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  3. The promise of finding long-term technological solutions to the problem of world food shortages seems difficult to fulfill. Many

The promise of finding long-term technological solutions to the problem of world food shortages seems difficult to fulfill. Many

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问题     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【S1】______, 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【S2】______support, they often have not been technologically【S3】______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【S4】______of new food technologies depends on more than these technical and cultural【S5】______, economic factors and governmental policies also strongly influence the【S6】______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【S7】______that profitability is the key factor guiding technical change--they completely disregard the【S8】______effects of culture--they are correct in【S9】______the importance of profits). Most technological innovations in agriculture can be【S10】______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
【S7】
选项
答案D
解析 空格处单词位于介词in之后，that引导的宾语从句前，需要填入动词的现在分词。该句意为：尽管他们言过其实，声称技术革新最关键的因素是收益性……因此D claiming“根据权利要求，声称，主张”符合题意。
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