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Module 6 Animals in Danger
SectionⅠ Introduction & Reading —Pre-reading
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?1.Why would the coal miners take a bright yellow
canary down into the mines with them about 100
years ago?
2.According to the passage, what factors make the
habitats (栖息地) for birds smaller and smaller?
About 100 years ago, coal miners would take a bright yellow canary (金丝雀)down into the mines with them. The miners wanted to hear the bird's sweet song, but not for the reason you might think. As long as the canary sang, the miners knew the air in the mine was clean and safe. If the canary got sick, they knew it was time to go.
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