PeopleinseveralAmericanstatesmaybesurprisedtose...
问题详情:
people in several American states may be surprised to see cars on city streets without a driver. Experimental driverless vehicles now are legal in Florida, Nevada and California. They are pointing the way to a future that is not far down the road. The high-tech company Google has a number of self-driving cars, which had covered 480,000 kilometers by August. Volvo is among the companies doing road tests and says it plans to sell driverless cars by 2020.
In September, California Governor Jerry Brown signed an act to allow autonomous vehicles on the roads of his state. “Today we’re looking at science fiction becoming tomorrow's reality-the driverless car. ” The technology for these cars includes cameras, radar and motion sensors. The systems have been improved through competitions sponsored by the U. S. government agency DARPA. Engineer Richard Mason of the Rand Corporation helped design driverless vehicles for DARPA challenge races.
Cars have become much more fuel-efficient, and new electronic features are' making Hondas safer, said Angie Nucci of Honda America. “A camera on the passenger-side mirror actually engaged on your guiding screen so you can safely change lanes. ” Other safety features include warning systems on the front and the sides of the cars. These systems help drivers , but don’t replace them. Curator Leslie Kendall of the Petersen Automotive Museum said autonomous cars will make the high ways safer.
“By taking out drivers, you also remove most risks of an accident, ”Kendall said. He said , “Consumers, however, may be unwilling to lose control. It may take them time to come to realize that the technology is indeed reliable, but it will have to prove itself first. ”
Mason said the technology already works and the biggest challenge now is getting down the cost for driverless vehicles from hundreds of thousands of dollars to something more affordable. He said this will happen as the technology is improved.
28. According to the passage, California Governor Jerry Brown ______________.
A. is for the idea of having driverless cars
B. sponsored the DARPA competition to improve the driverless system
C. has already bought a new autonomous car
D. thinks that driving safety is the most important issue in his state
29. What is the role of the systems mentioned in Paragraph 3?
A. They can help cars run much faster.
B. They can take the place of drivers now.
C. They can make cars run without fuel.
D. They can help people drive more safely.
Kendall’s opinion, who probably don’t rely on the driverless cars at first?
A. managers in the high-tech company Google
B. officers from the U. S. government agency DARPA
C. car consumers
D. vehicle designers
31.According to Richard Mason, what is the biggest challenge for driverless cars?
A. They need to have more comfortable seats .
B. They are now too expensive for consumers.
C. They are travelling at a low speed.
D. They are not favored by car racers
【回答】
ADCB
知识点:*经济文化类阅读
题型:阅读理解
-
下列与实验相关的叙述正确的是 A.稀释浓硫*时,应将蒸馏水沿烧杯内壁缓慢地注入浓硫*中B.配制溶液时,若加水...
问题详情:下列与实验相关的叙述正确的是 A.稀释浓硫*时,应将蒸馏水沿烧杯内壁缓慢地注入浓硫*中B.配制溶液时,若加水超过容量瓶刻度,应用胶头滴管将多余溶液吸出C.配制1mol·L-1300mLNaCl溶液可以选择一个50mL的容量瓶和一个250mL的容量瓶D.可以用右图装置进行*气的...
-
设复数(是虚数单位),则复数的虚部为( )A. B. C. ...
问题详情:设复数(是虚数单位),则复数的虚部为( )A. B. C. D.【回答】B知识点:数系的扩充与复数的引入题型:选择题...
-
(1)观察下图,请将下列国家的英文字母代号填入答题卡图中对应的方框内。早期殖*家:A.葡萄牙 B.英国(2)...
问题详情:(1)观察下图,请将下列国家的英文字母代号填入答题卡图中对应的方框内。早期殖*家:A.葡萄牙 B.英国(2)仔细观察该图,据图指出奴隶贸易的主要集运地的分布特点。【回答】 (1)上框B,下框A。(2)主要分布在非洲西海岸和东海岸。知识点:血腥的资本积累题型:综合题...
-
一个质量为4kg的物体静止在足够大的光滑水平地面上.从t=0开始,物体受到一个大小和方向周期*变化的水平力F作...
问题详情:一个质量为4kg的物体静止在足够大的光滑水平地面上.从t=0开始,物体受到一个大小和方向周期*变化的水平力F作用,力F的变化规律如图所示.则( )A.t=2s时物体沿负方向运动的位移最大B.t=4s时物体运动的位移达最小值C.每个周期内物体的速度变化为一定值D.从t=0开...
相关文章
- Ifoverweightpeopleeatlessandtakemoreexercise,they’llso...
- Toprotecttheenvironment,supermarketsdon't freeplas...
- Toprotecttheenvironment,supermarketsdon't freeplas...
- 71.Sometimeswearesupposedto (思考)onourselvesdeeply...
- Toprotecttheenvironment,supermarketsdon't freeplas...
- Toprotecttheenvironment,supermarketsdon't freeplas...
- We’veallexperiencedpeerpressure(同伴压力).Ithappenstoeveryb...
- Toprotecttheenvironment,supermarketsdon't freeplas...
- TherearesomestoriesbehindEnglishwords. You'vespe...
- Thesupermarkettriedeverypossiblemeansto