在职研究生英语（一）
阅读短文，选出填入空格最合适的一项： Thousands of broken s…
第 4 题单选题模拟题较易
阅读短文，选出填入空格最合适的一项：
Thousands of broken satellites and rocket parts now circle the Earth. Engineers have proposed nets, magnets and even lasers to clear them away, but no one has yet ___ a method that is both safe and affordable.
完形填空解题步骤首句定调