单项选择题

Five children ______ before firefighters could put out the blaze.

A．pondered
B．perished
C．petitioned
D．permeated

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单项选择题

Political power has been placed in the hands of the ______.

A．multitude
B．magnitude
C．latitude
D．gratitude

单项选择题

What is required of AI software to save a life

A．It must be able to swim.
B．It must keep walking round the pool.
C．It can distinguish between a swimmer and a shadow.
D．It can save a life within a few months.

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