单项选择题

A．Sue got promoted.
B．John had to quit his job.
C．Both John and Sue got a raise.
D．Sue failed to complete her project.
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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
In Hallowell’’s view, people’’s reaction to the terrorist threat last fall was________.
A．ridiculous
B．understandable
C．over-cautious
D．sensible
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