extinction Noah s Ark is aimed at collecting eggs, embryos, semen and DNA of endangered animals and storing them in liquid nitrogen. If certain species should become extinct, Kraemer says there would be enough of the basic building blocks to reintroduce the species in the future t is estimated that as many as 2, 000 species of mammals, birds and reptiles will become extinct over the next 100 years. The panda. Native only to china in danger of becoming extinct in the next 25 years. This week, Chinese scientists said they grew an embryo by introducin cells from a dead female panda into the egg cells of a Japanese white while 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. The nuclear transfer of one species to another is not easy, and the lack of available panda eggs could be a ma jor problem, Kraemer believes They will probably have to do sevcral hundred transfers to result in one pregnancy. It takes a? long time and it's difficult, but this could be groundbreaking science if it works. They are certainly not putting any live pandas at risk, so it is worth the effort, adds Kraemer, who is one of the leaders of the Missyplicity project at Texas A&M, the first-ever attempt at cloning a dog They are trying to do something thats never been done, and this very similar to our work in Noah's Ark. We' re both trying to save ani that face extinction. I certainly applaud their effort and there's a lot we can learn from what they are attempting to do. It's a rescarch that is very much needed. 26. The aim of“Noah’sArk” project is to????????
2 With only a bout 1,000 pandas left in the world, China is desperately trying to clone the animal and save the endangered species. That’s a move similar to what a Texas A&M University researcher has been undertaking for the past five years in a project called “Noah’s Ark”. Dr. Duane Kraemer, a professor in Texas A&M’s College of Veterinary Medicine and a pioneer in embryo transfer work and related procedures, said he salutes the Chinese effort and “I wish them all the best success possible. It’s a worthwhile project, certainly not an easy one, and it’s very much like what we’re attempting here at Texas A&M---to save animals from extinction.” Noah’s Ark is aimed at collecting eggs, embryos, semen and DNA of endangered animals and storing them in liquid nitrogen. If certain species should become extinct, Kraemer says there would be enough of the basic building blocks to reintroduce the species in the future. It is estimated that as many as 2,000 species of mammals, birds and reptiles will become extinct over the next 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 introducing cells from a dead female panda into the egg cells of a Japanese white while 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. “The nuclear transfer of one species to another is not easy, and the lack of available panda eggs could be a major problem,” Kraemer believes. “They will probably have to do sevcral hundred transfers to result in one pregnancy. It takes a？ long time and it’s difficult, but this could be groundbreaking science if it works. They are certainly not putting any live pandas at risk, so it is worth the effort,” adds Kraemer, who is one of the leaders of the Missyplicity 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 very similar to our work in Noah’s Ark. We’re both trying to save animals that face extinction. I certainly applaud their effort and there’s a lot we can learn from what they are attempting to do. It’s a rescarch that is very much needed.” 26. The aim of “Noah’s Ark” project is to？？？？？？？？