_________（50）A.Therefore strict measures must be
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_________（50）
A.Therefore strict measures must be taken
B.They give the earth oxygen,and are the home for half of the world’s animals and plants
C.Because of a growing population
D.Unfortunately,these rainforests are in danger
E.Tropical rainforests are home to tribal peoples who rely on their surroundings for food,shelter,and medicines
F. They are divided into four different areas