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【单选题】
● 在绘制数据流图时，应遵循父图与子图的原则，所谓是指（）。（）A.
父图和子图都不得改变数据流的性质
B.
子图不改变父图数据流的一致性
C.
父图的输入／输出数据流与子图的输入／输出数据流一致
D.
子图的输出数据流完全由父图的输入数据流确定
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【简答题】O o long Tea
【单选题】How did the residents in the Vrain School District respond to the budget shortage?
A.
They felt somewhat helpless about it.
B.
They accused those responsible for it.
C.
They pooled their efforts to help solve it.
D.
They demanded a through investigation.
【单选题】How did the teenagers feel after rescuing the kangaroo?
A.
They were delighted and proud .
B.
They were worn-out but excited .
C.
They were worried about the kangaroo .
D.
They were uncomfortable with the attention .
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