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Older Volcanic Eruptions
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50. Older Volcanic Eruptions（综A）
1) Why did older volcanic eruptions do more damage than more recent ones?
2) How did Wignall calculate the killing power of those older volcanic eruptions?
3) When did dinosaurs become extinct?
4) What can be inferred from paragraph 3 concerning dinosaurs?
5) What is the main thesis of the article? |
50. Older Volcanic Eruptions（综A）
1)Because they killed off life more easily.
2)By comparing the proportion of life wiped out with the volume of lava produced.
3)65 million years ago.
4)The cause of their extinction has remained a controversial issue.
5) Older volcanic eruptions were more destructive. |