106- From the figures in the passage, we learn that……. .
A) there are only about 2,650 known species of plant in the world
B) about 265,000 of the world's flowering plants can be used as medicine
C) breakthroughs in technology have diminished the interest in plants with medicinal value
D) plants that can be used as medicines are worth more than gold
E) around 25 percent of the world's prescription drugs are plant-based
107- The passage tells us that tropical rain forests and mountain ranges of the
tropics……. .
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