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【判断题】
现在常用的 U 盘中使用的存储器是随机存储器的一种,它的最大特点是断电后信息不丢失。A.
正确
B.
错误
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举一反三
【单选题】Scientists have many theories about how the universe_____.
A.
came into being
B.
was coming into being
C.
had come into being
D.
would come into being
【单选题】Scientists have many theories about how the universe ____ into being 21
A.
came
B.
was coming
C.
had come
D.
would come 21
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