单项选择题

A．Categorizing the different kinds of sharks.
B．Warning humans of the dangers posed by sharks.
C．Describing the characteristics of shark teeth.
D．Clearing up some misconceptions about sharks.
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单项选择题
A．One may not be treated in case of an unexpected medical emergency.B．One may get into financial trouble because of an unexpected medical emergency.C．One may pay more for his schooling.D．One may get some financial support from some companies.
A．One may not be treated in case of an unexpected medical emergency.
B．One may get into financial trouble because of an unexpected medical emergency.
C．One may pay more for his schooling.
D．One may get some financial support from some companies.
单项选择题
A．Because their homes are too far from their companies.B．Because they are not allowed to leave the office.C．Because they don’t want to cook by themselvesD．Because they have other arrangements during the lunch time.
A．Because their homes are too far from their companies.
B．Because they are not allowed to leave the office.
C．Because they don’t want to cook by themselves
D．Because they have other arrangements during the lunch time.
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