The words in the box below are either active words or academic words marked in the Academic Word List (AWL). Choose the most suitable one to complete each sentence. Change the form where necessary. bind compound convert defined exposure factor impact launch reaction source 1) It has been proven by scientists that continuous _____________ to sound above 80 decibels (分贝) could be harmful to one's ears. 2) Honey is basically a ___________ of water, two types of sugar, vitamins and enzymes. 3) Fish is a rich _____________ of protein, which is significant for one's growth and health. 4) The engineers put up a series of four connected tubes in the water to _____________ wave motion cleanly into electricity. 5) It is urgent for the ill-managed company to establish more ______________ responsibilities for each employee to carry out its activities. 6) The technicians' support is an important ___________ in the success of our research project. 7) When two or more elements combine and form a compound, a chemical ____________ takes place. 8) The public expect the conference to have a marked ________________ on the future of the national economy. 9) The new liquid spray-on skin technology, which __________ to the topmost layer of skin, is a world first Australian invention. 10)The company is about to _____________ a worldwide advertising campaign to promote its sales.xx