Commenting on the find, snake expert Robert Henderson, from the milwaukee Museum of Natural history, said: "Worldwide new species of frogs are being discovered and described quite regularly."
2017年6月四级真题（第二套）听力 Section A
英语六级真题
Professor Henderson, could you give us a brief overview of what you do, where you work and your main area of research? I have many Business English students.
出自-2016年12月听力原文
Professor Henderson, could you give us a brief overview of what you do, where you work and your main area of research?