单项选择题

A．It’s being drained from Nebraska to Texas.
B．It’s being pumped out.
C．It’s becoming contaminated with oil.
D．It’s becoming much warmer.
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单项选择题
A．How sea animals manage to exist. B．How large sea animals can be. C．How frightening the squid is. D．How little is known about the sea.
A．How sea animals manage to exist.
B．How large sea animals can be.
C．How frightening the squid is.
D．How little is known about the sea.
单项选择题
A．To chat with him socially. B．To get help with the course. C．To hand in their assignments. D．To practise giving interviews.
A．To chat with him socially.
B．To get help with the course.
C．To hand in their assignments.
D．To practise giving interviews.
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