Question 7 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.

7. What is the concern of some parents?

解析：B。录音后半部分说到，一些家长担心这样会导致他们的孩子乱扔垃圾，因为这样他们就可以看到鸟儿捡垃圾了。B项中的drop litter为原词复现，表述与录音完全一致，故正确答案为B。A项中的关键词harmed、C项中的关键词bird diseases在录音中没有提及，故A、C两项排除。录音中虽然提到bird food，但录音的意思是训练鸟儿捡垃圾的过程包括食物奖励，并不是说孩子们会过量喂食白嘴鸦，故D项错误。