Question 6 is based on the news report you have just heard.

News Report Three

听力原文

    (5) Six birds have just been trained to pick up rubbish at a French historical theme park.

    According to the park’s manager, Mr. Villiers, the goal is not just to clear up the park. He says visitors are already good at keeping things clean. Instead, he wants to show that “nature itself can teach us to take care of the environment”.

    (6) He says that rooks, the chosen birds, are considered to be particularly intelligent. In the right circumstances, they even “like to communicate with humans and establish a relationship through play”.

    The birds will be encouraged to clean the park through the use of a small box that delivers a small amount of bird food each time the rook deposits a cigarette end or a small piece of rubbish.

    So far, visitors to the theme park have been excited to see the birds in action. (7) However, some parents are concerned that it encourages their children to drop litter so they can watch the birds to pick it up. Villiers is not concerned about this criticism. He maintains most of the feedback he has received has been overwhelmingly positive. He hopes now to train more birds.

6. Why were rooks chosen by the park manager?

解析：A。录音中间部分说到，公园经理说人们认为白嘴鸦是特别聪明的，所以选中了这种鸟类，故正确答案为A。录音中提到B项的关键词children，但说的是一些家长担心这样会导致他们的孩子为了看到鸟儿捡垃圾而乱扔垃圾，没有提到白嘴鸦是孩子们的最爱，故B项错误。C项的关键词easy to tame和D项的关键词clean and pretty在文中都没有提及，故均可排除。