单项选择题

What is the distance between the Earth and the two areas of radiation

A．Between 12 and 21 miles
B．1,000 miles
C．150 miles
D．1,500 miles
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How many people died in last month’s riot
A．2.
B．41.
C．17.
D．18.
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Why does the woman have a problem
A．She is taking too many classes.
B．She lives too lar from her family.
C．She made an error when she scheduled her trip.
D．She did not do well on her final exam.
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