单项选择题

When the spacecraft was going to land,_______.

A．it produced a lot of noise.
B．there were scattered showers.
C．people could see it high in the sky.
D．people could neither see nor hear it.

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单项选择题

单项选择题

When the spacecraft was going to land,_______. 您的浏览器不支持 audio 元素。