Choose the meaning of the word 'dilute' in the following sentence: 'Always dilute that medicine before administering it to a patient.'

Correct Answer: A

Rationale: In this context, 'dilute' means to make the medicine less concentrated by adding water or another liquid. It is important to dilute certain medicines to ensure they are safe and effective for a patient's use. Choice B, 'Reduce by half,' is incorrect as diluting does not necessarily mean reducing by half; it means to make less concentrated. Choice C, 'Warm up,' is unrelated to the meaning of dilute. Choice D, 'Decontaminate,' is also incorrect as dilute refers to reducing the concentration of a substance, not removing contaminants.

Correct Answer: B

Rationale: Your 'funny bone' is actually your ulnar nerve, not a bone. The ulnar nerve runs along the inside part of your elbow and is easily bumped or compressed, leading to a tingling or slightly painful sensation that is commonly referred to as hitting your funny bone. The humerus (Choice A) is the long bone in your upper arm, the carpal bone (Choice C) is a bone in your wrist, and the biceps brachii (Choice D) is a muscle in your upper arm. Therefore, the correct answer is the ulnar nerve (Choice B).

Correct Answer: A

Rationale: Acrid is often used to describe a sharp, unpleasant smell or taste, which is synonymous with bitterness. The word 'bitter' closely relates to the strong and sharp sensation associated with acrid qualities. Choice B, 'Smoky,' does not capture the sharpness or unpleasantness associated with acrid, as it refers more to the presence of smoke. Choice C, 'Nimble,' and choice D, 'Severe,' are unrelated to the meaning of acrid and do not serve as synonyms in this context.

Correct Answer: B

Rationale: In this context, the word 'winnowed' means to separate or eliminate less desirable individuals from a larger group, indicating that the applicants were being sifted out or singled out in this process. Therefore, the most appropriate meaning among the choices provided is 'separated.' 'Escorted' (Choice A) implies being accompanied or guided, which is not the intended meaning. 'Elevated' (Choice C) means raised or lifted, which does not fit the context. 'Summoned' (Choice D) suggests being called or requested to attend, which is also not the correct meaning in this context.

Correct Answer: C

Rationale: When someone is at the zenith of their career, it means they have reached the highest point or peak of success in their professional life. This suggests that they have achieved their utmost potential and are enjoying the height of their career accomplishments. Choice A, 'just getting started,' is incorrect as it implies the beginning of a career rather than the peak. Choice B, 'preparing for retirement,' is incorrect because being at the zenith of one's career usually signifies the prime of one's professional success, not the preparation for retirement. Choice D, 'having trouble with your superiors,' is incorrect as it is unrelated to the concept of reaching the peak of success in one's career.