Give the Russian equivalents to these words and word combinations and learn them. Fairs and exhibitions, international, national and specialized exhibitions and fairs, to take part in smth, scope, on display, a wide range of exhibits, achievements in industry, a partici pant, to negotiate the sale, advertise products, under the motto, to make progress in smth, through economic cooperation, to pave the way for smth, consolidation, to show much interest in the exhibits, commercial centres, the purchase of different goods.