单项选择题

According to American federal government, residents of Hawaii have the longest life ______: 77.2 years.

A．rank
B．scale
C．span
D．scope
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单项选择题
The new arrival was ______ the famous scientist.
A．none but
B．nothing but
C．none other than
D．nothing other than
单项选择题
Probability is the mathematical study of the ______ of an event's occurrence.
A．predictability
B．possibility
C．feasibility
D．undeniability
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