单项选择题

A．Bacteria can help control some pollution problems.
B．Bacteria can eat gasoline in the sea.
C．Bacteria can excrete (排泄) hydrogen and oxygen.
D．He thought bacteria just caused illness.
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单项选择题
A．T-shirts feel soft and wash well.B．T-shirts are smart and comfortable.C．T-shirts go well with trousers.D．T-shirts are suitable for evening wear.
A．T-shirts feel soft and wash well.
B．T-shirts are smart and comfortable.
C．T-shirts go well with trousers.
D．T-shirts are suitable for evening wear.
单项选择题
A．A message from the outside world.B．A symbol of misfortune.C．A warning from the gods.D．A gift from the gods.
A．A message from the outside world.
B．A symbol of misfortune.
C．A warning from the gods.
D．A gift from the gods.
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