1、From a distance, Mr. Ralls watches one airport passenger go through the process. Now he knows to go on through, and he just waits, and as soon as the air is analyzed he will be allowed to proceed forward.The machine blasts air downward and across whoever inside the portal. Mr. Ralls says that often
2、startles people. Thats why our focus out there is to explain to them what will be taking place,the noise that they will be hearing.The way its supposed to work is that suspicious particles on clothing and exposed skin are blasted towards the floor - where, within seven seconds, the machine can detec
3、t 40 types of explosives. If any are found, security is alerted. According to the manufacturer, Smith Detection, the portals also have less than 1% error rate. Company vice president Mark Lastra says this technology is commonly used elsewhere.Smith Detection: Mostly highly controlled facilities, sen
4、sitive security, such as nuclear power plants and government buildings with high security needs.Along with increasing security, the TSA hopes to cut down on passenger wait times. It is collecting data from the airports in this test base to see if the machines are faster and more efficient than human
5、 inspectors. The Transportation Security Administration plans to deploy five more of these portals elsewhere in the nation by late spring. Eventually it would like the explosive detectors to be as common as metal detectors. I am Ky Plaskon in Las Vegas. 题目：1.For a long time, checking baggage for exp
6、losives has been a problem for airport security. 文本： 你的答案:正确答案:F得分:0 老师意见:2.Within seven seconds, the machine mentioned in the news can detect 14 types of explosives. 3.According to the manufacturer, the portals also have no error rate. 4.Along with increasing security, the TSA hopes to cut down on
7、passenger wait times. It is collecting data from the airports in the test phase to see if the machines are faster and more efficient than human inspectors. T5.The Transportation Security Administration plans to deploy five more of these portals in other nations by late winter. 2.Exercise 2: Listen t
8、o the passage and answer each question by giving the best choice.1.According to the news, in which way airport security cant detect traces of chemicals used in explosives?A）put bags in x-ray machinesB）talk to the individualC）open bags up to look insideD）use advanced technologyB2.What is the name of
9、the machines manufacturer?Smith InspectorSmith DetectorSmith DetectionSmith ScreenC3.Company vice president Mark Lastra says this technology is commonly used elsewhere. In which area the technology can be used?power planteducation buildingsnuclear power plantsCommercial buildings3.Exercise 3: Listen
10、 to the passage and fill in blanks with the missing information.I.But checking peoples bodies is not so easy. A TSA initiative that began last September to _1_ frisk more people led to _2_ of sexual harassment _3_. So TSA turned to _4_ technology _5_ what looks like a longer, more complex walk-throu
11、gh _6_ detectors in nine airports around the country.II.The machine actually will talk to the individual, _7_, and as soon as they are _8_, it will tell them to _9_.III. Along with increasing _10_, the TSA hopes to _11_ on passenger wait times. It is collecting data from the airports in the test pha
12、se to see _12_. 1. rigorously2. dozens3. complaints4. technology5. installing6. metal7. tell them to stand inside and wait8. cleared9. proceed10. security11. cut down12. if the machines are faster and more efficient than human inspectors 听力任务Computer Simulations Might Predict Future EarthquakesGeolo
13、gists say they knew a larger earthquake was coming in South Asia, but they did not know when. The Himalayan Mountains were formed some 150 million years ago after the landmass that is now India broke off from Antarctica, drifted north and collided with the rest of Asia.Scientists say the South Asian
14、 land mass is still moving towards North Asia at the rate of about two centimeters a year, making the area prone to earthquakes.Harley Benz is a researcher at the U.S. Geological Survey earthquake information center. Harley Benz: Its a broad zone of deformation, and across this zone that extends 1,0
15、00 kilometers, you have a whole series of faults and folds.Another earthquake-prone region is along the 1300 kilometer San Andreas Fault in California.It is here that John Rundle, a physics and engineering professor at the University of California at Davis, is testing his earthquake computer simulat
16、ion.John Rundle: You take these simulations, you turn them on, you run them and you do as good a job as possible in simulating or representing the past history of activity on the fault systems.Dr. Rundle uses information from tools such as global positioning satellites to create a virtual reality mo
17、del of thousands of years of earthquake activity along the San Andreas Fault. He says that in the future, this computer model may be able to predict some earthquakes just as hurricane paths are now forecast. Our goal is to be able to make forecasts on that kind of time scale and then to improve it t
18、o the point where were actually able to see the preparation process in the months and year or two leading up to a large earthquake.Dr. Rundle says that several decades from now, one third of the worlds population could live in seismically active regions. He hopes that by then, the virtual reality software will help prevent the heavy loss of life caused by tragedies such as the South Asia earthquake.Leta Hong Fincher, VOA news.1.Geologists say they knew a large earthquake
