Read the text below. Match choices (A-H) to (1-5). There are three
choices you do not need to use.
1. Acid rain moves easily, affecting locations far beyond those that let out the
pollution. As a result, this global pollution issue causes great debates between
countries that fight over polluting each other's environments. The problem is that
acid rain, one of the most important environmental problems of all, cannot be seen.
Some scientists think that human production is primarily responsible, while others
cite natural causes as well.
2. Air pollution has many disastrous effects that need to be curbed. In order to
accomplish this, governments, scientists and environmentalists are using or testing
a variety of methods aimed at reducing pollution. There are two main types of
pollution control. Input controls are usually more effective than output controls.
Output controls are also more expensive, making them less desirable to tax payers
and polluting industries.
3. Global warming is called the greenhouse effect because the gases that are
gathering above the Earth make the planet comparable to a greenhouse. By
trapping heat, the greenhouse effect is warming the planet and threatening the
environment. Current fears stem largely from the fact that global warming is
occurring at such a rapid pace. Models are predicting that over the next century,
the global temperature will rise by several degrees.
4. Individuals often throw out goods without realizing that they could be dangerous
for the environment. No matter where people put these materials, there is always a
chance that they could find their way into the ground, and eventually into our
bodies. Special research is necessary to provide data on the effects of every
chemical as well as to learn how combinations of these chemicals affect human
health.
5. Only a few factors combine to create the problem of ozone layer depletion. The
production and emission of CFCs, chloroiluorocarbons, is by far the leading cause.
Many countries have called for the end of CFC production. However, those
industries that do use CFCs do not want to discontinue usage of this highly
valuable undustrial chemical. So, it’s important to make people realize the disaster
CFCs cause in the stratosphere.

A Hazardous Waste
B Invisible Threat
C Primary Reason
D Possible Solution
E Global Destruction
F Disastrous Growth
G Water Shortage
H Quick Change