单项选择题

A．A disease.
B．A cause of fatal plague.
C．A substance in a flea’s legs.
D．The substance that a flea lives on.
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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 off 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 off many different kinds of hosts.
D．They can survive without eating for many months.
单项选择题
A．Eat a bigger breakfast.B．Make time for lunch in her schedule.C．Take only morning classes next semester,D．Change her schedule after she eats lunch.
A．Eat a bigger breakfast.
B．Make time for lunch in her schedule.
C．Take only morning classes next semester,
D．Change her schedule after she eats lunch.
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