问题描述：
- - - a bike is too much for a little boy to carry.
- - - a bike is too much for a little boy to carry.
A：The weight of a bike B：A bike's weight C：The weights of a bike D：Bike's weight
- - - a bike is too much for a little boy to carry.
A：The weight of a bike B：A bike's weight C：The weights of a bike D：Bike's weight
问题解答：
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