单项选择题

A. The wheels of the shoes are easy to fall off.
B. The sharp wheel blade of the shoes may hurt others.
C. Teenagers may get out of controls when using them.
D. Teenagers may cause accidents when using them.
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单项选择题
A. Reduce industry pollution. B. Never use cosmetics. C. Go on ecotourism.D. Forbid synthetic products.
A. Reduce industry pollution.
B. Never use cosmetics.
C. Go on ecotourism.
D. Forbid synthetic products.
单项选择题
A. It makes the house dangerous. B. It costs more to heat the house. C. It makes the house look ugly. D. It costs lots of time to clean it.
A. It makes the house dangerous.
B. It costs more to heat the house.
C. It makes the house look ugly.
D. It costs lots of time to clean it.
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