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Code d'Examen: GED-Reading
Nom d'Examen: GED (GED Reasoning Through Language Arts (Language Arts - Reading))
Questions et réponses: 240 Q&As
Code d'Examen: GED-Science
Nom d'Examen: GED (GED Science Exam)
Questions et réponses: 300 Q&As
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NO.1 A scientist uses a laboratory mouse to complete an experiment involving a maze. During each
trial, the mouse runs through the maze, and the scientist counts the number of errors that the mouse
makes before it reaches the end of the maze. The mouse goes through the maze a total of six times.
The scientist's data are shown in the table at the left.
Based on the information and graph, which statement is the best interpretation?
A. The mouse made more errors after completing several runs through the maze.
B. The mouse made the same number of errors during each run through the maze.
C. The mouse reduced the number of errors made during the six runs through the maze.
D. The number of errors that the mouse made decreased an equal amount during each subsequent
run through the maze.
E. The number of errors that the mouse made varied erratically during the six runs through the maze.
Answer: C
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NO.2 Making products from recycled materials, such as aluminum cans, glass, and plastic usually
saves energy and other resources. For example, it takes about 75% less energy to make steel from
scrap than from ore. All forms of recycling involve some energy to produce the recycled materials, a
process that also results in the production of some pollution.
The chart at the left shows the energy savings from recycling.
When Anil is at the grocery store, he can choose to buy juice in a glass bottle, an aluminum can, a
plastic jug, a juice box (paper), or foil-covered juice container.
If Anil's community requires that he recycles, which container would provide the MOST overall
energy savings?
A. aluminum can
B. plastic jug
C. waxy, cardboard juice box
D. glass bottle
E. foil-covered container
Answer: A
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NO.3 During food digestion, nutrients are broken down through mechanical and chemical processes.
The mechanical phase of digestion begins when you take a bite of food. Food is then physically
broken down into smaller particles so that digestive enzymes can act. Chemical digestion involves a
change in the chemical nature of nutrients so that they can be broken down further and absorbed
into the bloodstream.
Which digestive activity is an example of chemical digestion?
A. cutting and tearing the food by front teeth
B. grinding and chewing the food by back teeth
C. churning the food in the stomach by the stomach muscles
D. swallowing the food
E. digestive enzymes breaking down complex molecules of protein
Answer: E
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NO.4 Cholera is a disease caused by a bacterium that is transmitted by water, shellfish, and raw
vegetables. The major symptom is severe diarrhea. Epidemics of cholera in the Americas, common in
the 19th century, are much less frequent now with the advent of modern medicine and improved
methods of hygiene.
However, in 1991, the number of cholera epidemics increased again in one South American country,
causing over 4000 deaths.
The high number of cases of cholera in the South American country noted above was most probably
due to which factor?
A. prolonged smoking of cigarettes
B. lack of variety in foods
C. poor water and sewage treatment
D. eating the wrong kinds of foods
E. widespread overuse of antibiotics
Answer: C
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NO.5 A newly hatched chicken will peck at any spots on the ground that are a color different from
the ground. This behavior is instinctive and only about 15 percent of the pecks lead to food. However,
with time, the chick's accuracy in using pecks to pick up food improves.
To what can we attribute this more accurate feeding behavior?
A. The mother hen instructed the young chick.
B. Information was obtained from other chicks.
C. Trial and error on the part of the chick improved feeding success.
D. More food was made available to the chick.
E. The chick competed with other chicks.
Answer: C
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NO.6 The greenhouse effect explains why a car's interior can get hot on a sunny day even if it is cool
outside. The glass windows allow the Sun's rays to pass through to the interior but
prevent heat rays from escaping to the outside. Certain gases, such as carbon dioxide and nitrous
oxide, act like the glass in a greenhouse when they are present in the atmosphere.
Both natural and human activities lead to the release of gases that contribute to the greenhouse
effect. During recent summers, forest fires have contributed to the loss of millions of acres of forest.
These fires have resulted in the release of smoke and ash as well as greenhouse gases.
Based on the information, which statement most likely predicts the result of ongoing widespread
forest fires?
A. Forest fires are unlikely to affect atmospheric temperature.
B. Forest fires decrease the amount of atmospheric greenhouse gases.
C. Greenhouse gases could help form new animal species.
D. There could be a gradual increase in average atmospheric temperatures.
E. There could be a gradual decrease in average atmospheric temperatures.
Answer: D
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NO.7 The pH of a liquid is a measure of its acidity or its alkalinity. Even small changes in pH of human
blood can cause very serious health problems.
Carbon dioxide (CO2), is one of the dissolved gases present in healthy blood. CO2 normally mixes
with the water in blood to form a mild acid, carbonic acid, which lowers the blood pH.If a health
problem causes the dissolved carbon dioxide to increase or decrease, the blood's pH would change
and could produce an unhealthy pH level.
Based on this information, which statement best summarizes the blood condition that might result
when an individual has a respiratory condition that causes the blood to contain too much CO2?
A. The blood pH will remain the same.
B. The blood pH will be lowered.
C. The blood will be less acidic.
D. The blood's white cell count will be greatly decreased.
E. The blood will clot more quickly.
Answer: B
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NO.8 The following symbols represent a shortcut for representing an element. For example, O
stands for oxygen, H for hydrogen, and C for carbon. H2O is the formula for water. The subscript 2 in
the formula indicates that there are two atoms of hydrogen in a water molecule. If there is no
subscript after a symbol, the subscript is assumed to be one. Therefore, one molecule of water
contains three atoms: two hydrogen atoms and one oxygen atom.
Based on the information, how many atoms are represented in C12H22O11?
A. 3
B. 11
C. 12
D. 22
E. 45
Answer: E
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