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Question 3921Question →

A city park features a circular fountain with a diameter of 2020 feet. The city plans to pour a new concrete walkway that is exactly 22 feet wide completely surrounding the fountain. If the concrete costs $5.00\$5.00 per square foot, what is the total cost of the concrete required for the new walkway? (Use π=3.14\pi = 3.14)

Show answer & explanation

Answer: \$690.80

Answer

The total cost of the concrete required for the new walkway is \$690.80.
The correct answer is found by calculating the area of the walkway and multiplying it by the cost per square foot. First, find the radius of the fountain by halving the diameter (20÷2=1020 \div 2 = 10 feet). The outer radius includes both the fountain and the walkway (10+2=1210 + 2 = 12 feet). The area of the walkway is the outer area minus the inner area: (3.14×122)−(3.14×102)=452.16−314=138.16(3.14 \times 12^2) - (3.14 \times 10^2) = 452.16 - 314 = 138.16 square feet. Finally, multiplying this area by the cost of $5.00\$5.00 per square foot gives $690.80\$690.80.

Step-by-Step Solution

1
Determine the inner and outer radii of the circular areas.
Inner radius = 1010 feet; Outer radius = 1212 feet.
The area formula requires the radius, which is half of the 2020-foot diameter. The outer radius includes the 1010-foot fountain radius plus the 22-foot walkway.
2
Calculate the area of the concrete walkway.
(3.14×122)−(3.14×102)=452.16−314=138.16(3.14 \times 12^2) - (3.14 \times 10^2) = 452.16 - 314 = 138.16 square feet.
The walkway forms a ring (annulus) around the fountain. Its area is the total outer area minus the inner fountain area.
3
Calculate the total cost of the concrete.
138.16 sq ft×$5.00/sq ft=$690.80138.16 \text{ sq ft} \times \$5.00/\text{sq ft} = \$690.80.
The total material cost is the square footage of the walkway multiplied by the price per square foot.

Key Concept

Calculating the area of a circular ring (annulus) and applying unit costs.
Question 3922Question →

For the curved structural ribs of the canoe, the boatbuilder selected pliable materials, such as steamed ash wood, thin rattan strips, and softened birch bark. In the sentence above, what does the underlined word pliable most nearly mean?

Show answer & explanation

Answer: easily bent and flexible

Answer

easily bent and flexible
The sentence lists specific examples introduced by 'such as'—steamed ash wood, thin rattan strips, and softened birch bark—used specifically to build curved ribs. These examples illustrate materials that possess the quality of being easily bent and flexible without fracturing.

Step-by-Step Solution

1
Identify the target word and the example clue signal phrase in the sentence.
The target word is 'pliable', and the signal phrase 'such as' introduces the specific examples.
Signal words like 'such as' introduce concrete items that illustrate the meaning of an unfamiliar term.
2
Analyze the common characteristics shared by the provided examples.
The examples listed—steamed ash wood, thin rattan strips, and softened birch bark—are all materials selected specifically for curved canoe ribs.
To create curved structural ribs, the materials must be supple and capable of bending smoothly without snapping.
3
Select the definition that matches the common property demonstrated by the examples.
'easily bent and flexible' accurately captures the defining characteristic of the example materials.
Pliable in this physical context means supple, flexible, and easily bent.

Key Concept

Using example context clues to determine the meaning of an unfamiliar vocabulary word
Estimated Time:45s
Question 3923Question →

The avionics specialist found data entry to be tedious—a monotonous and repetitive task—compared to working directly on aircraft systems. In this sentence, what does the word tedious most nearly mean?

Show answer & explanation

Answer: Boring

Answer

Boring
The sentence provides an explicit synonym clue set off by dashes ('a monotonous and repetitive task'). The word boring directly aligns with this definition.

Step-by-Step Solution

1
Locate the target word and its surrounding punctuation clues.
The word 'tedious' is immediately followed by a restatement set off by dashes: 'a monotonous and repetitive task'.
Dashes frequently enclose direct synonym definitions or clarifying phrases in context clue items.
2
Interpret the meaning of the restatement clue and select the matching synonym.
A task that is described as 'monotonous and repetitive' is boring.
The correct synonym must reflect the meaning established by the restatement clue.

Key Concept

Synonym Context Clues via Dash Restatement
Estimated Time:30s
Question 3924Question →

Based on the illustrative example clues in the sentence, which vocabulary word correctly completes the blank?

Fill in the blanks below

Before applying the primer coat, the autobody specialist smoothed the damaged fender using materials, such as coarse sandpaper, emery cloth, and steel wool.
Show answer & explanation

Answer

abrasive
The sentence provides example context clues signaled by 'such as', listing 'coarse sandpaper, emery cloth, and steel wool.' All three items are gritty, rough materials designed to wear down or smooth a surface by friction, which precisely defines the word 'abrasive'.

Step-by-Step Solution

1
Identify the signal words indicating example context clues in the sentence.
The phrase 'such as' introduces illustrative examples of the target category.
Signal words like 'such as' alert the reader that the items listed define the defining characteristics of the unknown word.
2
Analyze the common properties shared by the listed examples: 'coarse sandpaper, emery cloth, and steel wool.'
All listed items are rough, gritty substances used for smoothing, grinding, or wearing down surfaces through friction.
Extracting the defining trait of the examples reveals the contextual meaning required for the blank.
3
Select the precise vocabulary term matching this shared characteristic.
The word 'abrasive' accurately describes substances that are rough and capable of grinding or polishing surfaces.
Fitting 'abrasive' into the sentence maintains exact semantic agreement with the provided examples.

Key Concept

Using signal words like 'such as' to deduce the meaning of an unfamiliar adjective from specific concrete examples.
Estimated Time:45s
Question 3925Question →

Which common Latin prefix meaning 'backward' or 'affecting what is past' correctly completes the sentence below to describe a policy applied to prior events?

Fill in the blanks below

Because the revised compensation agreement applied to work completed during the previous quarter, the accounting department processed the adjustments as active payments.
Show answer & explanation

Answer

retro-
The prefix 'retro-' is derived from Latin and means 'backward', 'behind', or 'back in time'. When attached to the base word 'active', it forms 'retroactive', which specifically describes a statute, rule, or payment that takes effect from a point in the past.

Step-by-Step Solution

1
Analyze the sentence context and meaning of the missing term.
The sentence describes compensation adjustments that take effect for past work completed in an earlier quarter.
Word Knowledge questions in context require identifying the semantic function of the target word within the sentence.
2
Examine the root word and target morphological structure.
The root base provided is 'active', requiring a directional/temporal prefix to mean 'taking effect from a date in the past.'
Morphological analysis requires combining the appropriate prefix to the base word 'active' to create the standard formal term.
3
Select the correct Latin prefix matching the required definition.
The Latin prefix 'retro-', meaning 'backward' or 'behind in time', combines with 'active' to form 'retroactive'.
'Retroactive' specifically denotes extending in scope or effect to a prior time period.

Key Concept

Morphological analysis of common directional and temporal prefixes
Estimated Time:1m 0s
Question 3926Question →

In operational reporting, selecting the precise word is essential to convey accurate meaning without confusion. Match each target vocabulary word on the left with its accurate synonym on the right, ensuring you eliminate direct opposite (antonym) associations. Which pairs correctly match each word to its true synonym?

Click a left item, then click its matching right item

Items

Intrepid
Frugal
Ephemeral
Taciturn

Matches

Show answer & explanation

Answer

Intrepid matches Dauntless, Frugal matches Thrifty, Ephemeral matches Fleeting, and Taciturn matches Reserved.
Each target vocabulary word is correctly aligned with its true synonym: 'Intrepid' pairs with 'Dauntless' (courageous and bold), 'Frugal' pairs with 'Thrifty' (careful with resources), 'Ephemeral' pairs with 'Fleeting' (brief in duration), and 'Taciturn' pairs with 'Reserved' (disinclined to speak).

Step-by-Step Solution

1
Define each target vocabulary term precisely before evaluating options
Defined terms: Intrepid (fearless), Frugal (economical/prudent), Ephemeral (transitory/short-lived), and Taciturn (quiet/reserved).
Clear independent definitions establish semantic boundaries and prevent confusion with commonly paired opposites.
2
Evaluate corresponding candidates to isolate true synonyms while rejecting antonym distractor associations
Identified Dauntless as the synonym for Intrepid, Thrifty for Frugal, Fleeting for Ephemeral, and Reserved for Taciturn.
Antonym distractor elimination requires deliberately discarding inverse meanings that share high associative recall.
3
Verify that each paired relationship maintains consistent part of speech and tone
All four pairs demonstrate exact synonymy without semantic drift.
Final validation ensures full accuracy across all item matches.

Key Concept

Antonym Distractor Elimination
Estimated Time:1m 0s
Question 3927Question →

A military logistics facility is upgrading the security fence around a rectangular motor pool. The motor pool is 5050 yards long and 8484 feet wide. The new design requires leaving a 2424-foot gap for a main vehicle gate and two separate 33-foot gaps for pedestrian access. The security fencing is purchased in pre-assembled panels that are 7272 inches long each. If each panel costs $120\$120, what is the total cost of the fencing panels needed to enclose the motor pool?

Show answer & explanation

Answer: 8760

Answer

8760 dollars
The correct calculation requires converting all linear measurements to a common unit (feet), calculating the perimeter of the rectangle, subtracting the required gaps for the gates, dividing the remaining length by the panel length to find the total number of panels, and finally multiplying by the cost per panel.

Step-by-Step Solution

1
Convert yards and inches to feet.
Length is 150 feet; panel length is 6 feet.
To ensure consistency in perimeter and material calculations before determining the number of panels.
2
Calculate the full perimeter of the rectangular motor pool.
468 feet.
To find the total boundary length before accounting for the gaps left for gates.
3
Subtract the total width of the gate gaps from the full perimeter.
438 feet.
Because fencing panels are not installed where the vehicle and pedestrian gates are located.
4
Divide the required fencing length by the length of a single panel.
73 panels.
To find how many discrete 6-foot sections make up the 438-foot fence line.
5
Multiply the number of panels by the cost per panel.
$8,760.
To find the final total price of purchasing the required materials.

Key Concept

Calculating perimeter with unit conversions and subtracting gaps to find total material cost.
Estimated Time:2m 0s
Question 3928Question →

The captured commander uttered a bitter malediction before being escorted into the holding cell. What does the word malediction most nearly mean?

Show answer & explanation

Answer: curse

Answer

'Curse' is the closest synonym for the word 'malediction'.
'Curse' is correct because 'malediction' is derived from the Latin prefix 'male-' (badly, ill, evil) and the root 'dict' (to speak). Combined with the noun suffix '-ion', the word literally denotes the act of speaking evil against someone or proclaiming a curse.

Step-by-Step Solution

1
Isolate the morphological components of the target word 'malediction'.
The word divides into the prefix 'male-' (evil/badly), the root 'dict' (to speak/say), and the noun suffix '-ion' (state/act).
Segmenting unfamiliar vocabulary into base roots and affixes reveals foundational meaning.
2
Synthesize the root meanings to construct the full definition.
Combining 'evil' and 'to speak' yields 'an utterance intended to bring evil or harm,' which is the exact definition of a 'curse'.
Root synthesis allows precise matching with the correct synonymous option.

Key Concept

Root Word Analysis (Latin roots 'male-' and 'dict-')
Estimated Time:45s
Question 3929Question →

The marine surveyor inspected the wooden hull and confirmed that the boat was structurally sound. Which of the following is the closest meaning of the underlined word as used in this sentence?

Show answer & explanation

Answer: solid and in good condition

Answer

solid and in good condition
The correct meaning is 'solid and in good condition'. In technical, mechanical, and maritime contexts, 'sound' means free from defect, decay, or damage, and capable of safely bearing loads or withstanding pressure.

Step-by-Step Solution

1
Analyze the sentence context and identify the role of the underlined word
The word 'sound' is used as an adjective modifying 'boat' and paired with the adverb 'structurally', indicating physical condition and integrity.
Understanding the grammatical role and surrounding clues narrows down which definition of a polysemous word fits.
2
Evaluate the answer choices against the hull inspection context
A boat's hull needs to be sturdy, watertight, and free from rot or damage, which matches the definition 'solid and in good condition'.
Eliminating secondary meanings (such as noise or deep sleep) isolates the definition that fits structural stability.

Key Concept

Identifying the contextual meaning of a multiple-meaning adjective in a maintenance and technical setting
Estimated Time:45s
Question 3930Question →

During the construction of the municipal water filtration facility, the project superintendent warned the engineering team not to cut corners, emphasizing that strict adherence to safety specifications was far more important than beating the deadline. In this sentence, what is the meaning of the phrase cut corners?

Show answer & explanation

Answer: compromise quality or procedural standards to save time and expense

Answer

compromise quality or procedural standards to save time and expense
The phrase 'cut corners' is an idiomatic expression that means to do something in a hasty or careless way, typically by disregarding established rules or standards to economize on time or money. The context of emphasizing 'strict adherence to safety specifications' over 'beating the deadline' clearly indicates that cutting corners refers to sacrificing quality and procedural standards.

Step-by-Step Solution

1
Analyze the sentence context and surrounding clues
The superintendent contrasts 'cut corners' with 'strict adherence to safety specifications' and mentions avoiding it despite the desire to 'beat the deadline.'
Contextual contrast clues establish that the phrase represents an improper action that sacrifices safety or quality for speed.
2
Deduce the figurative meaning of the idiomatic expression
The idiom 'cut corners' means doing something in the easiest, quickest, or cheapest way by omitting necessary steps or disregarding rules.
Idioms cannot be interpreted through the literal definitions of their individual words; their figurative meaning must fit the established context.

Key Concept

Idiomatic Expressions in Context
Estimated Time:45s
Question 3931Question →

A builder uses a 15-foot diagonal support beam to brace a vertical wall. If the base of the beam rests on the flat floor exactly 9 feet away from the bottom of the wall, at what height on the wall, in feet, does the top of the beam attach?

Show answer & explanation

Answer: 12

Answer

12
The physical scenario forms a right triangle where the hypotenuse (the beam) measures 15 feet and one leg (along the floor) measures 9 feet. By using the Pythagorean theorem (a2+b2=c2a^2 + b^2 = c^2), we can find the missing leg by solving 92+b2=1529^2 + b^2 = 15^2. This simplifies to 81+b2=22581 + b^2 = 225, which means b2=144b^2 = 144. Taking the square root of 144 gives a wall height of 12 feet.

Step-by-Step Solution

1
Identify the parts of the right triangle.
Hypotenuse c=15c = 15 feet, base leg a=9a = 9 feet, vertical leg bb is unknown.
The beam forms the hypotenuse opposite the right angle made by the intersection of the vertical wall and flat floor.
2
Apply the Pythagorean theorem.
92+b2=1529^2 + b^2 = 15^2
The Pythagorean theorem (a2+b2=c2a^2 + b^2 = c^2) relates the lengths of the legs of a right triangle to its hypotenuse.
3
Square the known values.
81+b2=22581 + b^2 = 225
To solve for the unknown leg bb, we must first evaluate the squared terms.
4
Isolate the unknown squared variable.
b2=225−81=144b^2 = 225 - 81 = 144
Subtracting 81 from both sides leaves b2b^2 by itself.
5
Take the square root to find the height.
b=144=12b = \sqrt{144} = 12
Taking the square root of b2b^2 gives the actual length of the wall height.

Key Concept

Using the Pythagorean theorem to find the missing leg of a right triangle.
Question 3932Question →

Which of the following words is the closest synonym for EXONERATE?

Show answer & explanation

Answer: Absolve

Answer

Absolve
The word 'exonerate' means to officially absolve or clear someone from fault, blame, or guilt. Therefore, 'absolve' is the direct and accurate synonym.

Step-by-Step Solution

1
Define the target vocabulary term
The verb 'exonerate' means to officially clear someone from an accusation, blame, or guilt.
Establishing the precise definition is required to find an accurate isolated synonym.
2
Evaluate the answer choices against the target definition
'Absolve' means to declare someone free from guilt or responsibility, providing an exact semantic match.
Direct comparison ensures alignment in part of speech, definition, and tone.

Key Concept

Identifying isolated word synonyms through precise definition and distractor elimination
Estimated Time:30s
Question 3933Question →

When an unexpected sensor alert triggered during the field trial, the operations supervisor instructed the crew not to jump the gun until diagnostic telemetry could confirm the reading.

In this sentence, what does the expression jump the gun most nearly mean?

Show answer & explanation

Answer: act prematurely or hastily

Answer

act prematurely or hastily
The expression 'jump the gun' originates from track events where a runner starts before the starting gun fires. In general and technical usage, it figuratively means to act prematurely or start an action before the appropriate time or confirmation. In the given sentence, the supervisor cautions the crew against taking hasty action until diagnostic confirmation is obtained.

Step-by-Step Solution

1
Analyze the context clues in the sentence
The phrase 'until diagnostic telemetry could confirm the reading' indicates that the crew is being cautioned against taking immediate action before full confirmation is available.
Contextual time and contingency clauses help determine the temporal relationship and intent of the idiomatic action.
2
Deduce the figurative meaning of the idiomatic expression
The idiom 'jump the gun' figuratively means to start or act before the proper or designated time, which aligns directly with acting prematurely.
Idioms carry non-literal definitions established through common cultural usage.

Key Concept

Interpreting Idiomatic Expressions in Context
Estimated Time:45s
Question 3934Question →

Proper tire pressure is critical for ensuring the safe operation and fuel efficiency of military transport vehicles. When tires are underinflated, the increased friction causes excessive heat buildup, which can lead to sudden tread separation and dangerous blowouts on rough terrain. Furthermore, low pressure increases rolling resistance, forcing the engine to consume significantly more fuel during long supply convoys. Routine pre-trip pressure checks prevent these mechanical hazards and reduce unnecessary fleet maintenance costs.

Which of the following best expresses the main idea of the passage?

Show answer & explanation

Answer: Maintaining correct tire pressure is essential for the safety and fuel performance of transport vehicles.

Answer

Maintaining correct tire pressure is essential for the safety and fuel performance of transport vehicles.
The correct response directly restates the explicitly stated topic sentence found at the beginning of the passage, summarizing both primary points: vehicle safety and fuel efficiency.

Step-by-Step Solution

1
Locate the explicit topic sentence in the paragraph.
The first sentence directly states: 'Proper tire pressure is critical for ensuring the safe operation and fuel efficiency of military transport vehicles.'
Explicit main ideas are directly stated within the text, frequently in the opening sentence.
2
Evaluate the subsequent sentences to verify they serve as supporting details.
The following sentences provide specific evidence: one explains the safety hazard (heat buildup and blowouts) and the next explains the efficiency impact (increased fuel consumption).
Confirming that remaining details develop the opening claim ensures the topic sentence is indeed the overarching main idea.
3
Match the core claim to the corresponding answer choice.
The statement expressing that maintaining correct tire pressure is essential for safety and fuel performance directly paraphrases the topic sentence.
The correct choice must capture the comprehensive main idea rather than an isolated detail or broad generalization.

Key Concept

Explicit Main Idea
Estimated Time:45s
Question 3935Question →

Complete the technical passage by converting the base verb 'maintain' into an abstract noun and the root 'perceive' into a qualifying adjective. What words correctly complete the statement?

Fill in the blanks below

Consistent mechanical is vital to ensure that even barely defects in the aircraft frame are discovered prior to flight operations.
Show answer & explanation

Answer

The statement is completed by the noun 'maintenance' for the first blank and the adjective 'perceptible' (or 'perceivable') for the second blank.
The first blank requires a noun denoting the act or process of keeping equipment in working order, formed by combining the base 'maintain' with the noun suffix '-ance' (yielding 'maintenance'). The second blank requires an adjective denoting the ability to be detected or discerned, formed by attaching the adjective suffix '-ible' to the root 'perceive' (yielding 'perceptible').

Step-by-Step Solution

1
Analyze the syntactic role required for the first blank.
The position directly following the adjective 'mechanical' and serving as the subject of the clause requires a noun.
A noun phrase is needed to function as the subject preceding the linking verb 'is'.
2
Apply the appropriate noun suffix and stem vowel shift to 'maintain'.
Adding the noun-forming suffix '-ance' with the morphological shift produces 'maintenance'.
The suffix '-ance' forms action or state nouns from verbs, shifting the spelling from 'maintain' to 'mainten-'.
3
Analyze the syntactic role required for the second blank.
The position modifying the plural noun 'defects' following the adverb 'barely' requires an adjective.
Adverbs modify adjectives which in turn modify nouns within the noun phrase.
4
Apply the appropriate adjective suffix to the root 'perceive'.
Adding the adjective-forming suffix '-ible' (or '-able') produces 'perceptible'.
The suffix '-ible' denotes capability or susceptibility ('capable of being perceived'), forming an evaluative adjective.

Key Concept

Noun and Adjective Suffix Morphology and Base Stem Transformations
Question 3936Question →

Renowned for his mastery of painting, engineering, and astronomy, Leonardo da Vinci is widely celebrated as a true polymath. What does the word polymath most nearly mean?

Show answer & explanation

Answer: A person of broad and varied learning

Answer

A person of broad and varied learning
The word 'polymath' is formed from the Greek prefix 'poly-' (meaning 'many') and the Greek root 'math-' (from 'mathema', meaning 'knowledge' or 'learning'). A polymath is therefore a person who possesses extensive knowledge across many different subjects, making 'a person of broad and varied learning' the correct definition.

Step-by-Step Solution

1
Analyze the prefix and root morphemes of the word 'polymath'.
Identify the Greek prefix 'poly-' meaning 'many' or 'much' and the Greek root 'math-' (from 'manthanein'/'mathema') meaning 'learning' or 'knowledge'.
Deconstructing Greek morphological roots helps deduce the foundational meaning of unfamiliar vocabulary.
2
Synthesize the morpheme definitions into a unified definition.
The combined literal meaning is 'having learned much' or 'possessing knowledge across many fields'.
Connecting root meanings provides the accurate semantic definition of the complete word.
3
Match the synthesized definition to the correct answer choice.
The option stating 'a person of broad and varied learning' matches both the morphological structure and the sentence context.
Context clues referencing painting, engineering, and astronomy confirm expertise across multiple disciplines.

Key Concept

Analyzing Greek Roots (poly- and math-)
Estimated Time:45s
Question 3937Question →

The newly appointed expedition leader was tasked with several onerous responsibilities, including hauling heavy supply sledges up steep glaciers, rationing dwindling food supplies in sub-zero blizzards, and navigating treacherous crevasses without radio support.

In the sentence above, what does the underlined word onerous most nearly mean?

Show answer & explanation

Answer: burdensome and demanding

Answer

burdensome and demanding
The phrase 'burdensome and demanding' is correct because the sentence uses the signal word 'including' to present three arduous tasks: hauling heavy sledges, rationing scarce food, and crossing dangerous crevasses. These specific illustrations clearly establish that 'onerous' means involving heavy effort and difficulty.

Step-by-Step Solution

1
Locate the example context clue signal word and the list of examples in the sentence.
The word 'including' introduces three specific duties: 'hauling heavy supply sledges up steep glaciers', 'rationing dwindling food supplies in sub-zero blizzards', and 'navigating treacherous crevasses'.
Signal words such as 'including' or 'such as' provide concrete instances that illustrate the meaning of the unfamiliar target word.
2
Analyze the common characteristics shared by the provided examples.
All three examples involve arduous, exhausting, and difficult physical and mental labor under extreme hardship.
Synthesizing the common quality across the example items reveals the core contextual definition.
3
Match the synthesized meaning to the closest available definition choice.
The phrase 'burdensome and demanding' aligns directly with the grueling tasks described.
The correct contextual synonym must accurately reflect the strenuous nature demonstrated by the illustrative examples.

Key Concept

Using example context clues signaled by words like 'including' or 'such as' to determine the meaning of an unfamiliar adjective.
Estimated Time:45s
Question 3938Question →

The technician required an adaptable power supply that could function under varying electrical loads. Which of the following is the best definition of the word adaptable?

Show answer & explanation

Answer: Capable of being modified to fit new circumstances

Answer

Capable of being modified to fit new circumstances
The word 'adaptable' is formed by joining the base verb 'adapt' (meaning to adjust or modify) with the adjective suffix '-able' (meaning capable of or suitable for). Thus, the word describes something capable of being modified to fit new circumstances.

Step-by-Step Solution

1
Identify the base word and the attached suffix.
The word consists of the verb base 'adapt' and the suffix '-able'.
Deconstructing the word reveals its underlying lexical components.
2
Determine the syntactic role and semantic function of the suffix '-able'.
The suffix '-able' forms adjectives meaning 'capable of,' 'worthy of,' or 'able to be.'
Suffixes alter the base word's grammatical class and modify its core meaning.
3
Combine the meaning of the base word with the suffix.
Combining 'adapt' (to adjust or fit) with '-able' yields 'capable of adjusting or being modified.'
Morphological synthesis produces the correct contextual definition.

Key Concept

Adjective Suffix -able
Estimated Time:30s
Question 3939Question →

The technician detected an imperceptible fluctuation in the electrical current. In this sentence, the word imperceptible most nearly means:

Show answer & explanation

Answer: too subtle or slight to be noticed

Answer

too subtle or slight to be noticed
The word 'imperceptible' combines the negative prefix 'im-' (meaning 'not') with 'perceptible' (capable of being perceived). Therefore, something that is imperceptible is too slight, subtle, or gradual to be detected.

Step-by-Step Solution

1
Isolate the prefix, root, and suffix in the target word
The word breaks down into the prefix 'im-', the root 'percept' (perceive/detect), and the suffix '-ible' (capable of).
Analyzing the morphological components reveals the core meaning of the compound word.
2
Determine the meaning of the assimilated prefix 'im-' in this context
The prefix 'im-' is a phonetic variation of the negative prefix 'in-', meaning 'not' or 'without'.
Before labial consonants like 'p', the negative prefix 'in-' assimilates to 'im-'.
3
Combine the prefix meaning with the base word
'im-' (not) + 'perceptible' (capable of being perceived) means 'not capable of being perceived or noticed'.
Synthesizing the elements confirms that an imperceptible change is one too small or subtle to detect.

Key Concept

Morphological analysis of the assimilated negative prefix 'im-' (meaning 'not')
Estimated Time:45s
Question 3940Question →

Prolonged exposure to chemical vapors produced deleterious effects on the workshop technicians' respiratory health. Which of the following words most nearly means the emphasized word?

Show answer & explanation

Answer: harmful

Answer

harmful
The word 'deleterious' means causing harm or damage. In the context of prolonged exposure to toxic chemical fumes affecting respiratory health, 'harmful' is the precise synonym.

Step-by-Step Solution

1
Analyze the sentence context and target vocabulary word
The target word 'deleterious' describes the negative effects of prolonged chemical vapor exposure on respiratory health.
Contextual clues involving dangerous fumes indicate an outcome that is damaging or hazardous.
2
Eliminate the antonym distractor and morphological traps
The choice 'beneficial' represents the direct opposite meaning (antonym), while 'deliberate' is a morphological lookalike. The choice 'temporary' describes duration rather than injury.
Synonym questions test identifying equivalent meanings while filtering out polar opposite distractors.
3
Select the option with the matching definition
The word 'harmful' directly corresponds to the definition of 'deleterious'.
Both terms denote causing injury, impairment, or damage.

Key Concept

Antonym Distractor Elimination
Estimated Time:45s
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