单项选择题

The United States (has sent) several (spacecrafts) into orbits (around the earth) and has collected a lot of (information).

A．has sent
B．spacecrafts
C．around the earth
D．information
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单项选择题
According to the (literature) in this field, expert (evidences) originally (appeared) in England, and later (got widen used) in the Commonwealth countries.
A．literature
B．evidences
C．appeared
D．got widen used
单项选择题
Sichuan University has not only (a variety of) departments (but) a large (student body) (consisting in) many people from different countries all over the world.
A．a variety of
B．but
C．student body
D．consisting in
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