PRACTICE: Stated & Unstated Detail Questions

Text 1
Carbon tetrachloride is a colorless and inflammable liquid that can be produced by combining carbon disulphide
and chlorine. This compound is widely used in industry today because of its effectiveness as a solvent as well as its use in
the production of propellants.
Despite its widespread use in industry, carbon tetrachloride has been banned for home use. In the past, carbon
tetrachloride was a common ingredient in cleaning compounds that were used throughout the home, but it was found to be
dangerous: when heated, it changes into a poisonous gas that can cause severe illness and even death if it is inhaled.
Because of this dangerous characteristic, the United States revoked permission for the home use of carbon tetrachloride
in1970. The United States has taken similar action with various other chemical compounds.

1. According to the passage, before 1970 carbon D. not allowed in home cleaning products
tetrachloride was…. E. barely used as a cleaning products in home using
A. used by itself as a cleanser
B. banned in industrial use 2. It is stated in the passage that when carbon tetrachloride
C. often used as a component of cleaning products is heated, it becomes….
A. harmful
B. colorless
C. a cleaning compound
D. inflammable
E. deathly
Text 2
What causes reading disabilities, or dyslexia? Studies have been conducted for generations in an attempt to find
answers to this difficult question. Rather than a single answer, however, several factors have emerged that seem to
contribute to the disability. One factor points to a genetic link from one generation to the next. In particular, males are
more likely to be affected if a father, grandfather, or uncle had dyslexia. Early difficulty in discriminating sounds appears
to be another factor. Children who cannot hear the subtle differences within and among words will also have difficulty in
reading those sounds. Finally, visual-perceptual problems, a difficulty in clearly seeing the written words, also contribute
to dyslexia. If the words do not appear clearly, seem to move, or create distortions, the reader will not be able to read
fluidly and comprehension will suffer.
3. According to the passage, what evidence has been found to support the idea that dyslexia could be genetic?
A. Males tend to read less than females in early childhood.
B. The gene for dyslexia is located on the Y chromosome.
C. Males with dyslexia often have a male relative with the same condition.
D. Poor vision is an inherited condition and a cause of dyslexia.
E. A parent with dyslexia will most likely have a child with dyslexia.

Text 3
What will man be like in the future – in 5000 or even 50,000 years from now? We can only make a guess, of course,
but we can be sure that he will be different from what he is today. From man is slowly changing all the time. Let us take
an obvious example. Man, even five hundred years ago, was shorter than he is today. Now, on average, men are about
three inches taller. Five hundred is a relatively short period of time, so we may assume that man will continue to grow
taller. Again, in the modern world, we use our brains a great deal. Even so, we still make use of only about 20% of the
brain capacity. As time goes on, however, we shall have to use our brains more and more – and eventually we shall need
larger ones! This is likely to bring about a physical change too; the head, in particular the forehead, will grow larger.
Nowadays our eyes are in constant use. In fact, we use them so much that very often they become weaker and we
have to wear glasses. But over a very long period of time, it is likely that man’s eyes will grow stronger. On the other
hand, we tend to make less use of our arms and legs. These, as a result, are likely to grow weaker. At the same time,
however, our fingers will grow more sensitive because they are used a great deal in modern life. But what about hair?
This will probably disappear from the body altogether in the course of time because it does not serve a useful purpose any
longer. In the future, then, both sexes are likely to be bald.
Perhaps all this gives the impression that future man will not a very attractive creature to look at! This may well be
true. All the same, in spite of these changes, future man will still have a lot of common with us. He will still be a human
being, with thoughts and emotions that resemble us.

4. According to the text, which of the following statements is TRUE about the man?
A. It takes a few decades for man to be taller.
B. The development of man’s brain does not affect his physical development.
C. Modern people are using the full capacity of their brains.
D. Within a decade, man has become three inches taller.
E. It can be expected that future man will be taller.

Text 4
The renowned Boston Symphony Orchestra gave its inaugural concert on October 22, 1881. It has continued to
uphold the vision of its founder, the philanthropist, Civil War veteran, and amateur musician Henry Lee Higginson, who
dreamed of founding a great and permanent orchestra in Boston for many years. The first concert was given under the
direction of conductor Georg Henschel, who remained music director until 1884.For nearly twenty years, concerts were
held in the Old Boston Music Hall, then in Symphony Hall from 1900,one of the world's most highly regarded concert
halls. Henschel was succeeded by a series of German born and trained conductors: Wilhelm Gericke, Arthur Nikisch,
Emil Paur, and Max Fiedler - culminating in the appointment of the legendary Karl Muck, who served two terms as music
director, 1906 - 08 and 1912 - 18.

5. Which of the following is not true about Henry Lee

Higginson?
A. founder of Boston Symphony Orchestra
B. the philanthropist
C. Civil War Veteran
D. conductor
6. All of the following are true, except_____
A. Henry Lee Higginson wanted to Boston to have a
great and permanent orchestra for many years.
B. Wilhelm Gericke, Arthur Nikisch, Emil Paur, and
Max Fiedler were born in German and were trained
conductors.
C. The legendary Karl Muck served as music director
for 8 years in a row.
D. Georg Henschel was the conductor for the concert
on October 22, 1881
Text 5
Blood plasma is clear, almost colorless liquid. It consists of blood from which the read and white cells have been
removed. It is often used in transfusions because a patient generally needs the plasma portion of the blood more than the
other components.
Plasma differs in several important ways from whole blood. First of all, plasma can be mixed for all donors and does
not have to be from the right blood group, as whole blood does. In addition, plasma can be dried and stored, while whole
blood cannot.
7. All of the following are true about blood plasma
EXCEPT that….
A. it is a deeply colored liquid
B. blood cells have been taken out of it
C. patents are often transfused with it
D. it is generally more important to the patient than
other parts of whole blood
8. Which of the following is NOT stated about whole
blood?
A. It is different from plasma.
B. It cannot be dried.
C. It is impossible to keep it in storage for a longtime.
D. It is a clear, colorless liquid.

Text 6
Blood pressure measurement has two components: systolic and diastolic. Systolic pressure is taken when the heart is
contracting to pump blood; diastolic pressure is taken when the heart is resting between beats. In the usual blood pressure
reading, the systolic measurement is given first and is the higher of the two.
Normal blood pressure is a systolic measurement of 140, and when the systolic pressure is 160 or higher, then
hypertension exists. Systolic pressure between 140 and 160 indicates borderline hypertension.

9. Which the following is NOT true about systolic blood D. Hypertension exists when the systolic pressure is
pressure? below 140.
A. It is taken during the contraction of the heart.
B. It is usually given first in a blood pressure reading. 10. Which of the following is NOT stated about diastolic
C. A normal systolic measurement is 140. pressure?
A. It is one of the two components of blood pressure
measurement.
B. It is taken when the heart is resting
C. It is lower than systolic pressure.
D. A diastolic measurement of 140 is normal.
Text 6
Earthquake is any sudden shaking of the ground caused by the passage of seismic waves through Earth’s rocks.
Seismic waves are produced when some form of energy stored in Earth’s crust is suddenly released, usually when
masses of rock straining against one another suddenly fracture and “slip.” Earthquakes occur most often along
geologic faults, narrow zones where rock masses move in relation to one another. The major fault lines of the world
are located at the fringes of the huge tectonic plates that make up Earth’s crust.
Little was understood about earthquakes until the emergence of seismology at the beginning of the 20th century.
Seismology, which involves the scientific study of all aspects of earthquakes, has yielded answers to such long-
standing questions as why and how earthquakes occur. About 50,000 earthquakes large enough to be noticed without
the aid of instruments occur annually over the entire Earth. Of these, approximately 100 are of sufficient size to
produce substantial damage if their centers are near areas of habitation. Very great earthquakes occur on average about
once per year. Over the centuries they have been responsible for millions of deaths and an incalculable amount of
damage to property.
6. The paragraph following the passage most likely discusses ….
A. suggestions to emerge the seismology to detect the earthquake
B. examples of the substantial damage that caused by the earthquake
C. the development of seismology to identify the earthquake earlier
D. factors that cause the earthquake and seismic wave
E. the reason why we need the seismology

Text 7 is for number 7 and 8

When a strong earthquake occurs on the ocean floor rather than on land, a tremendous force is exerted on the
seawater and one or larger, destructive waves called tsunamis can be formed. Tsunamis are commonly called tidal
waves in the United States, but this is really an inappropriate name in the cause of the Tsunami is an underground
earthquake rather than the ocean’s tides.
Far from land, a tsunami can move through the wide open vastness of the ocean at a speed of 600 miles (900
kilometers) per hour and often can travel tremendous distances without losing height and strength. When a tsunami
reaches shallow coastal water, it can reach a height of 100 feet (30 meters) or more and can cause tremendous
flooding and damage to coastal areas.
7. The paragraph preceding the passage most probably discusses….
A. tsunamis in various parts of the world D. the effect of tides on tsunamis
B. the negative effects of tsunamis E. the damage caused by an earthquake
C. land-based earthquakes

8. Which of the following is most likely the topic of the paragraph following the passage?
A. The causes of tsunamis D. The distances covered by tsunamis
B. The destructive effects of tsunamis on the coast E. The definition of tsunami
C. The differences between tsunamis and tidal waves

Text 9 is for number 9 and 10

Another program instrumental in the popularization of science was Cosmos. This series, broadcast on public
television, dealt with topics and issues from varied fields of science. The principal writer and narrator of the program
was Carl Sagan, a noted astronomer and Pulitzer Prize-winning author.
9. The paragraph preceding the passage most probably discusses….
A. a different scientific television series D. public television
B. Carl Sagan’s scientific achievements E. Carl Sagan’s experience
C. The Pulitzer Prize won by Carl Sagan

10. The paragraph following this passage most likely contains information on what?
A. The popularity of science
B. The program Cosmos
C. The astronomer Carl Sagan
D. Topics and issues from various fields of science
E. a different scientific television series