Part B: Cloze     
            Fish farming is the fastest-growing __27__ of food production in the world. Seafood __28__ for around 17% of theworld’s protein __29__ (in some parts of Asia and Africa, the number is nearer 50%). The Organization for EconomicCooperation and Development, a rich-country __30__ , reckons that, thanks to population growth and rising incomes, globalconsumption of fish will reach 180 million tons by the end of the decade, __31__ from 158 million tons in 2020.
【題組】27.
(A) forestall
(B) form
(C) formant
(D) formation