单项选择题

Modern medical advances _________ the average life expectancy by several years.

A．expanded
B．spread
C．extended
D．enlarged
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_________ equal educational advantages, there will be no difference in average standings, either on account of race or geographical location.
A．Provided
B．Concerning
C．Given
D．Following
单项选择题
You don't object _________ you by your first name, do you
A．to my calling
B．for calling
C．that I am calling
D．that I call
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