共享题干题 （一） Computers in Car阅读材料，回答下列的问题： You're far from home on alonely road. Shadowy forests stretch away on both sides. athickmist (雾) makes it difficult to see far beyond your car's windshield (挡风玻璃)."Can this B．e route 90A?" you wonder. If it is, you should be near atown. Yet there's nohint of one. Night is closing in. And you're low on gasoline. This is asituation where an in-car puter that can navigate would be abig help.A car puter that navigates? Yes! Such puters exist. Several experimental models arebeing tested by General Motors, Ford, Chrysler, and several foreign car makers. These putersvary in detail. but they all contain series of maps on videodiscs or videotapes. For example, oneputer system contains 13,300 maps covering the continental US. before starting out on atrip, A．driver can type in the code for the region he or she plans todrive through. The puter then shows amap of that region. At the same time, atiny radio re-ceiver linked to the puter goes to work. It picks up signals from navigation satellites such asthe NAVSTAR network. Using these signals, the puter shows the car's position at all timesand displays this position on the map. The puter can also calculate and display the best routeto follow. Anavigation puter may also receive and use dataabout road construction, weather condi-tions, and trafficjams. This information would be displayed to the driver and the puter wouldalso use the information to work out alternate (交替的 ) routes. Most cars nowadays also contain puters that help cars run more efficiently. Microproces-sors (微处理的) control certain engine functions B．y regulating the mixing of fuel. Dataon carspeed, oil pressure, revolutions per minute, engine temperature, and fuel level can be displayedas digital data(numbers) or warning lights. Some auto designers suggest that acentral puter display be used to clearly present suchtimely information as car speed and fuel level. Warning lights would indicate adrop in oil pres-sure or asudden rise in engine temperature. To get more information on these conditions, thedriver could call it up on the puter display screen. When needed, the puter could be"asked" to provide navigation aid or information about the car's condition.1.[不定向选择题]Of the following functions, which is NOT possessed by the navigation puter?A.Showing amap of the region adriver plans to drive throug. B.Predicting acar crash on the road. C.Getting information about road construction, weather conditions, and trafficjams. D.Showing the car's position at all times and displaying it on the map. 2.[不定向选择题]by describing atypical situation of alost driver on the road, the author intends to____________.A.make us believe how plex the highway puter network is B.let us know how in-car puters are linked to road signs C..show us how helpful anavigation puter can be D.tell us that NAVSTAR has e into use
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1.参考答案：B
参考解析：选项中给出了计算机导航系统的几个功能，问其中哪项不是。通过阅读短文，我们发现选项B．的信息文中没有提到，故此题选B。
2.参考答案：C
参考解析：文章第二段描述了一位司机迷路的情况，紧接着第三段讲到，当汽车上装载了计算机导航系统后，会给司机到来很大的方便。很明显，答案为选项C。3.[不定向选择题]Without signals from navigation satellites, the in-car puter____________.A.would still be able to locate th car's position at all times. B.would fail to locate the car's position C.could still work out the best route to follow D.would seek help from the radio receiver linked to it