epdf.pub_cbest-cliffs-test-prep13a9b242c7cb4125e6cca92d00a73d5a41681

PRACTICE TEST 4
The total testing time is 4 hours. You may work on any section of the exam during this time
period.
Section I: Reading — 50 Questions
Section II: Mathematics — 50 Questions
Section III: Writing — 2 Essays
Section I: Reading
50 Questions
Directions: A question or number of questions follows each of the statements or passages in
this section. Using only the stated or implied information given in the statement or passage, answer
the question or questions by choosing the best answer from among the five choices given.
Make sure to mark your answers for this section on the Reading section of the answer sheet.
Read the passage below and answer the
two questions that follow.
The concentration of harmful ozone pollution
in the lower atmosphere has more than
doubled in the last hundred years, and it will
likely rise at an even faster rate in the next
30 years, researchers claim. Recent measurements
of ground-level ozone indicate that
levels of the gas are, on the average, twice as
high as recorded by French researchers in
Paris in the late 1800s.
Ozone is not emitted directly into the air, but
is formed through complex reactions with nitrogen
oxide and other chemicals found in
automobile and industrial emissions containing
nitrogen oxide. When it is in the upper
atmosphere, ozone shields Earth from the
sun’s ultraviolet rays, which can cause skin
cancer and other health problems. But when
found near ground level, the highly corrosive
form of oxygen can cause respiratory
distress.
Based on projected increases in nitrogen oxide
emissions, researchers and their computer
simulations show that between now
and 2020, concentrations of ground-level, or
“tropospheric,” ozone will rise “at a rate
faster than during the past hundred years.” In
fact, the increase in tropospheric ozone during
the next 30 years could equal that for the
entire last century.
1. The predicted increase in tropospheric
ozone will not result in a decrease in
skin cancers because
A. ozone in the upper atmosphere
cannot protect against the harmful
rays of the sun.
B. tropospheric ozone can cause
respiratory diseases.
C. ozone is not emitted into the air
directly.
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