52单词网 > 高中英语 > 高中英语题库 > Scientists have made a great in the treatment of cancer. A．principle B．breakthro

Scientists have made a great in the treatment of cancer. A．principle B．breakthro

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Scientists have made a great in the treatment of cancer. A．principle B．breakthro

Scientists have made a great          in the treatment of cancer.

       A．principle                 B．breakthrough       C．conclusion           D．introduction

试题答案

B

标签：greatinthescientistshave

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