7．Which part is this article possibly chosen from on the Internet?

　　A．Health report.　　　　 　B．Science in the news.

　　C．Explorations. D．Technology report.

　　解析：选B　文章出处题。根据文章第四段第一句"Pauly told VOA that better estimates of the actual global catch will help ensure there will be enough fish in the future."可知，保利在接受"美国之音"的采访时说了些话，由此可推断出这是一则新闻，故选B项。

　　C

　　(2018·合肥高三质检)"The noise made by boats of whale watching tourists may be causing communication problems for the animals，" British researchers said last week.

　　Whale watching is a popular tourist activity in places where groups of killer whales (虎鲸) live.Every day, dozens of boats filled with tourists go to watch the beautiful animals.Unfortunately, the engines of the boats make a lot of noise, and that may be causing problems for the whales, according to a report in the US science magazine Nature.

　　The whales travel in groups, and communicate with each other through sonic calls that some scientists refer to as singing.The sounds of the boat engines may be creating too much background noise for the whales to be able to hear each other.

　　The researchers listened to recordings of whale calls made between 15 and 25 years ago, before whale watching became popular.These were compared to more recent recordings.

　　They found that the animals have started to sing for longer than they used to, like a person shouting to a friend across a noisy room.

　　It is believed that the whales are trying to communicate hunting or breeding information.Scientists said that, if this is prevented, the future of the world's whale population could be in danger.

　　 "Animals become slow in mind and repeat themselves in noisy areas，" said Volker Deecke, a Canadian biologist."They have to say things twice or three times in order to be understood."

　　The killer whales studied were living off the coast of northwestern America.The number of killer whales in this area has been falling for several years, but scientists are not sure why.

语篇解读：本文首先介绍了观鲸船所产生的噪音对虎鲸的交流造成了困难，然后又介绍了观鲸旅游的盛行和虎鲸的交流方式。

　　8．The passage mainly tells us ________.

A．the problems of whale watching