单项选择题

Questions 11 to 18 are based on the conversation you have just heard.

A．The flight has been canceled.
B．The plane is late.
C．The plane is on time.
D．The tickets for this flight have been sold out.

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填空题

After returning from her flight, Chiaki Mukai had difficulty in adjusting to the gravity on the earth.

填空题

Being in a situation of weightlessness will help mankind further understand ______.

Questions 11 to 18 are based on the conversation you have just heard. 您的浏览器不支持 audio 元素。