geography
Exercise 15
Exercise 16
1
Problem:as people get older,they usually begin to experience physical problems
Solution:eat blue betties
Main idea:blue betties can slow the aging process,when people get more more and more older
2
Problem:asthma is a serious health problem for many children especially in cities, in the USA and many industrial and countries Solution:reducing pollution from automobiles
Main idea:asthma is a serious health problem for many children but which can be prevented by reducing pollution from automobiles 3
Problem:two men from Munich faced an heavy snow storm,when they were hiking
Solution:dig a cave to prevent the wind
Main idea:two men were catching the snow storm,but finally they save themselves thought digging a cave and build a small fire to keep