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．It is a city. built in the mountains.B．It has the world-famous bridge.C．Visiting the city is not so easy.D．It has no bus service.
A．It is a city. built in the mountains.
B．It has the world-famous bridge.
C．Visiting the city is not so easy.
D．It has no bus service.
单项选择题
A．In the library.B．In an auditorium.C．On the campus grounds.D．In the greenhouse of the biology building.
A．In the library.
B．In an auditorium.
C．On the campus grounds.
D．In the greenhouse of the biology building.
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