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1. |
What is the reason that the ball bounces higher at a higher place? |
A. | Because the air pressure is higher at higher places than at the plains |
B. | Because the atmosphere is sparse at high places, the ball faces less resistance |
C. | Because the force of gravity is low at high places |
D. | Because the atmosphere is pure at high places |
Answer» D. Because the atmosphere is pure at high places | |