单项选择题

Which of the following can be the best title of the article

A．New mission—repairing the International Space Station
B．Second spacewalk ends after mishaps
C．New crew to inhabit the station
D．Endeavours' new flight

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单项选择题

It can be inferred from the text that_____.

A．the main aim of the spacewalk was not accomplished
B．the final repairing work depends on future
C．the spacewalk cost much
D．repairing work has finished

单项选择题

What is crucial to the future work on the construction site in space

A．The arms.
B．The robot.
C．The robotic arm-to the station.
D．The shuttle.