单项选择题

It can be inferred that the author's attitude is _____.

A．ideal
B．pessimistic
C．pragmatic
D．optimistic
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单项选择题
According to the passage, the problem of famine can be relieved by the following means EXCEPT _____.
A．increasing taxes in rich countries
B．distributing food from regions of excess to regions of scarcity
C．controlling population explosion
D．developing irrigating techniques
单项选择题
According to the author, it is always advisable to ______.
A．have opinions which cannot be refuted
B．adopt the point of view to which one feels the most inclination
C．be acquainted with the arguments favoring the point of view with which one disagrees
D．suspend heterodox speculation in favor of doctrinaire approaches
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