单项选择题


Questions 26 to 28 are based on the passage you have just heard.

A．People without exposure to sunlight.
B．Wealthy people in Europe centuries ago.
C．Workers during the Industrial Revolution.
D．Wealthy people during the Industrial Revolution.
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单项选择题
A．They can live in meadows.B．They can jump high to get food.C．They can live on many different kinds of hosts.D．They can survive without eating for many months.
A．They can live in meadows.
B．They can jump high to get food.
C．They can live on many different kinds of hosts.
D．They can survive without eating for many months.
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