---
title: Record-breakers: the fastest and the slowest — a lesson of Mova's school · trees and pragmatics
description: «Record-breakers: the fastest and the slowest», a lesson of the biology course of Mova's primary school, sentence by sentence with dependency trees and pragmatics. It begins: Fastest at what?
---

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# Record-breakers: the fastest and the slowest

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Lesson 185 of the biology course of Mova's primary school: 15 sentences, each with its syntax tree and pragmatics. The lessons are written for Mova, and their agreed trees are part of Mova corpus 0.4 (CC BY-SA 4.0). How Mova does on its tests: [the lesson at school](https://md.mova.elamur.ai/free/en/school-run/biology/185-record-breakers-the-fastest-and-the-slowest/).

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- [0](https://md.mova.elamur.ai/free/en/corpora/school/biology/185-record-breakers-the-fastest-and-the-slowest/0/) — Fastest at what?
- [1](https://md.mova.elamur.ai/free/en/corpora/school/biology/185-record-breakers-the-fastest-and-the-slowest/1/) — A falcon falling through the sky, a cheetah sprinting, a pronghorn running for many minutes and an ant snapping its jaws are all record-breakers, but each in a different race.
- [2](https://md.mova.elamur.ai/free/en/corpora/school/biology/185-record-breakers-the-fastest-and-the-slowest/2/) — The peregrine falcon is the fastest of all when it dives: it folds its wings and drops at a pigeon like a bullet, faster than a racing car on a straight track.
- [4](https://md.mova.elamur.ai/free/en/corpora/school/biology/185-record-breakers-the-fastest-and-the-slowest/4/) — Some of the fastest movements are tiny: a trap-jaw ant's jaws and a soldier termite's snapping jaws close faster than you could ever blink.
- [5](https://md.mova.elamur.ai/free/en/corpora/school/biology/185-record-breakers-the-fastest-and-the-slowest/5/) — The peregrine falcon is the fastest animal, diving at over three hundred kilometres an hour with its wings folded like a bullet, and bumps in its nostrils help it breathe.
- [6](https://md.mova.elamur.ai/free/en/corpora/school/biology/185-record-breakers-the-fastest-and-the-slowest/6/) — The cheetah is the fastest land animal, running over a hundred kilometres an hour with long legs, a bendy spine and a big heart, but only for a short dash before it gets too hot.
- [7](https://md.mova.elamur.ai/free/en/corpora/school/biology/185-record-breakers-the-fastest-and-the-slowest/7/) — The pronghorn, a deer-like animal of North American grasslands, can run fast for a long time, with big lungs and heart and light bones, and some scientists think extinct American cheetahs once made it so fast.
- [8](https://md.mova.elamur.ai/free/en/corpora/school/biology/185-record-breakers-the-fastest-and-the-slowest/8/) — The sailfish is one of the fastest fish, uses its long thin body and sail to hunt, and changes colour when hunting in groups.
- [9](https://md.mova.elamur.ai/free/en/corpora/school/biology/185-record-breakers-the-fastest-and-the-slowest/9/) — The tiger beetle runs so fast for its size that its eyes cannot keep up, so it stops to look again; for its size it is faster than a cheetah.
- [11](https://md.mova.elamur.ai/free/en/corpora/school/biology/185-record-breakers-the-fastest-and-the-slowest/11/) — Mexican free-tailed bats may fly over a hundred and sixty kilometres an hour with long narrow wings, which may make them the fastest in level flight, though not all scientists agree.
- [12](https://md.mova.elamur.ai/free/en/corpora/school/biology/185-record-breakers-the-fastest-and-the-slowest/12/) — Trap-jaw ants lock their jaws open and snap them shut faster than almost any other animal movement, and they can snap against the ground to flip into the air.
- [13](https://md.mova.elamur.ai/free/en/corpora/school/biology/185-record-breakers-the-fastest-and-the-slowest/13/) — Some soldier termites press twisted jaws together until they slip, like snapping fingers, and this snap is one of the fastest movements known in any animal.
- [14](https://md.mova.elamur.ai/free/en/corpora/school/biology/185-record-breakers-the-fastest-and-the-slowest/14/) — The sloth is one of the slowest mammals, because its leafy food gives little energy, and being slow helps it hide from hawks, which spot movement.
- [15](https://md.mova.elamur.ai/free/en/corpora/school/biology/185-record-breakers-the-fastest-and-the-slowest/15/) — Horses are strong runners over long distances, and they can doze standing up because tendons (strong cords joining muscles to bones) lock their legs, ready to run the moment they wake.
- [16](https://md.mova.elamur.ai/free/en/corpora/school/biology/185-record-breakers-the-fastest-and-the-slowest/16/) — A real roadrunner is a bird that runs about thirty kilometres an hour, and a real coyote can run about twice as fast.

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