1.
Dairy farming is _____ leading agricultural activity in the United States.
Correct Answer
A. A
Explanation
Dairy farming is the leading agricultural activity in the United States.
2.
Although thunder and lightening are produced at the same time, light waves travel faster _____, so we see the lightening before we hear the thunder
Correct Answer
A. Than sound waves do
Explanation
Light waves travel faster than sound waves do. This is why we see the lightning before we hear the thunder. The speed of light is much faster than the speed of sound, so the light reaches our eyes almost instantly, while the sound takes some time to travel through the air to reach our ears. Therefore, the visual perception of the lightning occurs before the auditory perception of the thunder.
3.
Beef cattle _____ of all livestock for economic growth in certain geographic regions.
Correct Answer
B. Are the most important
Explanation
Beef cattle are the most important of all livestock for economic growth in certain geographic regions. This means that beef cattle play a crucial role in the economic development of these specific areas.
4.
The discovery of the halftone process in photography in 1881 made it _____ photographs in books and newspapers.
Correct Answer
B. Possible to reproduce
Explanation
The discovery of the halftone process in photography in 1881 allowed for the reproduction of photographs in books and newspapers.
5.
Flag Day is a legal holiday only in the state of Pennsylvania, _____ Betsy Ross sewed the first American flag.
Correct Answer
D. Has
Explanation
The correct answer is "has". The word "has" is used to indicate possession or ownership. In this context, it suggests that the state of Pennsylvania possesses or has the legal holiday of Flag Day. The sentence is incomplete, but based on the given information, "has" is the most appropriate choice to complete the sentence.
6.
_____ vastness of the Grand Canyon, it is difficult to capture it in a single photograph.
Correct Answer
D. Because of the
Explanation
The correct answer is "Because of the". This is because the phrase "Because of the" is used to explain the reason or cause of something. In this case, it explains that it is difficult to capture the vastness of the Grand Canyon in a single photograph.
7.
Speciation, _____, results when an animal population becomes isolated by some factor, usually geographic.
Correct Answer
D. The formation of biological species
Explanation
The correct answer is "the formation of biological species." This answer accurately describes the process of speciation, which occurs when an animal population becomes isolated by some factor, typically geographic. During this isolation, genetic and reproductive barriers can develop, leading to the formation of distinct species over time.
8.
In its pure state antimony has no important uses, but _____ with other substances, it is extremely useful metal.
Correct Answer
A. When combined pHysically or chemically
Explanation
Antimony has no important uses in its pure state, but it becomes extremely useful when it is combined with other substances, either physically or chemically.
9.
The dawn redwood appears _____ some 100 million years ago in northern forests around the world.
Correct Answer
C. to have flourished
Explanation
The correct answer is "to have flourished." This is because the sentence is referring to an action that occurred in the past. The phrase "to have flourished" is the correct form of the verb "flourish" in the past tense. The sentence is stating that the dawn redwood species appeared around 100 million years ago and it is believed that they flourished during that time in northern forests around the world.
10.
Beginning in the Middle Ages, composers of Western music used a system of notating their compositions _____ be performed by musicians.
Correct Answer
D. So they could
Explanation
The correct answer is "so they could". This answer completes the sentence by explaining that composers used a system of notation in order to have their compositions performed by musicians. The phrase "so they could" indicates the purpose or intention behind the use of notation.
11.
Civil Rights are the freedoms and rights _____ as a member of a community, state, or nation.
Correct Answer
C. A person may have
Explanation
Civil Rights are the freedoms and rights that a person may have as a member of a community, state, or nation. This means that individuals are entitled to certain rights and freedoms, such as the right to vote, freedom of speech, and equal protection under the law, simply by virtue of being a member of a larger social, political, or geographical entity. These rights are inherent and should be protected and respected by society and the government.
12.
Richard Wright enjoyed success and influence _____ among Black American writers of his era.
Correct Answer
C. Unparalleled
Explanation
Richard Wright enjoyed success and influence unparalleled among Black American writers of his era. This means that his level of success and influence was unmatched or incomparable to any other Black American writer during that time.
13.
_____ of large mammals once dominated the North American Prairies: the American bison and the pronghorn antelope.
Correct Answer
D. Two species
Explanation
The correct answer is "Two species". The sentence states that "two species of large mammals once dominated the North American Prairies: the American bison and the pronghorn antelope." This means that there were two specific species that were dominant in the area.
14.
Franklin D. Roosevelt was _____ the great force of radio and the opportunity it provided for taking government policies directly to the people
Correct Answer
D. The first President to understand fully
Explanation
Franklin D. Roosevelt was the first President to understand fully the great force of radio and the opportunity it provided for taking government policies directly to the people.
15.
During the late fifteenth century, _____ of the native societies of America had professions in the fields of arts and crafts.
Correct Answer
A. Only a few
Explanation
During the late fifteenth century, only a few of the native societies of America had professions in the fields of arts and crafts. This implies that the majority of native societies did not have individuals who pursued professions in arts and crafts during this time period.
16.
The ponderosa pine is _____ of the most of the timber used by forest product firms in the Black Hills of South Dakota.
Correct Answer
A. The source
Explanation
The correct answer is "the source". This is because the phrase "the most of the timber used by forest product firms" requires a noun phrase to complete the sentence. "The source" acts as a noun phrase and fits grammatically in the sentence. It implies that the ponderosa pine is the main or primary source of timber used by forest product firms in the Black Hills of South Dakota.
17.
Computers that once took up entire rooms are now _____ to put on desktops and into wristwatches.
Correct Answer
A. Small enough
Explanation
The correct answer is "small enough" because it implies that computers have become sufficiently small in size to be placed on desktops and even in wristwatches. This phrase suggests that the size of computers has significantly reduced over time, making them more compact and portable.
18.
According to some educators, the goal of teaching is to help students learn what _____ to know to live a well-adjusted and successful life.
Correct Answer
B. They need
Explanation
The correct answer is "they need". According to some educators, the goal of teaching is to help students learn what they need to know to live a well-adjusted and successful life. This implies that the emphasis is on the students and their needs in order to achieve a fulfilling and successful life.
19.
The sapphire’s transparency to ultraviolet and infrared radiation makes _____ in optical instruments
Correct Answer
D. It useful
Explanation
The correct answer is "it useful". This answer correctly completes the sentence by stating that the sapphire's transparency to ultraviolet and infrared radiation makes it useful in optical instruments.
20.
_____ initial recognition while still quite young.
Correct Answer
A. Most famous scientists achieve
Explanation
The correct answer is "Most famous scientists achieve." This answer is grammatically correct and makes logical sense in the given sentence. It implies that achieving initial recognition is a common occurrence for most famous scientists, suggesting that it is a regular outcome for them.
21.
Mango trees, _____ densely covered with glossy leaves and bear small fragrant flowers, grow rapidly and can attain heights of up to 90 feet.
Correct Answer
B. Which are
Explanation
The correct answer is "which are". This answer correctly completes the sentence by providing a relative clause that describes the characteristics of mango trees. The phrase "which are" is used to introduce additional information about the subject of the sentence, in this case, the mango trees.
22.
_____ the Canadian composer Barbara Pentland wrote four symphonies, three concertos, and an opera, among other works.
Correct Answer
D. A prolific artist
Explanation
The correct answer is "A prolific artist". This answer accurately describes Barbara Pentland as someone who has produced a large amount of work, including four symphonies, three concertos, and an opera. The word "prolific" means producing many works, and it fits well in the context of the sentence.
23.
The Chisos Mountains in Big Bend National park in Texas were created by volcanic eruptions that occurred _____.
Correct Answer
A. The area in which dinosaurs roamed
Explanation
The Chisos Mountains in Big Bend National Park in Texas were created by volcanic eruptions that occurred in the area in which dinosaurs roamed. This suggests that the volcanic activity took place during the time when dinosaurs were present in the region.
24.
In bas-relief sculpture, a design projects very slightly from its background, _____ some coins.
Correct Answer
A. as on
Explanation
In bas-relief sculpture, a design projects very slightly from its background, just as on some coins. This suggests that the design in bas-relief sculpture is raised or elevated from the background, similar to how the design on some coins is also raised.
25.
Alaska found the first years of its statehood costly because it had to take over the expense of services _____ previously by the federal government
Correct Answer
D. Provided
Explanation
Alaska found the first years of its statehood costly because it had to take over the expense of services that were previously provided by the federal government.
26.
With age, the mineral content of human bones decreases, _____ them more fragile.
Correct Answer
C. Thereby making
Explanation
As people age, the mineral content of their bones decreases, which in turn makes them more fragile. The phrase "thereby making" effectively connects the cause (decreasing mineral content) with the effect (increased fragility), making it the correct choice.
27.
Not until Kentucky’s Mammoth Cave had been completely explored in 1972.
Correct Answer
C. the realization of its full ext
Explanation
The correct answer is "the realization of its full extent." This answer accurately reflects the meaning of the given sentence. It suggests that the complete exploration of Mammoth Cave in Kentucky led to the understanding or awareness of its full extent.
28.
The first explorer _____ California by land was Jedediah Strong Smith a trapper who crossed the southwestern deserts of the United States in 1826.
Correct Answer
C. To reach
Explanation
Jedediah Strong Smith was the first explorer to reach California by land. He accomplished this by crossing the southwestern deserts of the United States in 1826.
29.
Written to be performed on a _____, Thornton Wilder’s play Our Town depicts life in a small New England community.
Correct Answer
D. Stage bare of scenery
Explanation
The correct answer is "stage bare of scenery". This means that the play is written to be performed on a stage that has no scenery. This suggests that the focus of the play is on the characters and their interactions, rather than elaborate sets or visuals. The absence of scenery allows the audience to imagine the small New England community and engage more deeply with the story.
30.
. _____ many copper mines in the state of Arizona, a fact which contributes significantly to the state’s economy.
Correct Answer
B. There are
Explanation
The correct answer is "There are". This is because the sentence is referring to the existence of many copper mines in the state of Arizona, indicating a plural subject. Therefore, the correct verb form to use is "are".
31.
After quartz, calcite is the _____ in the crust of the Earth.
Correct Answer
D. Most abundant mineral
Explanation
Calcite is the most abundant mineral in the crust of the Earth.
32.
Regarded as the world’s foremost linguistic theorist, Noam Chomsky continues _____ new theories about language and language learning.
Correct Answer
C. To create
Explanation
Noam Chomsky is considered the leading linguistic theorist, and he is known for his continuous development of new theories about language and language learning. The phrase "to create" indicates his ongoing purpose or intention in generating these new theories. It implies that Chomsky's main objective is to contribute to the field of linguistics by creating and introducing innovative ideas and concepts.
33.
_____ any area receives more water than the ground can absorb, the excess water flows to the lowest level, carrying loose mineral.
Correct Answer
B. Whenever
34.
In 1935 seismologist Charles F. Richter devised _____ for rating the strength of earthquakes.
Correct Answer
C. A numerical scale
Explanation
The correct answer is "a numerical scale" because the sentence structure requires an article before the noun "numerical scale". The article "a" is used before a noun when it is mentioned for the first time or when it is not specific. Therefore, "a numerical scale" is the appropriate choice in this context.
35.
After the Second World War the woman wage earner _____ a standard part of middle-class life in the United States.
Correct Answer
C. Became
Explanation
After the Second World War, it became increasingly common for women to work and earn wages, which became a standard part of middle-class life in the United States.
36.
Celluloid and plastics have largely replaced genuine ivory in the manufacture _____ buttons, billiard balls, and piano keys.
Correct Answer
A. Of such things as
Explanation
Celluloid and plastics have become the preferred materials for making buttons, billiard balls, and piano keys, replacing genuine ivory.
37.
One of the tenets of New Criticism is that a critic need not tell readers _____ about a story.
Correct Answer
B. What to think
Explanation
New Criticism emphasizes the idea that a critic should not dictate or impose their own interpretations or opinions on readers. Instead, the focus is on analyzing the text itself and allowing readers to form their own conclusions. This means that a critic does not need to tell readers "what to think" about a story, as the interpretation and understanding of the text should be left to the readers themselves.
38.
The outer ear, _____ the fleshy pinna and the auditory canal, picks up and funnels sound waves toward the eardrum.
Correct Answer
C. Which includes
Explanation
The correct answer is "which includes". This answer correctly completes the sentence by indicating that the outer ear includes the fleshy pinna and the auditory canal.
39.
The chair may be the oldest type of furniture, _____ its importance has varied from time to time and from country to country.
Correct Answer
D. Although
Explanation
The word "although" is the correct answer because it indicates a contrast between the chair being the oldest type of furniture and its varying importance. Despite being the oldest type, the significance of the chair has changed over time and across different countries.
40.
When wood, natural gas, oil, or any other fuel burns, _____ with oxygen in the air to produce heat.
Correct Answer
C. Substances in the fuel combine
Explanation
When wood, natural gas, oil, or any other fuel burns, substances in the fuel combine with oxygen in the air to produce heat.
41.
Deserts are arid land areas where _____ through evaporation than is gained through precipitation.
Correct Answer
D. More water is lost
Explanation
Deserts are characterized by arid conditions, which means that they experience more water loss through evaporation than they gain through precipitation. This explanation highlights the fact that deserts have a net loss of water due to the high rates of evaporation and low levels of rainfall.
42.
When goshawk chicks are young, _____ parents share in the hunting duties and in guarding the nest.
Correct Answer
B. Both
Explanation
When goshawk chicks are young, both parents share in the hunting duties and in guarding the nest. This means that both the mother and father goshawk participate in finding food for their chicks and protecting them from potential threats. This behavior is common among goshawks during the early stages of their offspring's development.
43.
Fish are the most ancient form of vertebrate life, and _____ all other vertebrates
Correct Answer
A. From them evolved
Explanation
Fish are considered the most ancient form of vertebrate life because they appeared in the fossil record earlier than other vertebrates. The phrase "from them evolved" suggests that other vertebrate groups evolved from fish. This is supported by scientific evidence, such as the similarities in anatomical structures and genetic information between fish and other vertebrates. Therefore, the correct answer is "from them evolved".
44.
Not only _____ among the largest animals that ever lived, but they are also among the most intelligent.
Correct Answer
A. Are whales
Explanation
The correct answer is "are whales" because it correctly completes the sentence by using the plural form of the verb "are" to agree with the subject "whales." The sentence is stating that whales are not only among the largest animals that ever lived, but they are also among the most intelligent.
45.
. _____ 350 species of sharks, and although they are all carnivorous, only a few species will attack people.
Correct Answer
C. There are about
46.
Some snakes lay eggs, but others _____ birth to live offspring
Correct Answer
A. give
Explanation
Some snakes lay eggs, but others give birth to live offspring. This means that while some snakes reproduce by laying eggs, others have the ability to give birth to live young. This variation in reproductive methods is seen in different species of snakes.
47.
Because it was so closely related to communication, _____ art form to develop.
Correct Answer
A. drawing was probably the earliest
Explanation
Drawing was probably the earliest art form to develop because it is closely related to communication. In ancient times, before the invention of writing, people used drawings to convey messages, tell stories, and document their experiences. Drawing allowed them to visually represent their thoughts, ideas, and observations. It was a simple and effective way to communicate with others and express themselves creatively. As a result, drawing likely emerged as one of the earliest forms of artistic expression.
48.
Halley's Comet had its first documented sighting in 240 B.C. in China and _____ it has been seen from the Earth 29 times.
Correct Answer
C. since then
Explanation
The phrase "since then" is the correct answer because it indicates that after the first documented sighting of Halley's Comet in 240 B.C. in China, it has been seen from Earth 29 times. This phrase implies a cause-and-effect relationship, suggesting that the comet's sightings have occurred continuously from that point onward.
49.
_____ that managers commit in problem solving is jumping to a conclusion about the cause of a given problem.
Correct Answer
C. The major error
Explanation
The major error that managers commit in problem solving is jumping to a conclusion about the cause of a given problem. This means that instead of thoroughly analyzing the situation and gathering all the necessary information, managers may make assumptions or rely on their intuition to quickly determine the cause of the problem. However, this can lead to incorrect conclusions and ineffective solutions. It is important for managers to take the time to gather data, consider multiple perspectives, and critically evaluate the situation before jumping to conclusions.
50.
Algonkian-speaking Native Americans greeted the Pilgrims _____ settled on the eastern shores of what is now New England
Correct Answer
C. Who
Explanation
The correct answer is "who" because it is used to refer to people. In this context, "who" is used to indicate that the Algonkian-speaking Native Americans greeted the Pilgrims, emphasizing that they were the ones who settled on the eastern shores of what is now New England.