Why did Boost ask Macasso to paint a picture on the canvas？
A. To cover the original one.
B. To make it more valuable.
C. To change it from classic to modern piece.
D. To describe what London gas-works look like.
What do officials do during the game of football？
A. Watch the game.
B. Take up tickets.
C. Make sure the rules are followed.
D. Kick the ball.
Why do players need protective equipment during the game？
A. To make their uniforms fit.
B. To keep the body safe.
C. To see the ball.
D. To make touchdowns.
厂商推行价格歧视的动机是()
A. 满足消费者的需求
B. 提高社会福利
C. 获得更多的利润
D. 动机不明确
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