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【单选题】
下面关于操作系统的描述中，错误的是（ ）。A.
DOS 是单用户多任务操作系统
B.
Windows 8 是单用户多任务操作系统
C.
Linux 是多用户多任务操作系统
D.
Unix 是多用户多任务操作系统
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反馈参考答案：
举一反三
【单选题】模拟题 NR 1.mp4 Question 2 is based on a news report you have just heard.
A.
They couldn't get government support.
B.
They couldn't last long.
C.
They couldn't control the pollution level.
D.
They cost too much money.
【单选题】模拟题1 NR2.mp4
A.
Latino immigrants.
B.
Elder people
C.
Asian immigrants.
D.
College graduates.
【单选题】—My whole body feels weak and I've got a headache. — ( )?
A.
How long ago did you get it this
B.
How long have you been like this
C.
How soon have you got it
D.
How soon have you liked this
【单选题】模拟题 NR 1.mp4 Question 1 is based on the news report you have just heard.
A.
New measures to curb air pollution
B.
New discounts on public transport.
C.
Restrictions on traffic and speed.
D.
Replacing polluting vehicles
【简答题】My whole body _______ 疼痛
【单选题】模拟题 NR 1.mp4 今日事,今日毕。各位小朋友按时提交作业哟! Questions 1 and 2 are based on News Report 1.
A.
New measures to curb air pollution.
B.
New discounts on public transport.
C.
Restrictions on traffic and speed.
D.
Replacing pollution vehicles.
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