单项选择题

Not only ______ people to send words, music, and codes to any part of the world, it can also be used to communicate far into space.

A. enabled by radio B. radio enables
C. does radio enable
D. has radio enabled
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单项选择题
Grain production in the world is ______ , but still millions go hungry.
A. staggering
B. shrinking
C. soaring
D. suspending
单项选择题
Giving a gift can convey a wealth of meaning about your appreciation of their __ and the impor- tance you place upon the relationship.
A. solidarity
B. priority
C. superiority
D. hospitality
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