单项选择题

NASA plans to design the new space craft to ______

A．control the International Space Station.
B．carry astronauts to the International Space Station.
C．transport equipment to the International Space Station
D．train astronauts in space flights.

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单项选择题

When did NASA start working on a successor to the shuttle

A．One year before the Columbia disaster.
B．One year after the Columbia disaster.
C．Immediately after the Columbia disaster.
D．Years before the Columbia disaster.

单项选择题

According to the passage, the 1 billion funds, if granted, would ______

A．be used to rebuild the International Space Station.
B．be awarded to the scientists working at NASA.
C．be shared by the two projects under the Space Launch Initiative.
D．be spent on the investigation of the Columbia disaster.