Book Fair—facts&figures
The Frankfurt Book Fair, the largest, oldest and most important book fair in the world, brings together an estimated 80,000 executives from the international book and media industry, while nearly 10,000 journalists from about 70 countries report(31)_______the event.
To begin(32)_______, the Frankfurt Book Fair was primarily an order fair(33)_______ booksellers from Germany but, as its international importance grew, the(34)_______ of rights and licenses became its central activity. (35)_______three-quarters of the publishing world's rights and licenses(36)_______ now transacted trough the Frankfurt Book Fair.
The Frankfurt Book Fair has responded to the development of the electronic media by, in 1993, setting (37)________a separate exhibition area at the fair. (38) _______two years, the number of exhibitors offering electronic publishing products increased eight-fold, (39)_______ that now the Frankfurt Book Fair is the most important event in the medium of electronic publishing(40)________well as books.
请回答第（31）空
A.over B.on C.at正确答案B
