单项选择题

During an autopsy, （） was taken from Arthur Allen.

A．DNA
B．blood
C．brain tissue
D．strands of hair

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单项选择题
The 33-year-old case has had more than （）

A．250 suspects and tips
B．2,050 tips
C．2,500 tips and suspects
D．25,000 calls and letters
单项选择题
Which of the following majors has the best job prospects, according to the story（）

A．Information systems management.
B．Accounting.
C．Computer science.
D．Teachin
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