题干

下列各句中说明纬度差异的一项是(   )

A:济南苹果开花在四月中或谷雨节,烟台要到立夏。

B:根据英国南部物候的一种长期记录,拿1741年到1750年十年平均的春初七种乔木抽青和开花日期同1921年到1930年十年的平均值相比较,可以看出后者比前者早九天。

C:在早春三四月间,南京桃花要比北京早开20天,但是到晚春五月初,南京刺槐开花只比北京早10天。

D:在华南丘陵区把热带作物引种在山腰很成功,在山脚反不适应。

上一题 下一题 0.0难度 选择题 更新时间:2021-05-25 09:20:30

答案(点此获取答案解析)

C

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    A research has shown that nearly 90 percent of traffic accidents are caused by human errors. So our aim is a fully autonomous car that gets rid of the cause of most accidents: the driver. Researcher Hodgson points out, “For safety, the faster you can remove humans, the better, even if there are unfortunately a few accidents from new causes. It s a question of balancing the number injured or killed by autonomous vehicles with the people whose lives are potentially saved.”

    It’s an idea that Elon Musk, chief executive of electric car company Tesla Motors, has long believed. His company are determined to be the first to deliver a fully autonomous vehicle to consumers. Last year, Musk announced that Tesla’s 2017 goal was “to do an example drive of full autonomy all the way from LA to New York…and have the car park itself.”

    However, even Tesla admits that there are problems to overcome—the software needs further validation and the appropriate regulatory approval needs to be in place. Indeed, recent crashes of Tesla vehicles and Google cars confirm that the software isn’t ready yet.

    The UK government appears committed to encouraging the development of autonomous vehicles. It’s supporting four city trials, publishing the Modem Transport Bill to reduce red tape around their introduction and adapting the legal system to take into account problems such as insurance liability when a human isn’t in control of a vehicle.

    The insurance industry is similarly eager to help increase autonomy in cars. As the Association of British Insurers (ABI) points out, “More than 90 per cent of road accidents are caused by human error.” This costs motor insurers a shocking £20m per day in claims.