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题型:单选题 题类:常考题 难易度:普通

天津市第一中学2020届高三上学期英语第二次月考试卷

China's Chang'e 4 robotic probe entered lunar orbit on Wednesday, ________ a major step in its mission to make a soft landing on the moon's far side.
A、marking B、to mark C、having marked D、marked
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