Competition is good for businesses. In the world of navigation(导航) systems, however, competition is also a necessity – it may not be wise to rely on foreign systems for positioning and tracking services. Now, 511 remarkable accuracy and reliability, China’s BeiDou system has made its presence felt.
The BeiDou project was set up in 1994. The first BeiDou satellite was not launched until 2000. Now, 512 , there are already more than 20 BeiDou satellites in orbit (轨道) . They form a 513 network that provides positioning, navigation and timing services for China and several other Asian countries.
This “home-grown” system is now 514 a major upgrade. Earlier this month, two BeiDou-3 satellites, the first of China’s most powerful 515 of navigation satellites, were launched into space. The launch marks the beginning of the global 516 of the BeiDou navigation system. Over the next three years, China plans to send up 30 more BeiDou-3 satellites; The expanded navigation system will 517 create a network that is able to support military and civilian applications around the world.
Scientists involved in the project said the new system would give civilian users an accuracy of 2.5 meters to five meters, overtaking that of the 518 positioning technologies. BeiDou’s chief designer said the new satellites would be able to 519 which lane a car is using on a motorway and 520 the swing of a building in high winds. It will also be able to guide fire trucks to the nearest water hydrant (消防栓).The Chinese military, meanwhile, will be able to use coded signals for millimeter(毫米) 521 .
China is only the third country in the world to develop a navigation system on its own, after the United States (GPS) and Russia (GLONASS). Developing BeiDou is a necessity. The system 522 national security by ending a reliance on foreign systems. Moreover, it enhances China’s international reputation for technological 523 .
For most of us, the benefits of the new satellite system will be felt in a couple of years when more phones are 524 with BeiDou chips (芯片). Many smartphones today still use GPS and GLONASS. That’ll soon change with the development of BeiDou. One product manager 525 most smartphones to be able to receive BeiDou signals. He says: “In three years’ time, people may still say ‘I’m using GPS’, but in fact, their phone is tune in to BeiDou.”
511．A．dominating B．boasting C．shifting D．inputting
512．A．however B．afterwards C．moreover D．therefore
513．A．continental B．local C．domestic D．regional
514．A．enduring B．encountering C．undergoing D．processing
515．A．generation B．information C．examination D．revolution
516．A．extension B．expansion C．interaction D．invasion
517．A．objectively B．eventually C．sufficiently D．essentially
518．A．existing B．progressing C．upcoming D．everlasting
519．A．explore B．investigate C．spot D．remind
520．A．detect B．prevent C．protect D．adjust
521．A．privacy B．accuracy C．fluency D．currency
522．A．convinces B．insures C．highlights D．strengthens
523．A．innovation B．consumption C．emission D．exhibition
524．A．decorated B．furnished C．equipped D．connected
525．A．respects B．instructs C．inspects D．expects
【答案】511~515.BAADC 516~520.BBACA 521~525.BDACD
The BeiDou project was set up in 1994. The first BeiDou satellite was not launched until 2000. Now, 512 , there are already more than 20 BeiDou satellites in orbit (轨道) . They form a 513 network that provides positioning, navigation and timing services for China and several other Asian countries.
This “home-grown” system is now 514 a major upgrade. Earlier this month, two BeiDou-3 satellites, the first of China’s most powerful 515 of navigation satellites, were launched into space. The launch marks the beginning of the global 516 of the BeiDou navigation system. Over the next three years, China plans to send up 30 more BeiDou-3 satellites; The expanded navigation system will 517 create a network that is able to support military and civilian applications around the world.
Scientists involved in the project said the new system would give civilian users an accuracy of 2.5 meters to five meters, overtaking that of the 518 positioning technologies. BeiDou’s chief designer said the new satellites would be able to 519 which lane a car is using on a motorway and 520 the swing of a building in high winds. It will also be able to guide fire trucks to the nearest water hydrant (消防栓).The Chinese military, meanwhile, will be able to use coded signals for millimeter(毫米) 521 .
China is only the third country in the world to develop a navigation system on its own, after the United States (GPS) and Russia (GLONASS). Developing BeiDou is a necessity. The system 522 national security by ending a reliance on foreign systems. Moreover, it enhances China’s international reputation for technological 523 .
For most of us, the benefits of the new satellite system will be felt in a couple of years when more phones are 524 with BeiDou chips (芯片). Many smartphones today still use GPS and GLONASS. That’ll soon change with the development of BeiDou. One product manager 525 most smartphones to be able to receive BeiDou signals. He says: “In three years’ time, people may still say ‘I’m using GPS’, but in fact, their phone is tune in to BeiDou.”
511．A．dominating B．boasting C．shifting D．inputting
512．A．however B．afterwards C．moreover D．therefore
513．A．continental B．local C．domestic D．regional
514．A．enduring B．encountering C．undergoing D．processing
515．A．generation B．information C．examination D．revolution
516．A．extension B．expansion C．interaction D．invasion
517．A．objectively B．eventually C．sufficiently D．essentially
518．A．existing B．progressing C．upcoming D．everlasting
519．A．explore B．investigate C．spot D．remind
520．A．detect B．prevent C．protect D．adjust
521．A．privacy B．accuracy C．fluency D．currency
522．A．convinces B．insures C．highlights D．strengthens
523．A．innovation B．consumption C．emission D．exhibition
524．A．decorated B．furnished C．equipped D．connected
525．A．respects B．instructs C．inspects D．expects
【答案】511~515.BAADC 516~520.BBACA 521~525.BDACD
