warm
Exercise 17
Problem:Deciding where to put an industrial park.
Solution:Using these empty mines for it.
Main Idea:It is about how the underground industrial park was established in Kansas City.
Problem:How to help the economy but not damage the forest.
Solution:The Brazilians have made a deal with Pepsi-cola Company to introduce the beverage in north America.
Main Idea:By selling a natural product, Brazilians will build a strong economy without endangering the rain forest.
Problem:The usual method for cleaning up ground pollution is very expensive and complicated.
Solution:Scientists use trees and plants that can eliminate certain polluting substances.
Main Idea:Scientists now find that there is a better and less expensive way to clean up the ground pollution by using trees and plants they identified.
Exercise 18
Exercise 19
S cc l ce ps s ce cc s ce
Exercise 20
1
Sentence: d Pattern: ce
2
Sentence: e Pattern: s
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