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[主观题]
To produce artificial noses for practical use, it is essential ______ .A.to develop microc
To produce artificial noses for practical use, it is essential ______ .
A.to develop microchips with thousands of odor receptors
B.to invent chips sensitive to various chemicals
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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