Question 21 is based on the recording you have just heard.

Recording Two

听力原文

       (19) [With the use of driverless vehicles seemingly inevitable, mining companies in the vast Australian desert state of Western Australia are definitely taking the lead. Iron ore is a key ingredient in steelmaking. The mining companies here produce almost 300 million tons of iron ore a year. The 240 giant autonomous trucks in use in the Western Australian mines can weigh 400 tons, fully loaded, and travel at speeds of up to sixty kilometers per hour.] They are a technological leap, transporting iron ore along routes which run for hundreds of kilometers from mines to their destinations. Here when the truck arrives at its destination, staff in the operation center direct it precisely where to unload. Vast quantities of iron ore are then transported by autonomous trains to ocean ports. Advocates argue these automated vehicles will change mining forever. It may only be five years before the use of automation technology leads to a fully robotic mine. 

       (19) [A range of factors has pushed Western Australia’s desert region to the lead of this automation revolution.] These include the huge size of the mines, the scale of equipment and the repetitive nature of some of the work. Then there’s the area’s remoteness, at 502,000 square kilometers. It can sometimes make recruiting staff a challenge. Another consideration is the risks when humans interact with large machinery. There are also the financial imperatives. The ongoing push by the mining corporations to be more productive and more efficient is another powerful driver in embracing automation technology.

        The concept of a fully autonomous mine is a bit of a misleading term, however. This is because the more technology is put into the field, the more people are needed to deploy, maintain and improve it. (20) [The automation and digitization of the industry is creating a need for different jobs.] These include data scientists and engineers in automation and artificial intelligence. The mining companies claim automation and robotics present opportunities to make mining more sustainable and safer. Employees will be offered a career that is even more fulfilling and more rewarding.

        (21) [Workers’ unions have accepted the inevitability of the introduction of new technology. But they still have reservations about the rise of automation technology.] Their main concern is the potential impact on remote communities. As automation spreads further, the question is how these remote communities will survive when the old jobs are eliminated. And this may well prove to be the most significant impact of robotic technology in many places around the world.

21. What is the attitude of workers’ unions towards the introduction of new technology?（工会对新技术的引进持什么态度？）

解析：D。录音后面提到，工会已接受了（accepted）引进新技术的必然性，但对自动化技术的崛起仍持保留态度（reservations），D项是对这一内容的概括总结，因此选D。

错项排除：录音中提到工会接受了新技术引进的必然性，并没有说是欢迎，故A项排除；C项与这一态度相悖，故排除。B项利用录音中的impact进行干扰，但录音中提到工会担心（concern）新技术引进对偏远地区的影响，并不是消极地wait to see its effect，故排除B项。