Humans are the ultimate invasive species—when they move into new territory, they often displace the wildlife that was already living there. And as land is cleared for those new cities—especially in the dense tropical forests—carbon will be released into the atmosphere as well. (CET6-2014.12)
举一反三
- Invasive species A: are often transplanted by humans to new environments. B: have the ability to exploit the resources in their environment to their benefit. C: reproduce and grow rapidly. D: all of the above.
- Carbon dioxide is released when you ________ .() A: exhale B: inhale
- When people talk about the cities of US, the first _____ comes into mind is New York. ( )
- It is pretty well understood _______ controls the flow of carbon dioxide in and out of the atmosphere today.
- 27. There will come a day when all of us will be living in cities quite unlike ( ) of the present. A: that B: those C: ones D: the ones