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 requirechemistry. 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 increasing knowledge of the chemical (9) ______ that take place in the human bodyresults in great strides in modem medicine. (9) ______Fortunately, most of us do not need a profound knowledge of chemistry, but someunderstanding of chemistry should be a part of the (10) ______ of every educated person. (10) ______