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举一反三
【单选题】The promise of finding long-term technological solutions to the problem of world food shortages seems difficult to fulfill. Many innovations that were once heavily supported and publicized, such as fi...
A.
too much publicity can harm the chances for the success of a new food innovation
B.
innovations that produce culturally acceptable crops will generally be successful
C.
a food-product innovation can be technically feasible and still not be economically feasible
D.
it is difficult to decide whether a food-product innovation has actually been a success