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1.Exercise 1: Listen to this passage and decide whether the following statements are true or false, write T for true and F for false.
听力文本：
Airport Security Screens Passengers Using New Technology
Checking baggage for explosives hasn't been a problem. Airport security can put bags in x-ray machines, open them up to look inside, or use advanced machinery that that check traces of chemicals often used in explosives.
But checking people's bodies isn't so easy. A TSA initiative that began last September to rigorously frisk more people led to dozens of sexual harassment complaints. So the TSA turned to technology installing what looks like a longer, more complex walk-through metal detectors in nine airports around the country.
Jose Ralls is the TSA director from McCarran International in Las Vegas.
Jose Ralls: The machine actually will talk to the individual, telling them to stand inside and wait, and as soon as they are cleared, it will tell them to proceed.
From a distance, Mr. Ralls watches one airport passenger go through the process.
Jose Ralls: 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 startles people.
Jose Ralls: That's why our focus out there is to explain to them what will be taking place,the noise that they will be hearing.
The way it's supposed to work is that suspicious particles on clothing and exposed skin are blasted towards the floor -- where, within seven seconds, the machine can detect 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, sensitive 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 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 explosives has been a problem for airport security. 文本： 你的答案: F 正确答案: F 得分: 5.00
题目：2.Within seven seconds, the machine mentioned in the news can detect 14 types of explosives. 文本： 你的答案: F 正确答案: F 得分: 5.00
题目：3.According to the manufacturer, the portals also have no error rate. 文本： 你的答案: F
正确答案: F 得分: 5.00
题目：4.Along with increasing security, the TSA hopes to cut down on 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. 文本： 你的答案: T 正确答案: T 得分: 5.00
题目：5.The Transportation Security Administration plans to deploy five more of these portals in other nations by late winter. 文本： 你的答案: F 正确答案: F 得分: 5.00
2.Exercise 2: Listen to the passage and answer each question by giving the best choice.
听力文本：
Airport Security Screens Passengers Using New Technology
Checking baggage for explosives hasn't been a problem. Airport security can put bags in x-ray machines, open them up to look inside, or use advanced machinery that that check traces of chemicals often used in explosives.
But checking people's bodies isn't so easy. A TSA initiative that began last September to rigorously frisk more people led to dozens of sexual harassment complaints. So the TSA turned to technology installing what looks like a longer, more complex walk-through metal detectors in nine airports around the country.
Jose Ralls is the TSA director from McCarran International in Las Vegas.
Jose Ralls: The machine actually will talk to the individual, telling them to stand inside and wait, and as soon as they are cleared, it will tell them to proceed.
From a distance, Mr. Ralls watches one airport passenger go through the process.
Jose Ralls: 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 startles people.
Jose Ralls: That's why our focus out there is to explain to them what will be taking place,the noise that they will be hearing.
The way it's supposed to work is that suspicious particles on clothing and exposed skin are blasted towards the floor -- where, within seven seconds, the machine can detect 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, sensitive 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 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.According to the news, in which way airport security can't detect traces of chemicals used in explosives? 文本：
A) put bags in x-ray machines B) talk to the individual C) open bags up to look inside D) use advanced technology 你的答案: B 正确答案: B 得分: 5.00
题目：2.What is the name of the machine's manufacturer? 文本：
A) Smith Inspector B) Smith Detector C) Smith Detection D) Smith Screen 你的答案: C 正确答案: C 得分: 5.00
题目：3.Company vice president Mark Lastra says this technology is commonly used elsewhere. In which area the technology can be used? 文本： A) power plant B) education buildings C) nuclear power plants D) Commercial buildings 你的答案: C 正确答案: C 得分: