Complete the sentence with the correct particle: 'The community has to cut its water use ______ during the dry months, because the reservoir level keeps falling.'
Elige una opción para comprobar tu respuesta.
Respuesta correcta: C)off
💡 Explicación
'Cut off' means to reduce or stop a supply, and the falling reservoir shows why consumption must be reduced.
Ver respuesta
Respuesta correcta: C)off
A)on'Cut on' is not an English expression, so it cannot complete this sentence.
B)of'Cut of' is not an English expression, since the verb needs the particle 'off' here.
C)off'Cut off' means to reduce or stop a supply, which matches the falling reservoir level.
D)up'Cut up' means to divide something into pieces, and it does not describe reducing water use.
💡 Explicación
'Cut off' means to reduce or stop a supply, and the falling reservoir shows why consumption must be reduced.
Pregunta 2
Pregunta 2 · D4Bloom: Understand
English class in Chalchuapa, SV.
A geography text explains the water cycle. What kind of process does the water cycle represent?
Elige una opción para comprobar tu respuesta.
Respuesta correcta: B)a natural cycle
💡 Explicación
The water cycle is the natural movement of water between the ocean, the air and the land, so it is a cycle of nature rather than a human process.
Ver respuesta
Respuesta correcta: B)a natural cycle
A)a chemical processThe water cycle needs no laboratory or manufactured input, so it is not a chemical process.
B)a natural cycleThe water cycle is evaporation, condensation and rain returning water to the sea, which is natural.
C)a legal procedureNo law, court or official rule is involved in how water moves between air and land.
D)a farming methodFarming methods are human activities, and the water cycle happens without any human action.
💡 Explicación
The water cycle is the natural movement of water between the ocean, the air and the land, so it is a cycle of nature rather than a human process.
Pregunta 3
Pregunta 3 · D4Bloom: Analyze
English class in Suchitoto, SV.
A report says: 'Groundwater levels in the dry corridor have fallen sharply, and wells now reach deeper than before.' What does the report mainly signal about water in that region?
Elige una opción para comprobar tu respuesta.
Respuesta correcta: A)a rising need for it
💡 Explicación
Falling groundwater levels and deeper wells mean the same supply is being taken faster than it returns, which signals a growing scarcity.
Ver respuesta
Respuesta correcta: A)a rising need for it
A)a rising need for itFalling levels and deeper wells together signal that demand is outrunning the supply.
B)a cheaper alternative to itThe report describes difficulty obtaining water, not a cheaper way of buying it.
C)a new source of itNo new source of water is mentioned anywhere in the report.
D)a safer way to store itNothing in the report concerns storage, so safety of storage is not the point.
💡 Explicación
Falling groundwater levels and deeper wells mean the same supply is being taken faster than it returns, which signals a growing scarcity.
Pregunta 4
Pregunta 4 · D4Bloom: Remember
English class in Metapan, SV.
Choose the correct form: 'Plastic bottles ______ in the special bins behind the school, and the material is sold to a local factory.'
Elige una opción para comprobar tu respuesta.
Respuesta correcta: D)recycles
💡 Explicación
'Recycles' is the third person singular present simple, which matches the subject 'bottles' before the pronoun 'and'.
Ver respuesta
Respuesta correcta: D)recycles
A)recycled'Recycled' is the past participle and would need an auxiliary such as 'are' before it.
B)recycle'Recycle' is the base form, and the plural subject requires the -s ending.
C)recycling'Recycling' is the -ing form and would need an auxiliary such as 'are' before it.
D)recycles'Recycles' is the third person singular form that a plural subject takes in the present simple.
💡 Explicación
'Recycles' is the third person singular present simple, which matches the subject 'bottles' before the pronoun 'and'.
Pregunta 5
Pregunta 5 · D6Bloom: Remember
English class in La Libertad, SV.
Choose the correct past form: 'The dry scrub near the coast ______ for three days before the fire brigade arrived in Candelaria.'
Elige una opción para comprobar tu respuesta.
Respuesta correcta: B)burnt
💡 Explicación
'Burnt' is the past simple of 'burn', and it matches the completed three-day fire described in the past.
Ver respuesta
Respuesta correcta: B)burnt
A)burns'Burns' is the third person present simple, and the fire is described in the past.
B)burnt'Burnt' is the irregular past simple of 'burn' and fits the completed fire.
C)burning'Burning' is the -ing form and would need an auxiliary such as 'was' before it.
D)burn'Burn' is the base form, and a base form cannot fill the past slot after the subject.
💡 Explicación
'Burnt' is the past simple of 'burn', and it matches the completed three-day fire described in the past.
Pregunta 6
Pregunta 6 · D6Bloom: Apply
English class in Apaneca, SV.
Complete the sentence with the correct particle: 'Before the storm reached the coast, fishermen ______ their engines and sailed back to the harbour.'
Elige una opción para comprobar tu respuesta.
Respuesta correcta: B)puts out
💡 Explicación
'Put out' means to extinguish a fire, and putting out an engine is the standard way to stop it safely.
Ver respuesta
Respuesta correcta: B)puts out
A)puts off'Put off' means to delay or postpone, and the fishermen stopped at once.
B)puts out'Put out' is the standard expression for extinguishing something, including an engine.
C)puts up'Put up' means to raise or display, and it does not stop a machine.
D)puts away'Put away' means to store something, and the fishermen left rather than storing their engines.
💡 Explicación
'Put out' means to extinguish a fire, and putting out an engine is the standard way to stop it safely.
Pregunta 7
Pregunta 7 · D6Bloom: Understand
English class in Conchagua, SV.
A text describes bare slopes where rain once reached a forest canopy, and now the top layers of soil have been carried downhill by runoff. What process does the text describe?
Elige una opción para comprobar tu respuesta.
Respuesta correcta: A)a gradual loss of topsoil
💡 Explicación
When vegetation is removed, rain runs off bare ground and takes the upper soil with it, which is soil erosion.
Ver respuesta
Respuesta correcta: A)a gradual loss of topsoil
A)a gradual loss of topsoilTopsoil carried downhill by runoff after vegetation loss is the definition of soil erosion.
B)the spread of fireNo fire is mentioned anywhere in the description, so the process is not a fire.
C)the drying of riversThe text concerns soil on slopes, and it says nothing about rivers drying up.
D)the melting of iceNo ice or snow appears in the description, so melting is not involved.
💡 Explicación
When vegetation is removed, rain runs off bare ground and takes the upper soil with it, which is soil erosion.
Pregunta 8
Pregunta 8 · D6Bloom: Analyze
English class in Intipuca, SV.
A school report states: 'Our recycling group collected ninety kilograms of plastic in one term and helped many families.' What is the main weakness of the report?
Elige una opción para comprobar tu respuesta.
Respuesta correcta: C)a missing comparison
💡 Explicación
The weight is a real measurement, but 'many families' has no number, so the reader cannot judge the scale of the second claim.
Ver respuesta
Respuesta correcta: C)a missing comparison
A)an unclear measurementNinety kilograms is a precise measurement, so the figures are not unclear.
B)an obvious mistakeNothing in the report contradicts itself, so there is no mistake to point out.
C)a missing comparison'Many families' has no number attached, so the second claim cannot be compared with the first.
D)an irrelevant dateNo date is needed to describe one term of work, so the date is not the weakness.
💡 Explicación
The weight is a real measurement, but 'many families' has no number, so the reader cannot judge the scale of the second claim.
Pregunta 9
Pregunta 9 · D6Bloom: Remember
English class in Santa Ana, SV.
Which environmental term means the permanent disappearance of a species from Earth?
Elige una opción para comprobar tu respuesta.
Respuesta correcta: A)Extinction
💡 Explicación
Extinction occurs when the last living member of a species dies. It differs from a species disappearing only from a particular region.
Ver respuesta
Respuesta correcta: A)Extinction
A)ExtinctionExtinction means that a species no longer has any living members anywhere on Earth.
B)MigrationMigration means movement between locations; the species continues to exist.
C)ConservationConservation means protecting species or resources rather than their disappearance.
D)AdaptationAdaptation involves characteristics that help organisms survive, not the disappearance of a species.
💡 Explicación
Extinction occurs when the last living member of a species dies. It differs from a species disappearing only from a particular region.
Pregunta 10
Pregunta 10 · D6Bloom: Remember
English class in Cuyululu, SV.
Choose the correct past form: 'When the inspectors reached the mine, they found that the waste had already ______ into the river downstream.'
Elige una opción para comprobar tu respuesta.
Respuesta correcta: A)led
💡 Explicación
'Led' is the irregular past of 'lead', and the waste is shown moving towards the river, not resting there.
Ver respuesta
Respuesta correcta: A)led
A)led'Led' is the irregular past simple of 'lead' and describes waste moving towards the river.
B)lay'Lay' is the past of 'lie', which describes resting in a place rather than moving.
C)lain'Lain' is not the past of 'lead', and it also describes a resting position.
D)liddedAdding -ed to a base form that already ends in -d does not produce a real past here.
💡 Explicación
'Led' is the irregular past of 'lead', and the waste is shown moving towards the river, not resting there.
Pregunta 11
Pregunta 11 · D8Bloom: Apply
English class in San Salvador, SV.
A school in Santa Ana installs taps that use less water and repairs leaking pipes. Complete its campaign slogan: 'Help us ______ water by preventing unnecessary use.'
Elige una opción para comprobar tu respuesta.
Respuesta correcta: A)conserve
💡 Explicación
Conserve is the appropriate verb because both measures reduce wasted water. The slogan describes protecting a resource through efficient use.
Ver respuesta
Respuesta correcta: A)conserve
A)conserveTo conserve water means to use it carefully and avoid wasting it, as efficient taps and repaired pipes do.
B)contaminateTo contaminate water means to make it impure, which does not describe preventing waste.
C)dischargeTo discharge water means to release it; the campaign focuses on reducing unnecessary use.
D)evaporateTo evaporate water means to turn it into vapor, not to prevent waste through careful use.
💡 Explicación
Conserve is the appropriate verb because both measures reduce wasted water. The slogan describes protecting a resource through efficient use.
Pregunta 12
Pregunta 12 · D8Bloom: Understand
English class in San Miguel, SV.
A label says: 'This packaging is biodegradable under suitable conditions.' What does 'biodegradable' mean?
Elige una opción para comprobar tu respuesta.
Respuesta correcta: A)It can be broken down by microorganisms.
💡 Explicación
Biodegradable describes a material that microorganisms can break down. The label's reference to suitable conditions matters because the process depends on the environment.
Ver respuesta
Respuesta correcta: A)It can be broken down by microorganisms.
A)It can be broken down by microorganisms.Biodegradable materials can undergo decomposition through the activity of microorganisms under appropriate conditions.
B)It can be used indefinitely without wearing out.Indefinite reuse concerns durability; biodegradability describes decomposition by living organisms.
C)It can be melted and shaped into any new product.Melting and reshaping concern material processing, not biological decomposition.
D)It disappears immediately when exposed to sunlight.Biodegradation does not mean immediate disappearance, and sunlight alone does not define the process.
💡 Explicación
Biodegradable describes a material that microorganisms can break down. The label's reference to suitable conditions matters because the process depends on the environment.
Pregunta 13
Pregunta 13 · D8Bloom: Analyze
English class in Jiquilisco, SV.
A text argues that planting trees along a riverbank is the best way to stop erosion, but the only figure it gives shows that fewer than twenty seedlings survived. What is the main problem with the argument?
Elige una opción para comprobar tu respuesta.
Respuesta correcta: B)the evidence contradicts the claim
💡 Explicación
The argument claims trees are the best solution while its own data shows very low survival, so the evidence works against the conclusion.
Ver respuesta
Respuesta correcta: B)the evidence contradicts the claim
A)the writer repeats one ideaThe paragraph presents one position with a single figure, so nothing is repeated.
B)the evidence contradicts the claimLow survival of the seedlings counts against the claim that this is the best method.
C)the conclusion is missingThe paragraph does reach a conclusion, since it names tree planting as the best answer.
D)the topic sentence is too longTopic sentence length is a style matter and not the weakness in the reasoning here.
💡 Explicación
The argument claims trees are the best solution while its own data shows very low survival, so the evidence works against the conclusion.
Pregunta 14
Pregunta 14 · D8Bloom: Remember
English class in San Agustin, SV.
Choose the correct option: 'The inspectors have ______ yet whether the spill reached the wells, so the village is still waiting for an answer.'
Elige una opción para comprobar tu respuesta.
Respuesta correcta: D)not established
💡 Explicación
'Have not established' is the present perfect with not, and 'yet' in that construction is what makes the sentence mean the answer is still pending.
Ver respuesta
Respuesta correcta: D)not established
A)did not establishedThe auxiliary 'did' belongs to the past simple, but the sentence uses 'have', so this form is wrong.
B)not establishing'Not establishing' would need an auxiliary such as 'are', and 'yet' does not fit that structure.
C)establish'Establish' alone cannot follow 'have', and it carries no idea of an unfinished action.
D)not established'Have not established yet' is the correct present perfect with not, and it explains the waiting.
💡 Explicación
'Have not established' is the present perfect with not, and 'yet' in that construction is what makes the sentence mean the answer is still pending.
Pregunta 15
Pregunta 15 · D8Bloom: Remember
English class in Sesori, SV.
Choose the correct form: 'That factory ______ almost half the energy it buys, because the old boilers lose so much heat.'
Elige una opción para comprobar tu respuesta.
Respuesta correcta: C)wastes
💡 Explicación
'Wastes' is the third person singular present simple, which matches the subject 'that factory' before the pronoun 'it'.
Ver respuesta
Respuesta correcta: C)wastes
A)wasted'Wasted' is the past simple, and the sentence describes a fact that is still true.
B)waste'Waste' is the base form, and a base form cannot follow the subject here.
C)wastes'Wastes' is the third person singular form that a singular subject takes.
D)wasting'Wasting' is the -ing form and would need an auxiliary such as 'is' before it.
💡 Explicación
'Wastes' is the third person singular present simple, which matches the subject 'that factory' before the pronoun 'it'.
Pregunta 16
Pregunta 16 · D8Bloom: Apply
English class in Armenia, SV.
Complete the sentence with the correct particle: 'Turn the heating ______ at night, or the plants near the window will be damaged by the cold.'
Elige una opción para comprobar tu respuesta.
Respuesta correcta: B)down
💡 Explicación
'Turn down' means to reduce the level of a device, and lowering the heat protects the plants near the window.
Ver respuesta
Respuesta correcta: B)down
A)up'Turn up' means to increase the level, and the plants would be exposed to more heat.
B)down'Turn down' means to reduce a level, which is how the heating is lowered at night.
C)on'Turn on' means to activate a device, and that would start the heating rather than reduce it.
D)off'Turn off' means to stop a device completely, and the sentence asks for a reduction rather than a shutdown.
💡 Explicación
'Turn down' means to reduce the level of a device, and lowering the heat protects the plants near the window.
Pregunta 17
Pregunta 17 · D10Bloom: Understand
English class in San Miguel, SV.
A company describes a fuel as 'renewable' because its source can be replenished. Which interpretation avoids adding a claim that the word does not support?
Elige una opción para comprobar tu respuesta.
Respuesta correcta: D)The fuel comes from a source that can be replenished, but its environmental impacts require separate assessment.
💡 Explicación
Renewable refers to the replenishment of a resource. Claims about emissions or production impacts need additional evidence.
Ver respuesta
Respuesta correcta: D)The fuel comes from a source that can be replenished, but its environmental impacts require separate assessment.
A)The fuel releases no pollutants when used.Renewable describes replenishment of the source; it does not guarantee pollution-free use.
B)The fuel is available in unlimited quantities at every moment.A renewable resource can still have limits on how much is available and how quickly it is replenished.
C)The fuel causes no environmental damage during production.Renewability does not establish that production has no environmental effects.
D)The fuel comes from a source that can be replenished, but its environmental impacts require separate assessment.This interpretation preserves the meaning of renewable without assuming that replenishment eliminates all environmental impacts.
💡 Explicación
Renewable refers to the replenishment of a resource. Claims about emissions or production impacts need additional evidence.
Pregunta 18
Pregunta 18 · D10Bloom: Analyze
English class in Mejicanos, SV.
Read the notice: 'Residents may place clean paper and metal cans in the recycling bin. Food scraps belong in the compost container. Batteries must be taken to a special collection point.' Which distinction organizes these instructions?
Elige una opción para comprobar tu respuesta.
Respuesta correcta: A)Waste is separated according to the treatment it requires.
💡 Explicación
The notice classifies waste by its appropriate processing route. Recycling, composting, and special collection serve different material types.
Ver respuesta
Respuesta correcta: A)Waste is separated according to the treatment it requires.
A)Waste is separated according to the treatment it requires.The notice assigns recyclable materials, compostable scraps, and batteries to different collection routes based on their treatment needs.
B)All household waste can be processed in the recycling bin.The notice explicitly sends food scraps and batteries to containers or collection points other than the recycling bin.
C)Waste is separated according to its purchase price.The instructions mention material types and disposal routes, but provide no information about prices.
D)Only materials made from plants need separate collection.Metal cans and batteries also receive specific collection instructions, so separation is not limited to plant-based materials.
💡 Explicación
The notice classifies waste by its appropriate processing route. Recycling, composting, and special collection serve different material types.
Pregunta 19
Pregunta 19 · D10Bloom: Remember
English class in San Fernando, SV.
Choose the correct form: 'Under the new rule, batteries cannot be ______ into the household waste, and shops must take them back instead.'
Elige una opción para comprobar tu respuesta.
Respuesta correcta: D)thrown
💡 Explicación
'Thrown' is the past participle of 'throw', and 'cannot be thrown' is the passive form the rule requires.
Ver respuesta
Respuesta correcta: D)thrown
A)throwedAdding -ed to 'throw' does not give its past participle, because this verb is irregular.
B)throw'Throw' is the base form, and a passive sentence needs the participle after 'be'.
C)throwing'Throwing' is the -ing form, and the sentence uses the modal 'can' with a passive.
D)thrown'Thrown' is the irregular past participle of 'throw' and fits after 'be'.
💡 Explicación
'Thrown' is the past participle of 'throw', and 'cannot be thrown' is the passive form the rule requires.
Pregunta 20
Pregunta 20 · D10Bloom: Remember
English class in San Salvador, SV.
Which term specifically names harmful substances introduced into the air?
Elige una opción para comprobar tu respuesta.
Respuesta correcta: C)Air pollution
💡 Explicación
Air pollution names contamination of the atmosphere by harmful substances. The other terms describe soil loss or actions to protect resources.
Ver respuesta
Respuesta correcta: C)Air pollution
A)Soil erosionSoil erosion is the removal of soil by processes such as wind or flowing water, not the introduction of harmful substances into the air.
B)Habitat restorationHabitat restoration means helping a damaged habitat recover, not contaminating the atmosphere.
C)Air pollutionAir pollution refers to harmful substances present in the atmosphere.
D)Water conservationWater conservation means preventing unnecessary water use; it does not name atmospheric contamination.
💡 Explicación
Air pollution names contamination of the atmosphere by harmful substances. The other terms describe soil loss or actions to protect resources.
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