[填空题]Chemistry plays an important part in our life. The (1)______ of a clock, (1) ______ the clothes we wear, and our leather shoes are all made (2)______. (2) ______ the water we drink is chemically purified. The glass and (3)______ of the mirror, (3) ______ the manufacturing of light bulbs, the paint and plaster on our walls require chemistry. The cooking, digestion and assimilation of the food are all chemical (4)______ (4) ______ The construction of an automobile may require many kinds of chemically made (5)______. (5) ______ Chemistry and its (6)______ have helped us to live longer. (6) ______ The science of medicine also (7)______ heavily upon chemistry. (7) ______ And with (8)______ and antiseptics, surgery is no longer crude and limited. (8) ______ Our increa