A. ENCOURAGE B. FORCE C. DISCOURAGE D. RECOMMEND(76-80). READ THE...
75. a. encourage b. force
c. discourage
d. recommend
(76-80). Read the passage below carefully and choose the correct answer a, b, c or d.
Scientists believe that something very serious is happening to the Earth. It is becoming
warmer. Scientists predict that there will be major changes in the climate during the
21st century. Coastal water will have higher temperatures. This will have a serious affect
on agriculture. Farmer will have trouble producing good crops. In warm regions the
weather will be too dry. The amount of water could decrease by 50 percent. This would
cause a large decrease in agricultural production.
World temperature could increase from 1.5 to 5.6 degrees Celsius by the middle of the
21st century. And the increase in, temperature could be even greater in the Arctic and
Antarctic regions. A rise in temperature could cause the great ice sheets to melt, which, in
turn would raise the level of the oceans by one to two meters. Many coastal cities would
be underwater. Why is all this happening?
The Earth and its atmosphere are kept warm by the Sun. The atmosphere lets most of the
light from the Sun pass through to warm the Earth. The Earth is warmed by the sunlight
and sends heat energy back into the atmosphere. Much of this energy escapes from the
Earth’s atmosphere. However, some of it remains. Gases such as carbon dioxide, ozone
and water vapor absorb this energy and create more heat. Then this heat is sent back
down to Earth, and the Earth becomes warmer.