单项选择题

The author provides a sustained argument to support the assertions that ______.

A．profitability is neither necessary nor sufficient for a new technology to be adopted
B．profitability is the key factor guiding technological change
C．opaque-2-maize is of limited benefit to poor families in developing countries
D．economic factors and governmental policies strongly influence the ultimate success of any innovation

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热门试题

单项选择题The primary purpose of the passage is to discuss ______.

A．the difficulties of applying technological solutions to the problem of food shortages
B．the means of assessing the extent of the world food shortage
C．the costs of introducing a new food technology into a developing country
D．the nature of the new technological innovations in the area of food production

单项选择题The promoted Japanese manager asked for a transfer because ______.

A．he was not competent for the higher position
B．he was not accustomed to working by himself
C．he could not make the adjustment to his new job
D．he lacked adequate communication with his superiors

单项选择题The multinational training program is mostly concerned with the relation between Americans and ______.

A．the Japanese
B．Arabs
C．Brazilians
D．Orientals