填空题
The world is running out of oil, and energy experts believe
that there could be serious shortages in ten years’ time. Not
only is each individual using more oil than ever before, as the
standard of living in industrial countries arises, but the 62. ______
population explosion means that each year many more people will
be using oil in some form or other. Until recently we took oil
as granted: it seemed it would never stop flowing. It was so 63. ______
cheap and plentiful that the whole world came to depending on 64. ______
it. Governments neglected other sources of energy. Electricity
was generated from oil and power stations were fired by it.
It found its way into much of the products of light industry. 65. ______
Many people are surprising when they learn how many items 66. ______
in their homes contain oil. The increase in the price of oil has
brought the world to its senses. Governments are searching 67. ______
a suitable alternate, but so far in vain. They are considering 68. ______
how they can make better use of the two other major fuels,
coal and natural gas, but they have found that neither can take place 69. ______
of oil in their economies. In recent years there has been a
growing concern for the environment, and coal is a popular fuel 70. ______
with environmentalists. Coal mines are ugly, and their development
has a serious effect on animal and plant life;
coal itself is a heavy pollution. 70. ______