单项选择题

The Space Age （） in October 1957 when the first artificial satellite was launched by the Soviet Union.

A．initiated
B．originated
C．embarked
D．commenced

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单项选择题
Julia Roberts lives in Manhattan, not far from the apartment she once shared with her sister in Greenwich Village.（）

A．fragment
B．comma splice
C．correct
D．run on
单项选择题
When Julia was four years old, her parents divorced. After eighteen years of marriage.（）

A．fragment
B．run on
C．choppy
D．correct
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