单项选择题

The scientist from the French space agency did all the following things except ______.

A．taking further photos
B．taking soil samples
C．planting vegetation in the soil
D．taking samples of vegetation
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单项选择题
In the case that occurred in France in 1981, how many people witnessed it
A．One.
B．Two.
C．Three.
D．Five.
单项选择题
Which of the following had the title the Wizard of Menlo Park
A．Thomas Alva Edison.
B．John Stevens.
C．Charlie Chaplin.
D．Robert Fulton.
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