Examen TOEFL

1- The gorgeous colors of some insects make _______ among the most beautiful of
all animals.
a) them
b) what
c) that which
d) they are
2- In 1796 investigations into the chemical nature of diamond concluded _______ a

form of pure carbon.
a) that it
b) is it
c) that it is
d) is that
3- The Moon is much closer to Earth ______ is the Sun, and thus it has greater
influence on the tides.
a) unlike
b) than
c) but
d) where
4- ________ the diets of peoples of the ancient world are well documented, not
much is known about their cooking techniques.
a) When
b) Since
c) After
d) Although
5- Many species of flowering plants could not survive long _______ insects to
pollinate their blossoms.
a) without
b) unless
c) no
d) except
6- The year 1959 was ______ the fiftieth state of the United States.
a) became Hawaii
b) when Hawaii became
c) which became Hawaii
d) Hawaii as became
7- Almost _______ substances expand in volume when heated and contract when
cooled.
a) all
b) they all
c) all of
d) all are
8- Medical research at the cellular level, ______ research on the immune system,
has been mad epossible through twentieth-century advances in techniques of
genetic research.
a) which
b) whereas
c) such as
d) is also
9- Any lever in which the load and effort balance each other is said ______
equilibrium.
a) to be in
b) that it is
c) in
d) is in
10- _________, weaving was practiced as long ago as the New Stone Age.
a) Among the first crafts developed by early peoples

b) It was among the first crafts developing by early peoples
c) Developed by early peoples was among the first crafts
d) Early peoples, who developed the first crafts
11- The principal goal of the Lewis and Clark Expedition of 1804 was ______ a water
connection between the Atlantic and Pacific Oceans.
a) that located
b) by locating
c) located
d) to locate
12- The first canal in the United States, _______ on the Connecticut River to bypass
a waterfall, launched an era of canal building.
a) which built
b) and built
c) was built
d) built
13- Limestone, a sedimentary rock, _______ as a building material and as a source

of lime and cement.
a) of importance economic is
b) importance is of economic
c) is of economic importance
d) is importance of economic
14- The invention of the compound microscope (which allowed much higher
magnification through multiple lenses) made _______ the great strides in life
sciences.
a) it possible
b) possibly
c) possible
d) it was possible
15- _________ primary language of the United States is English, enriched by words
borrowed from the languages of Native Americans and immigrants.
a) It is the
b) Of the
c) The
d) As
16- Candles have been made for thousands of years by dipping wick material into
melted wax nor by filling a mold with hot liquid wax.
17- Altitude, climate, temperature, and the length of the growing season both
determine where plants will grow.
18- Calcium occurs in most plant and animal matter and is essential for the formation
and maintenance of strongly bones and teeth.
19- In most areas of the world, the progression from stone to bronze technology was
marked by an intermediary periods when copper was used.
20- Since many thousands of meteorites falling to Earth unobserved, estimates of

their rate of fall are fundamentally unreliable.
21- Metaphysical philosophy is concerned with the principles, structures, and

meaningful that underlie all observable reality.
22- Many species of birds that breed in temperate latitudes often show particular
patterns of migration while the year.
23- The graceful cheetah has long slender leg and probably can run faster than any
other animal for limited distances.
24- The study of identical twins provides crucial data about the contributions of
heredity and environmental factors to human developmental.
25- Earth's inner core is made of iron, but it surface is primarily composed of lighter
elements such as oxygen and silicon.
26- Charlotte Perkins Giman began her literary career in the 1890s with the
publication of her poetry, short stories, and social analyze.
27- According to antropological reports, traces of fire-hardened wooden spears have

been found date from 400,000 years ago.
28- United States portrait painter Alice Neel has well known for her portraits of
personalities from the art world.
29- Expressionist drama often shows the influence of modern psychology by

reflecting the frustrations inner of the dramatist.
30- Mount Vernon, near Alexandria, Virginia, the home of George Washington,
began as small house, probably built before 1700, that Washington enlarged in
stages.
31- In the United States, in the years after 1828, the Democrats won the presidency
six out of eight times through 1856 and control Congress during most of that period
too.
32- As do all insects, a butterfly has a hard outer covering, called it an exoskeleton,
that both supports and protects the body.
33- Kindergarten is form of preschool education in which children are taught through
creative play, social interaction, and natural expression.
34- The organ is one of the most ancient musical instruments still in used
35- Some modern domestic appliances are he product of recent advances in

technology, whereas others, such as the vacuum cleaner, owe its existence to
nineteenth-century inventions.
36- The invention of reinforced concrete, plate glass, and steel in the mid-1800s was
enabled architects to design and build extremely tall constructions, or
"skyscrapers."
37- In most cases of epilepsy, cerebral electrical activity, also known as brain waves,
demonstrates a characteristically abnormal rhythms.
38- Hydrogen makes up less than 1 percent of the weight of Earth's crust yet ranks
ninth among all the elements in order of abundant on Earth.
39- Because of some alcohols freeze only at extremely low temperatures, they make
excellent antifreeze compounds for use in automobile radiators.
40- Basalt, which composes most of the ocean floor, is a dark-grey rock rich in iron
and magnesium than most surface rocks.

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1- The gorgeous colors of some insects make _______ among the most beautiful of

2- In 1796 investigations into the chemical nature of diamond concluded _______ a

a) Among the first crafts developed by early peoples

13- Limestone, a sedimentary rock, _______ as a building material and as a source

20- Since many thousands of meteorites falling to Earth unobserved, estimates of

21- Metaphysical philosophy is concerned with the principles, structures, and

27- According to antropological reports, traces of fire-hardened wooden spears have

29- Expressionist drama often shows the influence of modern psychology by

35- Some modern domestic appliances are he product of recent advances in

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