Dr．Frank failed many times but he finally _______ to find a successful way to solve the problem．_刷题宝

题干

Dr．Frank failed many times but he finally _______ to find a successful way to solve the problem．

A：broke off

B：broke u

C：broke dow

D：broke through

上一题下一题 0.0难度选择题更新时间:2019-01-17 12:10:06

答案(点此获取答案解析）

D

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