B) a hazard to physical health
C) a threat to individual privacy
D) an abuse of personal freedom
38.The word logged most probably means ______ .
A) preset
B) simulated
C) entered
D) processed
39. To produce artificial noses for practical use, it is essential ______.
A) to invent chips sensitive to various chemicals
B) to develop microchips with thousands of odor receptors
C) to design a computer program to sort out smells
D) to find chemicals that can alter the electrical current passing through
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