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【单选题】
There are five people in the room, but I know . [ ]A.
both of them
B.
none of them
C.
all of them
D.
neither of them
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举一反三
【单选题】From the information he gives about himself, it seems that the writer ______.
A.
suffers from a physical deformity
B.
has had all his teeth removed
C.
has some trouble with his eyesight
D.
never gets up in the morning
【单选题】液体内装物充填方法按原理可分 重力灌装、 等压灌装 、真空灌装和机械压力灌装 ,其中汽水、啤酒等液体适用于 。
A.
． 重力灌装 ；
B.
．等压灌装；
C.
． 真空灌装 ；
D.
． 机械压力灌装 。
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