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HOW MUCH PERCENT OF THE WORLD’S OXYGEN DO THE AMAZ...
HOW MUCH PERCENT OF THE WORLD’S OXYGEN DO THE AMAZON RAIN FORESTS PRODUCE
File thứ 6: TEST 45 - so 3- lop 10 2016
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26. How much percent of the world’s oxygen do the Amazon rain forests produce?
A. over 30 to 40 percent B. approximately 30 to 40 percent
C. about 40 to 50 percent D. about 50 to 60 percent
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26.
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File thứ 6: TEST 45 - so 3- lop 10 2016