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【判断题】
操作系统是管理计算机系统资源、控制程序执行、改善人机交互界面和为应用软件提供支持的一种系统软件A.
正确
B.
错误
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举一反三
【单选题】—Do you know _____? —Yes, I do, she came here on foot. [ ]
A.
where Lucy came from
B.
how Lucy came here
C.
where did Lucy come from
D.
how did Lucy come here
【单选题】— Do you remember ____________ he came? — Yes, I do, he came by car.
A.
how
B.
when
C.
that
D.
if
【简答题】衣冠是——和——的合称,是文明时代的产物。
【单选题】--Do you remember ____ he came? --Yes, I do.He came by car.
A.
when
B.
if
C.
how
D.
that
【单选题】How do water molecules move as surface waves propagate?
A.
They move in circles
B.
They move up and down
C.
They are carried by the wave
D.
They do not move
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