单项选择题

By launching Corona, American hoped ______.

A．to obtain some useful photos they needed urgently
B．to find out what was happening within the Soviet Union
C．to avoid the political conflict with the Soviet Union
D．to face the challenge provoked by the Soviet Union

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单项选择题

According to the passage, Corona is ______.

A．the first in a long series of satellites for development
B．an orbiting satellite for photo-reconnaissance
C．one satellite which launched 95 other satellites
D．a missile against the Soviet Union

单项选择题

Which of the statements about the accomplishments of Corona is NOT true

A．It detected the early indications that China would explode their hydrogen bomb.
B．It outlined the extent of Israeli successes during the 1967 Middle East war.
C．It photographed all of the Soviet's medium-and intermediate-range missiles.
D．It identified the entire Soviet anti-ballistic missile network.