摘要：33．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
网址：http://m.1010jiajiao.com/timu_id_3484556[举报]
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
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
查看习题详情和答案>>
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 |