Several minutes after its launch, the X-37B plane successfully sent back its first___________to the control center.A．markB．signC．instructionD．signal-高中英语-n多题

◎ 题干

Several minutes after its launch, the X-37B plane successfully sent back its first___________to the control center.

A．mark

B．sign

C．instruction

D．signal

◎ 答案

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◎ 解析

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◎ 知识点

根据n多题专家分析，试题“Several minutes after its launch, the X-37B plane successfully sent back its first___________to the control center.A．markB．signC．instructionD．signal…”主要考查了你对【可数名词及其单复数】，【集合名词】，【名词】等知识点的理解和应用能力。关于这些知识点的“档案”，你可以点击相应的链接进行查看和学习。

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