单项选择题

A. Some sea creatures developed vertebrae.
B. The first giant squid was captured.
C. Some sea creatures shed their shells.
D. Sea life became more intelligent.
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单项选择题
A. Invest into a mutual fund. B. Use the discount tickets. C. Quit his eating-out habit. D. Use only paper bills and save coins.
A. Invest into a mutual fund. B. Use the discount tickets.
C. Quit his eating-out habit. D. Use only paper bills and save coins.
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developed
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