What can be said about drinking water that is 99.9999% free of some poison, such as a pesticide?
A. The ratio of water molecules to pesticide molecules in the glass is so great that drinking the water is not problematic.
B. In each 10,000 parts of the contaminated water, there is one part pesticide and 9999 parts pure water.
C. The water is highly contaminated and surely not fit to drink.
D. In each 100,000 parts of the contaminated water, there is one part pesticide and 99,999 parts pure water.
Answer: A
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A. A B. B C. C D. D
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____________________. Fill in the blank(s) with the appropriate word(s).
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