单项选择题

A．The lack of air pressure.
B．The extremely hot or cold temperature.
C．Exposure to radiation.
D．An inadequately ventilated space suit.
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单项选择题
A．Oranges. B．Milk. C．Tomatoes. D．Bread.
A．Oranges.
B．Milk.
C．Tomatoes.
D．Bread.
单项选择题
A．In the third room on the right. B．In the Common Room. C．In a room at this end. D．In Room 501.
A．In the third room on the right.
B．In the Common Room.
C．In a room at this end.
D．In Room 501.
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