C1 Advanced · Reading & Use of English · Parte 3

Esercizi di C1 Word Formation (Gratis)

Sviluppa un controllo più flessibile delle famiglie di parole. Scegli la forma che esprime il significato voluto, incluse forme negative e plurali facili da trascurare.

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Questo esercizio, le spiegazioni e il PDF scaricabile sono in inglese.

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Testing the air around us

Use the word in capitals beside each gap to form one word that fits the passage. Consider the part of speech and whether the meaning needs a negative prefix.

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A neighbourhood group bought inexpensive sensors to measure local air pollution. Before publishing the results, they asked a university to check the equipment's Spazio 1RELY. The first readings were Spazio 2CONSIST: two sensors placed beside each other reported sharply different figures. A direct Spazio 3COMPARE with a laboratory instrument confirmed that one sensor needed adjusting.

The researchers explained that a single reading was Spazio 4LIKELY to provide a useful picture of conditions over a whole month. Instead, they recommended a Spazio 5SYSTEM approach, with measurements taken at regular intervals in the same locations. They also warned against confusing a small numerical difference with a change of practical Spazio 6SIGNIFY.

The group welcomed this advice. Full Spazio 7DISCLOSE of the method would allow other residents to understand how the figures had been collected. Although some early results remained Spazio 8CONCLUDE, the project had already taught its volunteers something valuable: collecting data was only the beginning of a careful investigation, not a substitute for one.

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Risposte e spiegazioni

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Domanda 1: Mostra risposta e spiegazione

Risposta: reliability

RELY → reliability. “Check the equipment's reliability” needs a noun after the possessive. Reliability is its ability to give trustworthy results; reliable is an adjective and cannot fill that noun position. The family changes rely to reliable, then reliability: notice the -i- and the ending -ability.

Domanda 2: Mostra risposta e spiegazione

Risposta: inconsistent

CONSIST → inconsistent. “The first readings were inconsistent” needs an adjective describing the readings. “Sharply different figures” from neighbouring sensors shows disagreement, so the negative prefix in- is essential. Consistency is a noun; consistent would contradict the evidence.

Domanda 3: Mostra risposta e spiegazione

Risposta: comparison

COMPARE → comparison. “A direct comparison with a laboratory instrument” requires a singular countable noun after a direct. Comparison names the act of checking the two instruments against each other. Comparative is normally an adjective here and would leave the noun missing; comparing does not fit a direct ... with in this sentence.

Domanda 4: Mostra risposta e spiegazione

Risposta: unlikely

LIKELY → unlikely. “A single reading was unlikely to provide a useful picture ... over a whole month.” The recommendation for repeated measurements establishes the negative meaning. Add un- to likely; likelihood would require a different structure. Unlikely to + verb means not expected to happen.

Domanda 5: Mostra risposta e spiegazione

Risposta: systematic

SYSTEM → systematic. “A systematic approach” needs an adjective before the noun. “At regular intervals in the same locations” describes an organised method. Systemic means affecting an entire system and does not describe the step-by-step measurement procedure intended here.

Domanda 6: Mostra risposta e spiegazione

Risposta: significance

SIGNIFY → significance. “A change of practical significance” requires a noun after the adjective practical. Significance means importance: the researchers distinguish a measurable difference from one that matters. Significant is an adjective and would need to modify a noun rather than follow practical in this phrase.

Domanda 7: Mostra risposta e spiegazione

Risposta: disclosure

DISCLOSE → disclosure. “Full disclosure of the method would allow...” uses a noun phrase as the sentence's subject. Disclosure means making the procedure available for inspection. Disclosed is a participle and cannot be the head noun after full. Notice the ending -sure rather than an invented -ment form.

Domanda 8: Mostra risposta e spiegazione

Risposta: inconclusive

CONCLUDE → inconclusive. “Some early results remained inconclusive” needs an adjective after remained. Although introduces a contrast: results did not settle the scientific question, but volunteers learned something. Conclusive would reverse that meaning; conclusion is a noun. Form conclusive, then add in-.

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