GED GED-Science 問題集

質問 1：
A scientist published his work in a scientific journal, and it generated much excitement in the scientific community. However, when other scientists across the world did the same experiment to try and repeat the results, it proved to be impossible.
When this type of event occurs, which statement describes the most important factor about a scientific finding's acceptance by the scientific community?
A. published in a scientific journal
B. of considerable practical value
C. presented by a team of scientists
D. reproducible by other scientists
E. based on an important concept
正解：D

質問 2：
The surface area of a log can be increased by splitting it into strips. Split wood with a larger surface area will burn much faster than a whole log. In much the same way, a sugar cube will dissolve much faster if its surface area is increased.
Which method will most increase the surface area of a sugar cube?
A. Crush the cube into tiny fragments.
B. Use a small round sugar tablet.
C. Reshape the sugar granules into a ball.
D. Divide the sugar cube into four square pieces.
E. Break the sugar cube in half.
正解：A

質問 3：
Many scientists believe that early in Earth's history, life began in water, aided by the energy from sunlight. Dissolved molecules probably bonded chemically with each other to produce increasingly complex organic molecules called "heterotroph aggregates." These molecules eventually developed the ability to reproduce.
Why are heterotroph aggregates not found on Earth's Moon?
A. The effect of Earth's gravity on the Moon is too weak.
B. There is no energy from sunlight on the Moon.
C. The Moon is composed of inorganic molecules.
D. There is no liquid water on the Moon.
E. The Moon is composed of elements not found on Earth.
正解：D

質問 4：
The battery of an automobile produces electricity from a chemical reaction. This electricity leaves the battery from a post called a terminal and is used in starting the engine. Sometimes a crusty deposit forms on the terminals, preventing the engine from starting. Simply cleaning off the deposit often restores the battery to operable condition.

Which effect does the deposit have on the battery terminals?
A. causes hazardous sparks
B. is caused by hard water
C. improves spark plug firing
D. conducts electricity
E. does not conduct electricity
正解：E

質問 5：
The waters of the Antarctic region contain an abundance of animal and plant life. The large number of living organisms stems partly from the water's high mineral content and partly from the constant cold temperature. The continual flow of materials from below brings nitrates and phosphates into the surface zone. Cold water holds more dissolved carbon dioxide and oxygen than does warm water. The abundance of carbon dioxide and the available sunlight allow photosynthesis to occur in the surface waters almost continuously during the long daylight hours in the summer.
If the temperature of the Antarctic waters increased by a marked degree, which of the following statements would explain a decrease in the abundant life there now?
A. Minerals dissolve more readily in cold water.
B. In warm water, oxygen and carbon dioxide combine to form ammonia and other poisonous gases.
C. Warm water evaporates much more slowly than cold water.
D. Warm water contains more oxygen than cold water.
E. Warm water contains less dissolved carbon dioxide needed for photosynthesis.
正解：E

質問 6：
A contour line is a line passing through points with the same altitude above sea level. A steep slope is represented by closely spaced contour lines; widely spaced contour lines show a more gradual incline.
A topographic map displays these contour lines and helps outline the shape of the landscape locating hills, cliffs, and depressions.
Based on the topographic map at the left, if a person wants to travel on level ground as much as possible, which would be the easiest path between points A and B?
Exhibit:

Exhibit
A. A - D - C - B
B. A - C - B
C. A - E - F - B
D. A - F - C - B
E. A - C - F - B
正解：C

質問 7：
Scientists' studies have revealed that health is tied very closely to diet. Health organizations estimate that more than one-third of all cancer is caused by food and drink. The health of the heart and circulatory system is linked to these factors and to the amount of cholesterol in the bloodstream.
Cholesterol is a fatty, waxy substance. Although a certain amount is required for good health, excessive amounts of cholesterol cause arteries to clog.
Which meal and beverage is best for a person who is trying to reduce his or her cholesterol level?
A. cheese sticks, pears, salad, milk
B. pepperoni pizza, salad, fruit cocktail, cola
C. hamburger, french fries, cola
D. pinto beans, plain baked potato, apples, tea
E. steak, green beans, rice, coffee
正解：D