单项选择题

Politically these nations tend to be ______, with very high birth rates but poor education and very low levels of literacy.

A. unstable
B. reluctant
C. rational
D. unsteady
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单项选择题
A word processor is much better than a typewriter in that it enables you to enter and （）your text more easily.

A. register
B. edit
C. propose
D. discharge
单项选择题
Please（）dictionaries when you are not sure of word spelling or meaning.

A. seek
B. inquire
C. search
D. consult
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