B__ solving it we can learn something new and important前一句是In fact it is a chance to learn something new.填一下这个空,就根据这两句话,

问题描述:

B__ solving it we can learn something new and important
前一句是In fact it is a chance to learn something new.
填一下这个空,就根据这两句话,

by通过解决它我们可以.......

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