【正确答案】 C

【答案解析】[听力原文]
   Welcome to the New Bedford Institute's series of lectures on the mysteries of the sea. You may have noticed the drawing on the cover of the program for today's presentation. It depicts a sea creature that scientists have been interested in for many years. It is said that in the 19th century a group of fishermen were surprised by seeing a huge squid that they said was as big as a house and had enormous tentacles. The fishermen were frightened out of their wits according to reports from that time. The creature sank back into the ocean and was never seen again. Marine biologists believed that this species of giant squid called archituth still exits. And it's come to represent how little we know about sea creatures, compared with what we know about the animals on the land. We do know that there are many more different kinds of marine species than there are land species. But we just don't have the technology yet to do sustained research. Even short unmanned trips are so hard to accomplish. In fact, researching in the deep oceans has been compared to flying an airplane overland throwing down a net and seeing what you get. In other words it's very hard to picture the whole situation when that's the way you have to get your samples. Most of what is known about deep sea creatures, which as I said is actually very little, comes from ocean beds that dried up long ago. We're fortunate to have a few samples of these fossil remains on display on the second floor. We'll take a look at them after a while.
   Why were the fishermen frightened of the squid?
快速浏览本部分所有选项，由其中的关键词sea animals、oceanic research、deep sea等可大致推断，文章内容可能与海洋或海洋动物研究有关，因此需要重点关注相关内容。
   1.四项均以because of开头，考查原因。
   2.比较选项可知本题考查it(可能是海洋动物)的某项特点(形状、皮肤、大小或行为)。
   结论：考查原因，可能与某海洋动物的某项特点有关。
   录音在提到信息词squid的时候用了两个形容词huge和big，很明显指的是大小，因此答案为C。