阅读理解A
Imagine this: You jump into a car on a weekend morning, and it takes you to where you want to gowithout needing any directions. When it drops you off, it drivers itself back home, so you don't have to worry about parking. This is what self-driving cars can do.
A self-driving car, also called an autonomous or driverless car, is a car that can sense its surroundings(周围环不境)and drive without human help. Depending on how advanced(先进的)the car is,it might needdifferent levels of human help. At the highest levels, a person might not need to control the car at all. But atlower levels, a person might still need to step in sometimes.
However, making self-driving cars isn't simple. According to Wired, it's a whole system with differentparts that need care.Things like road networks influence it.
Although making self-driving cars takes a lot of time and money, the benefits (益 b) are worth it. Forexample, these cars could reduce road accidents. US goverment data shows that 94 percent of crasheshappen because of drivers' mistakes. This means spending less money on medical bills,less missed workand fewer car repairs.
Self-driving cars can also give more freedom to people with disabilities (5疾). Besides,these carscould use less fuel (汽j油) and produce less pollution by cutting down on traffic jams and not running when they're not needed.Many big companies such as Baidu and Tesla are making self-driving cars. Wired magazine said thistechnology could add $7 trillion (more than 49 trillion yuan) to the world economy soon. Goldman Sachs, aglobal investment bank, said self-driving cars could make up 10 percent of new car sales by 2030.
I. What is the main idea of Paragraph 1?
A. To teach how to park a self-driving car.
B. To explain how to drive a self-driving car.
C.To tell where you can buy a self-driving car
D. To introduce what self-driving cars can do.
2. Why might a self-driving car still need help from a human,according to Paragraph 2?
A. The car is new to the road.
B. The car is not advanced enough yet.
C. The car cannot communicate with its passengers.
D. The car is still learing how to work with humans.
3, How can self-driving cars help reduce road accidents?
A. By driving shorter distances.
B. By avoiding traffic jams.
C, Bv reducing drivers' mistakes
D. By not running when not needed.
4. Why are some big companies making sclf-driving cars, according to the last paragraph?
A. They have enough time and money.
B. They sce the advantages of self-driving cars.
C. They want to make cars less expensive.
D. They use self-driving cars to test new technology.
5. According to Goldman Sachs,the future of self-driving cars is
A.bright
B.unknown
C.dangerous
D.troublesome
阅读理解B
Self-driving cars do not have people telling them what to do, They move themselves about safely byfoing three things right: learning about the environment, deciding what to do next, and taking action.
First, the car needs to know what is around it. It uses many different sensors (传感器)to do this. Thesesensors, such as cameras and radar, are like the car's "eyes", They allow the car to "sce" things such aspcople and traflic lights. The sensors also help the car know where and how fast it is going.
Besides knowing what is close by, a sclf-driving car makes plans ahead to avoid traffic accidents. Thisis where "vehicle to everything"(V2X) comes in. This technology connects a self-driving car with peopleand things, It also allows the car to go online. All these things help the car "talk" with the outside world andget the latest road information.
intfoAner repeiyving the infortmagtiam gte cer met tonteratgeit atnd desitdg whaetteg do so it com hiner hgmulti-sensor fusion (多传:感器融合). Machine learing plays an important role here bccause it hclps the carrecognize people and objects.Then,the car can decide when to stop, go, or turn.
Finally, to carry out decisions, the car uses drive-by-wire technology (线技技术). It allows the car togive "orders" to its wheels,brakes (刹 ) and engine in the form of electronic signals (电子信 号). makes different parts of the car respond quickly. The car also uses less oil this way, which is good for the
environment.
1. What is Paragraph 2 mainly about?
A. Ways to use different sensors in self-driving cars.
B. The differences between the "eyes" of cars and humans.
C. How self-driving cars learn about their environment.
D. When and where self-driving cars work the best.
2. What does V2X technology do?
A. It allows the car to see in the dark.
B. It allows the car to connect with people and things.C, It allows the car to connect with other cars.D, It allows the car to give "orders" to its wheels.
3. What does multi-sensor fusion mean?
A. Getting all road information.
B. Using Al technology to finish a puzzle.
C. Putting together information from all sensors.
D. Connecting self-driving cars with cach other on the road.
4. What do we know about drive-by-wire technology?
A. It hclps sclf-driving cars drive faster.
B. It allows self-driving cars to run without oil.
C. It can collect signals from different traffic lights.
D, It helps control the movement of sclf-driving cars.
5.What is the text mainly about?
A. How self-driving cars work.
B. Why self-driving cars are good.
C. The development of self-driving cars.
D. The safety issues of self-driving cars.
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