单项选择题

A．work in
B．work out
C．work over
D．work off
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单项选择题
What topic are the man and woman discussing
A．Mating habits of squid and octopus.
B．The evolution of certain forms of sea life.
C．The study of marine shells.
D．Survival skills of sea creatures.
单项选择题
A．offerB．affordC．awardD．reward
A．offer
B．afford
C．award
D．reward
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