The promise of finding long-term technological solutions to
the problem of world food shortages seems difficult to fulfill. Many
innovations(改革，创新) that were once heavily supported have since fallen by the
wayside. The proposals themselves were technically (47) , but
they proved to be economically unavailable and culturally unacceptable to their
consumers. One characteristic common to unsuccessful food
innovations has been that, even with (48) support, they
often have not been technologically (49) or culturally
acceptable to the people for whom they had been developed. A successful new
technology, therefore, must fit the entire socialcultural system in which it is
to find a place. The (50) of new food
technologies depends on more than these technical and cultural (51)
, economic factors and governmental policies also strongly influence
the (52) success of any innovation. Economists in the
Anglo-American tradition have taken the lead in investigating the economics of
technological innovation. (Although they exaggerate in (53)
that profitability is the key factor guiding technical change--they completely
disregard the (54) effects of culture--they are correct in
(55) the importance of profits). Most technological
innovations in agriculture can be (56) used only by large
landowners and are only adopted if these profit-oriented business people believe
that the innovation will increase their incomes. A) fully
F) considerations
K) substantial B) stressing
G) adoption
L) undoubtedly C) worshipping
H) aggressive
M) visible D) claiming
I) extensive
N) adapted E) revolved
J) feasible
O) ultimate