sharks can detect minute electrical discharges coming from its prey

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• 1. 

  A tapestry consists of a foundation weave, called the warp, which across are passed different colored threads, called the weft, forming decorative patterns.

  • A.

    Consists

  • B.

    Which across

  • C.

    Colored

  • D.

    Patterns

  Correct Answer
  B. Which across

  Explanation
  The phrase "which across" is not a complete or coherent sentence. It seems to lớn be missing some words or punctuation. Without further context or clarification, it is difficult to lớn determine the intended meaning or provide an explanation.

• 2. 

  The works of early American woodcarvers had many artistic qualities, but these craftsmen probably did not think of them as artists.

  • A.

    Works

  • B.

    Many

  • C.

    Did not

  • D.

    Them  

  Correct Answer
  D. Them  

  Explanation
  The pronoun "them" refers to lớn the artistic qualities mentioned in the sentence. The sentence states that the early American woodcarvers had many artistic qualities, but they probably did not think of those qualities as art. Therefore, "them" is the correct answer as it correctly refers to lớn the artistic qualities.

• 3. 

  Perhaps mankind's first important musical influence were the songs of birds.

  • A.

    First

  • B.

    Musical

  • C.

    Were

  • D.

    Birds

  Correct Answer
  C. Were

  Explanation
  The correct answer is "were" because it agrees with the plural noun "songs" and the subject "the songs of birds." In this sentence, "were" is the correct past tense khuông of the verb "to be" to lớn match the plural subject.

• 4. 

  The techniques of science and magic are quite different, but their basic aims-to understand and control nature-they are very similar.

  • A.

    Magic

  • B.

    Different

  • C.

    To understand

  • D.

    They are  

  Correct Answer
  D. They are  

  Explanation
  The given statement suggests that although the techniques of science and magic are different, their basic aims are very similar, which is to lớn understand and control nature. This implies that both science and magic share a common goal of exploring and manipulating the natural world, despite their distinct methodologies.

• 5. 

  It was in a cave near Magdalena, New Mexico, when the oldest known ears of were discovered.

  • A.

    When

  • B.

    Oldest

  • C.

    Known

  • D.

    Discovered

  Correct Answer
  A. When

  Explanation
  The word "when" is the correct answer because it is used to lớn indicate the specific time or moment in which the discovery of the oldest known ears occurred. In this case, the sentence states that the discovery took place "in a cave near Magdalena, New Mexico." The word "when" connects this information to lớn the timing of the discovery, making it the appropriate choice for the answer.

• 6. 

  The fossil remains of much extinct mammals have been found in the tar pits at  Rancho La Brea in Los Angeles.

  • A.

    Much

  • B.

    Mammals

  • C.

    Found

  • D.

    In

  Correct Answer
  A. Much

  Explanation
  The word "much" in this sentence is used to lớn indicate a large quantity or number of extinct mammals. The use of "much" suggests that there were a significant amount of fossil remains found in the tar pits at Rancho La Brea in Los Angeles.

• 7. 

  Sharks can detect minute electrical discharges coming from its prey.

  • A.

    Can detect

  • B.

    Electrical

  • C.

    Coming

  • D.

    Its  

  Correct Answer
  D. Its  

  Explanation
  Sharks have a special organ called the ampullae of Lorenzini, which enables them to lớn detect electrical signals in the water. This allows them to lớn sense the electrical discharges produced by their prey, such as the muscle contractions of fish or the heartbeat of other animals. The word "its" in the answer refers to lớn the shark's ability to lớn detect these electrical discharges.

• 8. 

  A dark nebula consists of a cloud of interstellar dust enough dense to lớn obscure the stars beyond it.

  • A.

    A cloud of

  • B.

    Enough dense

  • C.

    Obscure

  • D.

    Beyond

  Correct Answer
  B. Enough dense

  Explanation
  The correct answer is "enough dense" because it accurately describes the characteristic of a dark nebula. A dark nebula is a cloud of interstellar dust that is dense enough to lớn block the light from stars located behind it. The mật độ trùng lặp từ khóa of the dust particles within the nebula is what causes the obscuration of the stars beyond it.

• 9. 

  Commercially honey is heated and filtered in order to lớn stabilize and clarify it.

  • A.

    Commercially

  • B.

    Filtered

  • C.

    Stabilize

  • D.

    It

  Correct Answer
  A. Commercially

  Explanation
  Commercially refers to lớn the process of producing or selling goods or services for profit. In the context of honey, commercially means that it is done on a large scale for commercial purposes. Filtered means that the honey is passed through a filter to lớn remove impurities such as wax, pollen, or other particles. Stabilize means to lớn make something stable or consistent. In the case of honey, heating and filtering it helps to lớn remove any impurities and ensure that it has a consistent texture and appearance. Therefore, the correct answer is commercially.

• 10. 

  The various parts of the body toàn thân require so different surgical skills that many surgical specialties have developed.

  • A.

    Various

  • B.

    So

  • C.

    Surgical

  • D.

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    Many

  Correct Answer
  B. So

  Explanation
  The word "so" is used in this sentence to lớn indicate the extent or degree to lớn which surgical skills are different for various parts of the body toàn thân. It suggests that the differences in surgical skills required for different parts of the body toàn thân are significant or substantial.

• 11. 

  One reason birds have been so sánh successful is because of their able to lớn escape from danger quickly.

  • A.

    Have been

  • B.

    Because

  • C.

    Able

  • D.

    Quickly

  Correct Answer
  C. Able

  Explanation
  Birds have been successful due to lớn their ability to lớn escape from danger quickly. This means that they possess the skill or capability to lớn quickly get away from situations that pose a threat to lớn them. This ability allows birds to lớn avoid predators, navigate through dangerous environments, and react swiftly to lớn potential harm. By being able to lớn escape quickly, birds increase their chances of survival and therefore contribute to lớn their overall success as a species.

• 12. 

  The wood of the rosewood tree is used to lớn do fine musical instruments.

  • A.

    Wood

  • B.

    Is used

  • C.

    Do

  • D.

    Musical

  Correct Answer
  C. Do

  Explanation
  Rosewood is a type of wood that is highly valued for its beautiful grain and resonance, making it ideal for crafting fine musical instruments. The wood is known for its rich, warm tone and excellent acoustic properties, making it a popular choice among luthiers and musicians. The phrase "is used to lớn do" implies that the wood is utilized or employed in the process of creating musical instruments, highlighting its importance in the world of music.

• 13. 

  Chemical engineering is based on the principles of physics, chemists, and mathematics.

  • A.

    On

  • B.

    Principles

  • C.

    Chemists

  • D.

    Mathematics

  Correct Answer
  C. Chemists

  Explanation
  Chemical engineering is based on the principles of physics, chemists, and mathematics. This suggests that chemists play a crucial role in the field of chemical engineering. They contribute their knowledge of chemical reactions, properties of substances, and molecular structures to lớn design and optimize processes for the production of various chemicals and materials. Chemists also help in analyzing and troubleshooting issues related to lớn chemical processes. Therefore, their expertise is essential in the practice of chemical engineering.

• 14. 

  Ballet performers must be believable actors and actresses as well as experts dancers.

  • A.

    Must be

  • B.

    Actors

  • C.

    As well

  • D.

    Experts  

  Correct Answer
  D. Experts  

  Explanation
  The correct answer is "experts" because the sentence states that ballet performers must be "believable actors and actresses as well as experts dancers." This means that in addition to lớn being skilled dancers, they must also have a high level of expertise in their craft.

• 15. 

  Venus, the second planet from the Sun, is exactly almost the same size as the Earth.

  • A.

    The second

  • B.

    From

  • C.

    Exactly almost

  • D.

    Same size

  Correct Answer
  C. Exactly almost

  Explanation
  The phrase "exactly almost" is an oxymoron, as "exactly" and "almost" have opposite meanings. "Exactly" implies precision and accuracy, while "almost" suggests a degree of approximation or nearness. Therefore, the phrase is contradictory and does not make logical sense.

• 16. 

  P T. Barnum opened his own circus in 1871 and become the most famous showman of his time.

  • A.

    His own

  • B.

    Become

  • C.

    Most famous

  • D.

    Time

  Correct Answer
  B. Become

  Explanation
  The word "become" in this context indicates a change or transformation that occurred. In this case, it suggests that Phường.T. Barnum went from being a regular showman to lớn becoming the most famous showman of his time.

• 17. 

  The way a child plays with other children reveals a lots about the child's emotional development.

  • A.

    Plays with

  • B.

    A lots

  • C.

    The child's

  • D.

    Development

  Correct Answer
  B. A lots

  Explanation
  The phrase "a lots" is grammatically incorrect. The correct phrase should be "a lot." This suggests that the child's emotional development can be observed through their interactions and behavior while playing with other children.

• 18. 

  Sheep have been domesticated for over 5,000 years ago.

  • A.

    Have been

  • B.

    Domesticated

  • C.

    Over

  • D.

    Years ago  

  Correct Answer
  D. Years ago  

  Explanation
  The phrase "years ago" indicates a specific point in time in the past when sheep have been domesticated. It suggests that the domestication of sheep occurred at least 5,000 years before the present.

• 19. 

  Chemical compounds with barium, cobalt, and strontium are responsible to many of the vivid colors in fireworks.

  • A.

    With

  • B.

    Are

  • C.

    To

  • D.

    Colors

  Correct Answer
  C. To

  Explanation
  Chemical compounds with barium, cobalt, and strontium contribute to lớn the creation of vivid colors in fireworks.

• 20. 

  Duke University in North Carolina has an outstanding collecting of documents concerning Southern history.

  • A.

    Has

  • B.

    Collecting

  • C.

    Concerning

  • D.

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    History

  Correct Answer
  B. Collecting

  Explanation
  The word "collecting" is the correct answer because it is the present participle khuông of the verb "collect." In the given sentence, it is used as a gerund, functioning as a noun. The sentence states that Duke University has an outstanding collection of documents, indicating that the act of collecting these documents is ongoing or continuous. Therefore, "collecting" is the appropriate choice to lớn describe this action.