单项选择题

Satellite communications are so up-to-date that even when（）in the middle of the Pacific, businessmen can contact their offices as if they were next door.

A. gliding
B. cruising
C. piloting
D. patrolling

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单项选择题
（34）（）

A. act
B. demonstrate
C. behave
D. perform
单项选择题
The changing image of the family on television provides （） into changing attitudes toward the family in society.

A. insights
B. presentations
C. revelations
D. specifications
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