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Choose the best answer from the options
A, B, C and D. |
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Although three quarters of the world is covered with water, many
parts of the world face acute shortages of drinking water. Most
of the water in the world ___1___
salt water, which is far too saline for human ___2___.
The little 'fresh' water that remains is mostly ___3___
in polar ice caps where it is difficult to ___4___
for use. The rest of the natural supply of ___5___
water faces stress from a growing world population ___6___
risks of biological and industrial contamination.
The good ___7___ is that
technology now is allowing people to take ___8___
control of their own water quality with water treatment systems,
which can ___9___ almost all
biological and chemical contaminants as well as unpleasant
tastes, colors and ___10___.
There are many effective technologies used to provide water
treatment ___11___, and no
single technology is effective for treating all ___12___
the possible contaminants. A specific technology or ___13___
of technologies is usually applied to treat the specific problem
___14___. These technologies
___15___ activated carbon filters, activated alumin, anion and
carbon exchange, chlorination, ozone, ultraviolet light,
distillation and reverse osmosis. |
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1. |
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(A) |
is
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9. |
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(A) |
end |
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(B) |
are |
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(B) |
stop |
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(C) |
was |
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(C) |
halt |
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(D) |
were |
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(D) |
eliminate
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2. |
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(A) |
consume |
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10. |
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(A) |
smelly |
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(B) |
consumed |
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(B) |
odors
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(C) |
consuming |
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(C) |
stinking |
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(D) |
consumption
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(D) |
fragrances |
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3. |
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(A) |
lost |
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11. |
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(A) |
answers |
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(B) |
trapped
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(B) |
solutions
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(C) |
hidden |
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(C) |
problems |
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(D) |
resting |
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(D) |
methods |
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4. |
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(A) |
explore |
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12. |
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(A) |
-- |
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(B) |
exploit |
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(B) |
in |
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(C) |
obtain
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(C) |
of
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(D) |
harvest |
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(D) |
at |
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5. |
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(A) |
pot |
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13. |
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(A) |
combination
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(B) |
potted |
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(B) |
combining |
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(C) |
portable |
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(C) |
combined |
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(D) |
potable
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(D) |
combine |
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6. |
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(A) |
but |
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14. |
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(A) |
at hand
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(B) |
and
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(B) |
in hand |
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(C) |
or |
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(C) |
on hand |
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(D) |
for |
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(D) |
for hand |
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7. |
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(A) |
information |
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15. |
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(A) |
for example |
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(B) |
notice |
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(B) |
such as |
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(C) |
sign |
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(C) |
example |
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(D) |
news
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(D) |
include
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8. |
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(A) |
increased
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(B) |
expanded |
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(C) |
broadened |
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(D) |
widened |
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Sponsored Links
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Answers : 1A
2D 3B 4C
5D 6B 7D
8A 9D 10B
11B 12C 13A
14A 15D |
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