As used in the second paragraph, what does the term ubiquitous mean?
- A. Indigenous
- B. Often ignored
- C. Found everywhere
- D. Dangerous
Correct Answer: C
Rationale: The correct answer is C: 'Found everywhere.' Ubiquitous in this context means widespread presence. In the provided extract, it is mentioned that MRSA bacteria have become ubiquitous not only in hospitals but also in various other settings, indicating they are found everywhere. Choice A, 'Indigenous,' is incorrect as it refers to something native or originating from a specific place, which is not the intended meaning in the context. Choice B, 'Often ignored,' is incorrect as ubiquitous means something that is widely present, not something that is ignored. Choice D, 'Dangerous,' is incorrect as ubiquitous does not directly imply danger, but rather the widespread presence of something.
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What is the meaning of the word overturn in the last paragraph of the passage?
- A. Justify
- B. Invalidate
- C. Support
- D. Review
Correct Answer: B
Rationale: Overturn in this context means invalidate, referring to whether the study is strong enough to change existing guidelines.
What is the author's primary purpose in writing this essay about microbes?
- A. To persuade
- B. To inform
- C. To entertain
- D. To analyze
Correct Answer: B
Rationale: The author's primary purpose is to inform readers about the crucial role of microorganisms in the immune system. The essay focuses on presenting factual information and recent discoveries regarding the impact of microbes on human health. The author aims to educate the readers on the significance of microbes in human health rather than persuade them of a particular viewpoint (Choice A), entertain them with light-hearted content (Choice C), or analyze in-depth data and findings (Choice D). The essay's emphasis on informing readers about the role of microorganisms in the immune system makes 'To inform' the correct choice.
What is the author's attitude toward the use of cosmetics?
- A. Sympathetic
- B. Mocking
- C. Tolerant
- D. Disapproving
Correct Answer: D
Rationale: The author's tone is disapproving, as evidenced by the focus on the negative consequences of using cosmetics with harmful ingredients. The passage discusses historical and contemporary health issues related to beauty practices, indicating a critical stance on the use of cosmetics that compromise health, which supports option D.
Choose the best summary of the passage about microbes.
- A. Scientists have discovered the importance of certain bacteria for a well-functioning immune system, especially in defending against pathogens. The colonization of microbes in the body begins at birth, with the immune system relying on these bacteria for proper function.
- B. The passage discusses the role of bacteria in the development of the human immune system. It highlights that the body supports various microorganisms crucial for immunity, starting from birth. The presence of harmless bacteria is essential for the immune system to work effectively.
- C. The body hosts a vast number of microorganisms critical for immune system development. Harmless bacteria are necessary for the immune system to defend against pathogens effectively. Early research shows promising results in fecal bacteriotherapy for restoring the immune system's ability to fight off harmful invaders.
- D. Microbes play a pivotal role in human health, particularly in immune system development. The introduction of healthy bacteria is essential for the immune system to function correctly. Fecal bacteriotherapy is a novel approach to reintroducing beneficial bacteria into a compromised colon to enhance immune response.
Correct Answer: C
Rationale: The correct answer is C. The passage emphasizes the importance of certain bacteria for a properly functioning immune system. It discusses how harmless bacteria play a crucial role in defending the body against pathogens. Choice A is incorrect as it focuses on the immune system's response to certain types of bacteria in lower organisms, not the overall importance of bacteria for immunity. Choice B is incorrect as it mainly discusses bacteriotherapy in relation to the reconstruction of a damaged colon, rather than the broader role of bacteria in immune system health. Choice D is incorrect as it only talks about the process of replacing harmful bacteria with harmless ones, missing the key point about the necessity of certain bacteria for immune system function.
Which statement about Lifewings Partners is a fact?
- A. Everyone should have access to Lifewings.
- B. The people in Lifewings are modern heroes.
- C. Steve Harden was clever to found Lifewings.
- D. Lifewings is based in Memphis, Tennessee.
Correct Answer: D
Rationale: The statement that Lifewings is based in Memphis, Tennessee, is a verifiable fact.