单项选择题

The team leader of mountain climbers marked out ______.

A．that seemed to be the best route
B．what seemed to he the best route
C．which seemed to he the best route
D．something that to be the best route
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单项选择题
The concept of internet, ______ has intrigued scientists since the mid-20th century.
A．the transmission of images, sounds and messages over distances
B．transmitting of images, sounds and messages along distances
C．to transmit images, sounds and messages on distance
D．the transmissibility of images, sounds and messages for distances
单项选择题
Brooding and hopelessness are the ______ of Indians in the prairie reservations most of the time.
A．occupations
B．promises
C．frustrations
D．transactions
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