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Topic Development

Preguntas sobre el propósito del texto: ¿esta frase aporta algo aquí? ¿El texto cumple su objetivo?

ACT (enhanced, 2025–)EnglishPeso: ≈38–43 %
Practicar Topic Development gratis20 preguntas originales de esta destreza, con corrección al instante.

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Propósito del texto, relevancia de una frase, añadir o quitar información.

Claves

Estrategia paso a paso

Trampas habituales

Ejemplo resuelto

Un párrafo sobre cómo se presta en una biblioteca + «su abuela era bibliotecaria» → No: interrumpe la explicación.

Preguntas de ejemplo

Intenta responder antes de abrir la solución. Las preguntas están en el idioma del examen.

Pregunta 1

Dificultad fácil≈ 1 min

Passage IV — Celery and Cornstarch

[1] In a quiet studio, a woman stands on a tray of gravel and watches a film projected on the wall. On the screen, an actor is hiking up a mountain trail. Watching the actor closely, the gravel crunches under her feet (31) in time with each of his steps, and a microphone a few feet away records every sound.

[2] This work is called Foley, after Jack Foley, a sound editor who (32) developed many of its techniques at Universal Studios in the late 1920s. Films record dialogue on set, but most of the other sounds an audience hears is (33) added later. Microphones on a set are aimed at the actors’ mouths. They pick up speech clearly but miss quieter sounds, such as footsteps, rustling clothes, and the clink of a cup set down on the surface of a tabletop. (34) Foley artists recreate these sounds in a studio, one scene at a time.

[3] Foley studios are usually lined with soundproof panels. (35) A bundle of celery snapped in two can stand in for a breaking bone. Cornstarch squeezed inside a leather pouch sounds remarkably like footsteps in snow. A pair of leather gloves, flapped quickly, makes a convincing sound. (36)

[4] The goal is not to copy reality exactly. Audiences, it turns out, are totally down with (37) sounds that match what they expect to hear, even when those sounds are not what a real event would produce. A real punch, recorded up close, sounds like a dull thud, Foley artists therefore (38) often slap a raw steak or punch a head of cabbage to make a movie fight sound more dramatic. (39)

[5] The next time a film makes you wince at the sound of a breaking bone, listen closely. You might be hearing a vegetable.

Underlined portion (36): Which choice most specifically identifies the sound the gloves are used to imitate? If the original version is best, choose NO CHANGE.

  1. A. NO CHANGE
  2. B. is easy to find in almost any studio.
  3. C. can be bought cheaply at most stores.
  4. D. sounds like a bird’s wings beating.
Ver respuesta y explicación

Respuesta correcta: D. sounds like a bird’s wings beating.

Explicación

Like the celery (a breaking bone) and the cornstarch (footsteps in snow), the gloves should be matched with a specific sound. “Sounds like a bird’s wings beating” names it.

“Makes a convincing sound” is vague. Being easy to find or cheap says nothing about which sound the gloves imitate.

Pregunta 2

Dificultad media≈ 1 min

Passage V — Mapping the Curb

[1] When Marisol Vega’s grandfather began using a wheelchair, the two of them discovered that their neighborhood was full of obstacles they had never noticed. A curb without a ramp could turn a short trip to the pharmacy into a long detour. A cracked or tilted slab of sidewalk was even worse, it could (41) tip the chair forward.

[2] Nevertheless, (42) Marisol, then a high school sophomore, decided to record every barrier within a mile of her home. Armed with a phone, a tape measure, and a notebook, she walked and covered on foot (43) each block, photographing missing ramps, broken slabs, and poles planted in the middle of the path. At every stop, she recorded what she found. (44)

[3] By winter, Marisol’s notebook held more than three hundred entries. She typed them into a free online mapping program, marking each problem with a colored pin: red for barriers that blocked a wheelchair completely and yellow for those that only slowed it down. In January, she presented the finished map to the citys’ (45) public works department. The engineers there were super psyched about (46) what she had built.

[4] Marisol’s map arrived at a useful moment. (47) The city had money set aside for sidewalk repairs but no complete list of where repairs were most needed. Within two years, crews had installed forty new curb ramps and repaired and fixed (48) more than a hundred broken slabs. Several of the new ramps sit on the very corners that had once forced her grandfather into long detours. (49) Marisol, now a college engineering student, still updates the map every spring.

Underlined portion (44): Which choice most effectively shows how thorough Marisol’s survey was? If the original version is best, choose NO CHANGE.

  1. A. NO CHANGE
  2. B. logged each barrier’s location, width, and severity on a five-point scale.
  3. C. wrote down a few of the things that she happened to notice along the way that afternoon.
  4. D. found the work tiring but also more interesting than she had expected.
Ver respuesta y explicación

Respuesta correcta: B. logged each barrier’s location, width, and severity on a five-point scale.

Explicación

Recording the exact location, width, and severity of every barrier shows a careful, systematic survey, which is what the question asks for.

NO CHANGE is too vague to show thoroughness. Writing down “a few of the things she noticed” suggests the opposite of a thorough survey. How she felt about the work does not describe the survey itself.

Pregunta 3

Dificultad difícil≈ 1 min

Passage II — Learning the Grain

[1] The canoe had spent eleven years upside down in my uncle’s barn before I dragged it into the daylight. Its cedar strips had turned gray, and the varnish had cracked into a pattern like dried mud. Covered in dust and pigeon feathers, my uncle had clearly forgotten the boat. (11)

[2] Restoring it would require three things; patience, (12) a heat gun, and a great deal of sandpaper. I already owned the last two. Patience, as my uncle kept reminding me, I would have to learn off of (13) the wood itself.

[3] I have always enjoyed working outdoors. (14) For the first week, I sanded in quick circles, the way I had seen people do in online videos. The wood came up fuzzy and scarred. Then my uncle ran his thumb along one strip and pointed out the faint lines inside it. The fibers in every strip, he explained, leans (15) the same way, like the hair on a dog’s back. Sanding with the grain leaves the surface smooth; to sand against it lifts (16) tiny splinters.

[4] After that, the work went faster. Over the next two months, I stripped the old varnish, patched a long split with a thin piece of new cedar, and brushed on three coats of marine varnish. The patch was a shade lighter than the rest of the hull at first, but after a few weeks in the sun it blended (17) into the surrounding wood.

[5] Last August, I finally carried the canoe down to the lake. It floated level and dry, its hull glowing amber in the late sun, (18) and my uncle, standing on the dock, declared it more smoother (19) than it had been on the day he bought it.

If the writer deleted underlined portion (18), adjusting the punctuation as needed, the paragraph would primarily lose:

  1. A. a vivid image that contrasts the restored hull with the gray, cracked surface described earlier.
  2. B. an explanation of why cedar is often used to build canoes.
  3. C. evidence that the canoe still leaked after it was restored.
  4. D. a detail suggesting that the uncle doubted whether the narrator had really finished the work properly.
Ver respuesta y explicación

Respuesta correcta: A. a vivid image that contrasts the restored hull with the gray, cracked surface described earlier.

Explicación

The phrase “its hull glowing amber in the late sun” is a vivid description of the finished canoe, and it echoes by contrast Paragraph 1, where the strips had “turned gray” and the varnish had cracked.

The phrase says nothing about why cedar is used. It cannot be evidence of leaking, because the same sentence says the canoe “floated level and dry.” And the uncle praises the canoe, so the phrase shows no doubt on his part.

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Practicar Topic Development gratis20 preguntas originales de esta destreza, con corrección al instante.

Otras destrezas de English

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