1  2  3 

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2  _  _  _

3  _  _  _


ACROSS
1)  a small cube with 1 to 6 spots on the six faces; used in gambling to generate random numbers
2)  engage in
3)  a female person who has the same parents as another person


DOWN
1)  a doctor's degree in dental surgery
2)  the cardinal number that is the sum of one and one and one
3)  a rapid automatic system to detect plastic explosives in passengers' luggage using x-ray technology and computers; designed for use in airports

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did
sis