阅读理解。
|
Driving speeds have largely stabilized, and nowadays, safety concerns are important and reducing
road accidents to minimum is a must. So, automakers are focused on safety systems more than ever
before.
Given the emphasis on improving safety, it's possible that well-known phrases such as "live fast and
die young" may lose their meaning as innovative (创新的) new devices are built into cars and trucks
and other things that go.
Many of the new safety systems that are being added to high-end vehicles are computer-assisted
technologies that transfer some of the vehicle's operations to the vehicle itself, rather than relying only
on the driver's decision-making skills.
For example, predictive brake assist is an in-vehicle feature that prepares the vehicle for braking
when its built-in sensors detect a potential object ahead. The predictive brake assist basically places
the vehicle's braking system on alert, which helps the system to slow down the car in as little time and
as short a distance as possible.
Other in-vehicle sensors will detect moving and still objects and will even distinguish the objects
based on simple patterns, such as other vehicles vs. a person.
What's more, built-in "active systems", i.e., predictive precollision (可预测碰撞) systems, will provide
drivers with advance detection of potential contact between vehicles. These systems compute the
relative movement of the objects and detect possible dangerous intersections (交点).
What technological developments have enabled innovations like predictive precollision systems?
Essentially, these so-called active systems are the result of vehicle-to-vehicle and vehicle-to-infrastructure
communications.
These communication links allow highways to provide a vehicle's owners with services such as renting
a movie during the trip, as well as reduce reaction delays when medical care is needed due to a crash.
Despite these new technologies, drivers cannot take safety for granted.
Until all vehicles are fully automated, it is the drivers themselves who are responsible for operating
their vehicles and obeying traffic laws designed to keep roadways secure. So, keep your eyes on the
road and your hands on the steering wheel (方向盘).
1. "Predictive Precollision" can be used to _________.
A. detect possible dangerous crossroads
B. compute the relative movement of the contacting vehicles
C. brake the car automatically in as little time as possible
D. detect potential contacts between vehicles in advance
2. Which of the following statements is NOT true?
A. Advanced safety systems make driving an easier job.
B. Automakers pay more attention to safety system than before.
C. New advanced technology makes the vehicle operation rely only on the vehicle itself.
D. Drivers are still expected to drive carefully despite the built-in advanced safety system.
3. We can conclude that the new technology will _________.
A. put an end to road accidents
B. force people to obey traffic laws
C. see a wide use in the future
D. ensure the quality of medical care
4. Which of the following would best serve as the title for the passage?
A. Live fast, die young
B. New systems, safer driving
C. New technology, relaxed drivers
D. High-end vehicles, big innovation
都可以表示羟基
都可以表示溴离子
与
都可以表示乙醇
与O="C=O" 都可以表示二氧化碳