____ from space, our earth, with water covering 70% of its surface, appears as a "blue planet".

A．Many countries are trying to reduce the cost of making coins.
B．These days a penny made is a penny wasted.
C．There is disagreement over whether the U.S. should stop using pennies.
D．Many countries have stopped using pennies.

A．as twice much
B．twice as much
C．much as twice
D．as much twice