单项选择题

Which of the following would NOT cause a sea cucumber to release its internal organs into the water

A．A touch.
B．Food.
C．Unusually warm water
D．Pollution.
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单项选择题
The fourth paragraph of the passage primarily discusses ______.
A．the reproduction of sea cucumbers
B．the food sources of sea cucumbers
C．the eating habits of sea cucumbers
D．threats to sea cucumbers' existence
单项选择题
It was requested that all of the equipment ______ in the agreed time.
A．erected
B．would be erected
C．be erected
D．will be erected
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