【单选题】When we turn on a tap to get water, or press a switch to get electricity, we do not think of all the pipes and wires which bring these main services to our homes. The water is brought from the waterwo...
A.
water and electricity are the only main services in our homes
B.
the pipes bringing water to our homes are unimportant
C.
water is less significant than electricity in our homes
D.
we are unaware of how water or electricity is brought to our homes