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
As a ______ actor, he can perform, sing, dance and play several kinds of musical instruments.
A．flexible
B．versatile
C．sophisticated
D．productive
单项选择题
He is holding a ______ position in the company and expects to be promoted soon.
A．subordinate
B．succeeding
C．successive
D．subsequent
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