单项选择题

What does the underlined word "it" in the second paragraph refer to

A．Discovering the moon's inner space.
B．Using the earth's inner space.
C．Meeting the "moon people".
D．Traveling to outer space.
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单项选择题
This article mainly tells about the story of______.
A．a lost diary
B．Deborah Logan
C．Cory Luxmoore
D．the Library Company
单项选择题
The explorers in H. G. Wells's story were surprised to find that the moon people
A．knew so much about the earth
B．understood their language
C．lived in so many underground cities
D．were ahead of them in space technology
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