单选题
Industry has great influence on every aspect of the
people in the world. The industrial societies have been extremely productive
during the last two centuries. The economic advance has been{{U}} {{U}}
1 {{/U}} {{/U}}. People have noticed that during this{{U}} {{U}}
2 {{/U}} {{/U}}short period of time, greater changes in
people's{{U}} {{U}} 3 {{/U}} {{/U}}have occurred than in the
thousands of years which{{U}} {{U}} 4 {{/U}} {{/U}}.
From about 8000 B. C. ,when the agricultural{{U}} {{U}} 5
{{/U}} {{/U}}of the human race began in 1776 A. D. , the beginning of the
American Revolution, people{{U}} {{U}} 6 {{/U}} {{/U}}hardly any
richer at all. The Americans of 1776 used the same energy{{U}} {{U}}
7 {{/U}} {{/U}}as the Romans of I A. D. Both the ancient Romans and
Americans of 200 years ago could travel about the same short{{U}} {{U}}
8 {{/U}} {{/U}}in a day. Both had about the same an num income and the
same life{{U}} {{U}} 9 {{/U}} {{/U}}. During
the past 200 years the world population has increased 6 times, the annual
world{{U}} {{U}} 10 {{/U}} {{/U}}has increase 80 times, and the
distance a person can travel has{{U}} {{U}} 11 {{/U}} {{/U}}up
1,000 times. There has al so been much recent progress{{U}} {{U}}
12 {{/U}} {{/U}}art, culture, learning land science. Such changes
have{{U}} {{U}} 13 {{/U}} {{/U}}to a high rate of production
and{{U}} {{U}} 14 {{/U}} {{/U}}of the economy.
Within the next 100 to 150 years, the earth's resources, economists{{U}}
{{U}} 15 {{/U}} {{/U}},will become very{{U}} {{U}} 16
{{/U}} {{/U}}. Their fears are partly{{U}} {{U}} 17 {{/U}}
{{/U}}, but we Should not be afraid. Industrial civilization{{U}} {{U}}
18 {{/U}} {{/U}}to new knowledge, we not only{{U}} {{U}}
19 {{/U}} {{/U}}new forms of resources, but we also find ways
to{{U}} {{U}} 20 {{/U}} {{/U}}their use. Advances modem
knowledge can feed the hungry people of the world and improve their standard of
living.