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A
B
C
D
A
B
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D
A
B
C
D
Rate this question:
A
B
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D
A
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40°
80°
100°
140°
Rate this question:
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B
C
D
A
B
C
D
A
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D
Rate this question:
A. 20
B. 25
C. 50
D. 75
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