2002年01月英语六级真题 -- 阅读1
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Part II Reading Comprehension (35 minutes)
Passage One
Questions 21 to 25 are based on the following passage.
Navigation computers, now sold by most car-makers, cost $2,000 and up. No surprise, then, that they are most often found in luxury cars, like Lexus, BMW and Audi. But it is a developing technology－meaning prices should eventually drop-and the market does seem to be growing.
Even at current prices, a navigation computer is impressive. It can guide you from point to point in most major cities with precise turn-by-turn directions-spoken by a clear uman-sounding voice, and written on a screen in front of the driver.
The computer works with an antenna ( 天线 ) that takes signals from no fewer than three of the 24 global positioning system (GPS) satellites. By measuring the time required for a signal to travel between the satellites and the antenna, the car's location can be pinned down within 100 meters.
The satellite signals, along with inputs on speed from a wheel-speed sensor and direction froma meter, determine the car's position even as it moves. This information is combined with a map database. Streets, landmarks and points of interest are included.
Most systems are basically identical. The differences come in hardware-the way the computer accepts the driver's request the way it presents the driving instructions.On most systems, a driver enters a desired address, motorway junction or point of interest via a touch screen or disc. But the Lexus screen goes a step further: you can point to any spot on the map screen and get directions to it.
BMW's system offers a set of cross hairs ( 瞄准器上的十字纹 ) that can be moved across themap (you have several choices of map scale) to pick a point you'd like to get to. Audi's screen can be switched to TV reception.
Even the voices that recite the directions can differ, with better systems like BMW's and Lexus's having a wider vocabulary. The instructions are available in French, German, Spanish, Dutch and Italian, as well as English. The driver can also choose parameters for determining the route: fastest, shortest or no freeways ( 高速公路 ), for example.
21. We learn from the passage that navigation computers________.
A) will greatly promote sales of automobiles
B) may help solve potential traffic problems
C) are likely to be accepted by more drivers
D) will soon be viewed as a symbol of luxury
22. With a navigation computer, a driver will easily find the best route to his destination________.
A) by inputting the exact address C) by checking his computer database
B) by indicating the location of his car D) by giving vocal orders to the computer
23. Despite their varied designs, navigation computers used in cars
A) are more or less the same price
B) provide directions in much the same way
C) work on more or less the same principles
D) receive instructions from the same satellites
24. The navigation computer functions________.
A) by means of a direction finder and a speed detector
B) basically on satellite signals and a map database
C) mainly through the reception of turn-by-turn directions
D) by using a screen to display satellite signals
25. The navigation systems in cars like Lexus, BMW and Audi are mentioned to show
A) the immaturity of the new technology
B) the superiority of the global positioning system
C) the cause of price fluctuations in car equipment
D) the different ways of providing guidance to the driver
Part II Reading comprehension
21． 文章第二段中提到，导航计算机能够给司机提供精确的运行提示，既然能如此，也就能够帮助解决大城市中所存在的交通问题。由此可以推断，答案应该是B。
22．[A] 本题考查的是司机运用导航计算机的方式。文章第5段提到On most systems, a driver enters a desired address, 说明司机要想找到最佳的驶车路线，只需输入目的地即可，答案为A。
23．[C] 文章的后半部介绍了几种车型所用导航计算机的不同之处，一是the driver's request for a directions, 一是the way it presents the driving instructions，由此可以判断选项B，D不对。从Most systems are basically identical可以判断，无论什么样的导航计算机，其工作原理大体相同，即C。
24． 文章第三段介绍了导航计算机的工作原理，一是通过天线接收卫星上发送的信息，文章第四段又介绍了这种信息要与计算机内所储存的地图结合（combined with a map database）。由此可以判断答案为B。本题回答的是导航计算机的工作原理，而没有区分什么类型的导航计算机，这就说明，导航计算机的工作原理是相同的，因此，由本题可以推断23题答案为C。
25． 各导航系统通过不同的方式给司机提供指示，D与你相同，现象不是目的，所以不对。导航计算机借助global positioning system的帮助能够以这么多种方式为司机提供帮助，也正说明了其优越性，所以答案 B。
