题目内容

证券资产不能脱离实体资产而独立存在，因此，证券资产的价值取决于实体资产的现实经营活动所带来的现金流量。( )

A. 对
B. 错

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The engineers spent the whole night (work) ______ on the new device.

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The people injured in the accident (send) ______ to the nearest hospital for treatment last night.

9（）

A. Two weeks.
B. Three weeks.
C. Twenty days.
D. Thirty days.