Question

THE WATER WE DRINK
The water we drink usually comes from
reservoirs, lakes or rivers. A large number of cities
uses river water and dumps it back into the river.
Sometimes another city downstream uses the same
water. This water may be badly polluted with the
chemicals and pathogenic bacteria. Many different
chemical treatments are necessary to make it safe and
palatable.
Many communities add some form of fluorine to
their water. Fluorine in concentrations of 0.7 to 1.0
ppm (parts per million) can significantly reduce tooth
decay in children.
Smaller communities usually obtain water from
wells. Even they have problems because sometimes
the ground water is contaminated by nitrates. These
nitrates come from agricultural fertilizers and form the
decomposition of organic waste.
What can we do? We can fight for clear water
and convince our neighbors to do the same. We can
demand an end to water pollution by industries and
cities. And finally, we must know how to use the water
of the earth because that is all water we have.
Martins, E.P.; Pasqualin, E.; Amos, E. Graded English. Editora
Moderna, 1993, p. 69)

1. Choose the correct alternative
According to the text, many communities add:
(A) Fluorine to their water.
(B) Fertilizers to their water.
(C) Organic waste to their water.
(D) Nitrates to their water.

2. Mark (T) true or (F) false.
( ) Nitrates pollute the water.
( ) People dump purifies water into the river.
( ) We drink water from reservoirs.
( ) Fertilizers purify the water.
( ) We can't drink safe water.
The correct sequence is:
(A) F – T – F – F – F
(B) T – F – T – F – F
(C) T – F – T – F – T
(D) T – F – T – T – T

3. The correct synonyms of “add”, “polluted”, “dump”,
“dump back” and “obtain” are respectively:
(A) calculate – contaminated – drop – revert – acquire
(B) displace – foul – remove – place – get
(C) put – contaminated – throw – return – get
(D) put – foul – discard – throw – get

4. The is about:
(A) Fertilizers;
(B) Small communities;
(C) rivers and walls
(D) water

Answer 1

1. a)

2. c)

3. c)

4. d)