The thins brought down by rivers from the mountains that are useful for cultivation are（）.

A．moved less water than pure gold of the same size
B．moved more water than pure gold of the same weight
C．moved more water than pure gold of the same size
D．moved less water than pure gold of the same weight

A. sooner or later
B. pro or con
C. now and then
D. To take dancing lessons
E. Put him in prison
F. here and there
G. when will I get out of jail
H. Very much