On a clear morning in early May, Brian Lathrop, a senior engineer for Volkswagen’s Electronics Research Laboratory, was in the d

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问题    On a clear morning in early May, Brian Lathrop, a senior engineer for Volkswagen’s Electronics Research Laboratory, was in the driver’s seat of a Tesla Model S as it travelled along a stretch of road near Blacksburg, Virginia, when the car began to drift from its lane. Brian had his hands on the wheel but was not in control of the vehicle. The Tesla was in Autopilot mode, a highly evolved version of cruise control that, via an array of sensors, allows the car to change lanes, steer through corners, and match the sudden movement of traffic unaided. 【F1】As the vehicle—one of a fleet belonging to Virginia Tech’s Transportation Institute, which Brian was visiting that day—lost track of the road markings, he shook the wheel to disengage Autopilot. "If I hadn’t been aware of what was happening, it could have been a completely different outcome," Brian told me recently.
   While one’s first time behind the wheel of an autonomous car (or in front of it) may feel perilous, Volkswagen’s research has shown that trust between human and vehicle blossoms rapidly and, in many cases, completely. 【F2】A decade ago, according to Brian, the company ran a series of internal studies in which it put people in the driver’s seat of a car that they were informed was fully autonomous. 【F3】Behind them, behind a curtain, sat a driver, who controlled the car using a camera feed of the road ahead, as if playing a video game. "We found that people get comfortable very quickly—almost too quickly, in fact—in letting the car drive itself," Brian said. 【F4】Free from the activity of driving, most people experience what researchers refer to as passive fatigue—a state in which awareness is dulled. It can set in after as little as ten minutes.
   Tesla strenuously warns consumers to pay attention while their car is in autonomous mode, but the warning may not be strong enough. On Thursday, Laura MacCleery, the vice-president of consumer policy and mobilization for Consumer Reports, said that the very name of Tesla’s self-driving feature-Autopilot—"gives consumers a false sense of security."
   【F5】This is the paradox facing auto engineers: how to design self-driving cars that feel trustworthy while simultaneously reminding their users that, no matter how wonderful a given model’s safety record, no driver—human or artificial—is perfect. How, in other words, to free drivers from the responsibility of driving, while burdening them with the worry that, at any moment, they will need to take back control.
【F4】

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答案由于无需驾驶,大部分实验者陷入了研究人员所称的被动疲劳状态,思维变得迟钝。

解析 ①本句是主从复合句。主句包含一个宾语从句,破折号后的同位语也包含一个定语从句。②句首是形容词短语作原因状语,free from sth.结构意为“不受……限制”。宾语是what引导的从句,作谓语动词experience的宾语,说明大多数人所经历的事情。③句末破折号后的内容是passive fatigue的同位语,说明疲惫状态的具体内容。a state后跟有一个定语从句加以修饰,说明这种状态下思维变得迟钝。
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