what does nebulous mean
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Nursing Elites

HESI A2

HESI A2 Vocabulary Practice Test

1. What does Nebulous mean?

Correct answer: B

Rationale: The correct answer is B: 'Vague.' Nebulous means something that is vague or unclear. Choices A, C, and D are incorrect because nebulous is the opposite of clear, distinct, and complex. Nebulous refers to something lacking definite form or limits, making it difficult to understand or perceive clearly.

2. Precipitous is best defined as being ____?

Correct answer: B

Rationale: The correct answer is B: 'Swift.' Precipitous is used to describe something that is steep, sheer, or done suddenly and without careful consideration. For example, a precipitous drop in the stock market. 'Slow' (Choice A), 'Gradual' (Choice C), and 'Delayed' (Choice D) do not align with the meaning of precipitous and are therefore incorrect.

3. The number of people _____ from other counties to the United States has caused a shift in unemployment in the textile market.

Correct answer: B

Rationale: The correct answer is 'Immigrating' because it refers to people coming to live permanently in a foreign country. 'Emigrating' (Choice A) means leaving one's own country to settle permanently in another, which does not fit the context of people coming into the United States. 'Migrating' (Choice C) is a general term for moving from one place to another without emphasizing the aspect of settling in a new country. 'Emigrated' (Choice D) is the past tense of emigrate and does not convey the ongoing action of people moving to the United States.

4. What is the meaning of the word 'placebo' in the following sentence: 'Ten patients will receive the experimental drug while 10 take a placebo'?

Correct answer: C

Rationale: In the context of the sentence, the word 'placebo' refers to a substance or treatment that resembles a real medical treatment but has no therapeutic effect. It is used as a standard against which the effects of the experimental drug are compared. A placebo is typically included in a control group in medical research to evaluate the actual effects of the experimental drug. Therefore, in this scenario, the placebo serves as a control to gauge the effectiveness of the experimental drug, making choice C the correct answer. Choices A, B, and D are incorrect because a placebo is not a fallback, substitute, or curative treatment in this context.

5. What is Hydration?

Correct answer: B

Rationale: Hydration refers to the maintenance of body fluids. Choice A is incorrect as it describes the opposite process, dehydration. Choice C is incorrect as it focuses on the result of inadequate hydration rather than the concept itself. Choice D is incorrect as it does not accurately define hydration but rather implies removing fluids.

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