The recovery of demand for microchips is______. A: contrary to expectations B: far from certain C: not so quick as expected D: at a record-breaking speed

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