【正确答案】 C

【答案解析】[听力原文]
   Last week, I attended a research workshop on an island in the South Pacific. Thirty people were present, and all except me came from the island, called Makelua, in the nation of Vanuatu. They live in 16 different communities and speak 16 distinct languages.
   In many cases, you could stand at the edge of one village and see the outskirts of the next community. Yet the residents of each village speak a completely different language. According to recent work by my colleagues at the Max Planck Institute for the Science of Human History, this island, just 100 kilometers long and 20 kilometers wide, is home to speakers of perhaps 40 different indigenous languages. Why so many?
   We could ask the same question of the entire globe. People don't speak one universal language, or even a handful. Instead, today" our species collectively speaks over 7,000 distinct languages.
   And these languages are not spread randomly across the planet. For example, far more languages are found in tropical regions than in the mild zones. The tropical island of New Guinea is home to over 900 languages. Russia, 20 times larger, has 105 indigenous languages. Even within the tropics, language diversity varies widely. For example, the 250,000 people who live on Vanuatu's 80 islands speak 110 different languages, but in Bangladesh, a population 600 times greater speaks only 41 languages.
   How come humans speak so many languages? And why are they so unevenly spread across the planet? As it turns out, we have few clear answers to these fundamental questions about how humanity communicates.
   Most people can easily brainstorm possible answers to these intriguing questions. They hypothesize that language diversity must be about history, cultural differences, mountains or oceans dividing populations.
   But when our diverse team of researchers from six different disciplines and eight different countries began to review what was known, we were shocked that only a dozen previous studies had been done, including one we ourselves completed on language diversity in the Pacific.
   These prior efforts all examined the degree to which different environmental, social and geographic variables correlated with the number of languages found in a given location. The results varied a lot from one study to another, and no clear patterns emerged. The studies also ran up against many methodological challenges, the biggest of which centered on the old statistical saying—correlation does not equal causation.
   What does the speaker say about the island of Makelua?
录音开始演讲者说她去参加研讨会，地点是南太平洋的一个叫Makelua的岛，然后说到，在该岛上，每个村的语言都完全不一样，故C项正确。
   A项“岛上大多数居民能说几种语言”，录音说到岛上有着偎多种语言，每个村的语言都不同，但没提及是否有人能说几种语言，A项过度推测。录音没说到语言消失的问题，排除B项“当地的一些语言正在消失”。演讲者说到其团队在研究该岛的语言问题，这只能说明该团队对此有兴趣，不等于全世界的研究人员都感兴趣，D项“其语言引起全世界研究人员的兴趣”错误。