免費一年的 GED-Science 題庫更新

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購買後，立即下載 GED-Science 題庫 (GED Science Exam): 成功付款後, 我們的體統將自動通過電子郵箱將您已購買的產品發送到您的郵箱。（如果在12小時內未收到，請聯繫我們，注意：不要忘記檢查您的垃圾郵件。）

最新的 GED Certification GED-Science 免費考試真題:

1. Which factor affects fish survival in lakes with acid deposition?

A) number of trees surrounding the lake
B) types of fowl inhabiting wooded areas near the lake
C) quantity of water lilies on the lake
D) adjacent soil's ability to neutralize acid
E) lake's elevation above sea level

2. The movements of different freshwater fish were tracked as they swam in waters of varying temperatures. Assuming that "normal" aquarium water temperature is 25(degrees) C, the effects of water temperature on movements were found within a temperature range from 18(degrees) C to 28(degrees)
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What statement is the best conclusion that can be made based on the information collected in this experiment?

A) If the water is too cold, the fish will not die.
B) A change in water temperature affects fish movement.
C) The dissolved oxygen in the water does not affect the fish movements.
D) If the water is too warm, the fish can not swim.
E) The best water temperature for swimming is 10(degrees) C.

3. 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) Warm water contains more oxygen than cold water.
B) Minerals dissolve more readily in cold water.
C) In warm water, oxygen and carbon dioxide combine to form ammonia and other poisonous gases.
D) Warm water evaporates much more slowly than cold water.
E) Warm water contains less dissolved carbon dioxide needed for photosynthesis.

4. Meteorites are broken fragments formed from comets and by collisions between asteroids orbiting the Sun in the belt between Mars and Jupiter. Meteorites range in size from fine dust particles to bodies many miles in diameter that produce large craters when they strike Earth, Mars, or the Moon.
From what sources do many meteorites originate?

A) fragments of Jupiter's moons
B) asteroids
C) the center of the Sun
D) Mars
E) collisions among solar showers from the stars

5. A biology class examined the effects of small amounts of several chemicals on the heart rate of tiny water fleas. The graph shown at the left shows the results.

Which statement provides the best interpretation of the data?

A) The chemicals used in this study were stimulants.
B) Ethyl alcohol had no effect on the fleas' heart rate.
C) All chemicals increased the fleas' heart rate.
D) Tea increased the fleas' heart rate more than coffee.
E) Tobacco juice increased the heart rate more than coffee.

問題與答案：