此题要求改正所给短文中的错误。对标有题号的每一行做出判断：如无错误，在该行右边横线上画一个勾(√)；如有错误(每行只有一个错误)，请改正：
First the
population is increased, and more gas
56. __________
and
other fuels are used. Second, the United States
57.
__________
is
not completely developing all it energy sources.
58. __________
For
example, the use of coal has been limited
because
of coal burning causes pollution. The third reason for 59.
__________
the
energy problem is America’s
dependence in oil
60.
__________
from
other countries. If these countries refuse to sell its 61.
__________
oil,
all American feel the efforts. But probably the most
important
reason for the energy problem is which
62.
_________
the
United States has no acceptable alternative(更替的) 63. _________
sources
of energy. Both solar power and nuclear power
are
possibilities, but solar power is not complete
64.__________
developed
yet, because many people feel that nuclear
65.
__________
power
is dangerous.
