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单选题
When the astronauts are working, sleeping bags are fastened _____.
A
on the wall
B
to their seats
C
onto the flight deck
D
anywhere they like
参考答案
参考解析
解析：
细节题。定位到短文的第一段第二句“we leave the bags tied to the wall”，我们把睡袋系在墙上。fasten是对定位句中tie的同义转述。B、C、D项在文中均没有提到。
细节题。定位到短文的第一段第二句“we leave the bags tied to the wall”，我们把睡袋系在墙上。fasten是对定位句中tie的同义转述。B、C、D项在文中均没有提到。
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