听写填空,只写填空内容,不抄全文,4个单词/词组+1个句子,不用写标号~

Since 1980, scientists have believed a meteorite impact in the Yucatan caused a mass extinction of species, including the dinosaurs. But [-----1-----] Gerta Keller of Princeton disagrees.

Gerta Keller: This impact actually didn’t cause any species [-----2-----].

According to 20 years of research by Keller and her team, this impact happened 300,000 years after the dinosaurs disappeared. Keller believes that — instead of a space rock — volcanoes might have killed the dinosaurs.

Gerta Keller: Now we find that the other [-----3-----], which is Deccan Volcanism, may be the real culprit.

She's talking about volcanic eruptions on India's Deccan plateau between 63 and 67 million years ago. The volcanoes spewed huge amounts of sulfur dioxide into the air. With each [-----4-----] volcanic flow, Keller said, less evidence of life appears within the cores.

Gerta Keller: [-----5-----]

That's today's show, celebrating The International Year of Planet Earth.

Thanks to the National Science Foundation and US Geological Survey.

【视听版科学小组荣誉出品】
geologist extinctions catastrophe subsequent We found the first evidence that one of the main phases of the Deccan eruptions was possibly related to or caused the mass extinction.
1. geologist: a specialist in geology 2. extinctions：the act of making extinct or the state of being extinct 3. catastrophe: a sudden, extensive, or notable disaster or misfortune 4. subsequent: occurring after; succeeding. Sequent: 继[连]续的 consequent:结局的， 跟着发生的（on， upon）; (逻辑上)必然的， 当然的 5. We found the first evidence that one of the main phases of the Deccan eruptions was possibly related to or caused the mass extinction.我们发现的第一个证据，那就是主要时期之一的德干高原火山爆发可能造成了大规模的恐龙的灭亡或与之有关。 GPS：global positioning system 【视听版科学小组荣誉出品】 以上仅供参考,欢迎大家参与讨论~