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.
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单项选择题
______ ,he is ready to accept suggestions from different sources.
A．Instead of his contributions
B．For all his notable contributions
C．However his notable contributions
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It was recommended that passengers ______ smoke during the flight.
A．not
B．need not
C．could not
D．would not
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