The phrase "to shore up" in the second paragraph probably means ______.

A．The new challenge men are facing in modern society.
B．The reasons for men's feeling that they are not superior.
C．The role men are playing in the new situation.
D．The contribution of new conditions to men's weakened position.

A．any real estate agent should use digital still camera
B．digital still camera should be used together with Internet Web
C．digital age is gaining momentum
D．house dealing can be made easier