单项选择题

A．0.3
B．0.5
C．0.6
D．0.8
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单项选择题
A．displacement of peopleB．transit stoppageC．serious injuriesD．airport delays
A．displacement of people
B．transit stoppage
C．serious injuries
D．airport delays
单项选择题
The principal subject discussed in this passage is ______.
A．the bleak future for the oceans
B．the resources in the oceans
C．the environmental damage to the oceans
D．the climatic changes caused by ocean currents
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