The body's rough side: burps, farts, snot, sneezes, hiccups and poo
Tests: 4 of 12 right · Exam: 0 of 4 right · Kind: plain · Understood: 9 of 16 · Run: 2026-10-18, commit f3c23ea72
Lesson 364 of the biology course of Mova's primary school, as Mova's small model took its tests: it had read this lesson and the ones before it and learned from their exercises. Each test shows the options in the order the student saw them, its choice, the right answer, the score of every option and why it chose. The lesson itself, sentence by sentence with trees and pragmatics: the lesson in the corpora.
Every question of this lesson and each of its options parsed by Mova, with trees and pragmatics: the lesson's questions in the corpora.
Test 1 · wrong ✗
«had a can of cola and now I can't stop burping, why lol» What is the reason?
- 1. Cola makes the stomach shrink so the air gets squeezed out — ← Mova's choice · score 2
- 2. The bubbles of carbon dioxide in the drink come back up — ✓ the right answer · no support
- 3. Burping is caused by sugar only — no support
- 4. Cola is made of air — no support
Why: It took the question to ask why something happens (its cause). It chose option 1 with score 2, the only option with support. Its support: lesson 364, line 2: «Think of a fizzy drink: shake it and the gas wants out. Your stomach is the same, so after a can of cola the gas comes back up as a burp.», reached through the cause of the sentence the question matched. What matched: the same doer «stomach» (+2). The right option, 2, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics
Test 2 · wrong ✗
Why do beans make people windier than chips?
- 1. Beans are full of tiny air bubbles that get trapped inside them when they are cooked — ← Mova's choice · score 2
- 2. Chips soak up all the gas — no support
- 3. Beans have more fibre for the gut bacteria to break down into gas — ✓ the right answer · no support
- 4. Beans are cooked in fizzy water — score 2
Why: It took the question to ask why something happens (its cause). It chose option 1 with score 2, tied with another option at 2 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 348, line 10: «Raw or undercooked kidney beans contain a natural substance that makes people sick, proper boiling destroys it, and tinned beans are already cooked and safe.», reached through the option's own match among the sentences about the question's things. What matched: the same action «cook» (+2). The right option, 3, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics
Test 3 · wrong ✗
«green snot = I need antibiotics, mum» What is right?
- 1. Yes, green snot always means bacteria — score -4
- 2. Not always; the green comes from white blood cells fighting any germs — ✓ the right answer · no support
- 3. Yes, green snot means you are allergic — ← Mova's choice · score -3
- 4. No, green snot means you ate spinach — score -3
Why: It took the question to ask which statement is true. It chose option 3 with score -3, tied with another option at -3 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 364, line 9: «Green snot does not always mean bacteria: the colour comes from a substance in white blood cells fighting germs.», reached through the option's own match among the sentences about the question's things. Against it: one says «not», the other does not (counts against) (-3). The right option, 2, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics
Test 4 · wrong ✗
Why might a cold spread faster in a class full of nose pickers?
- 1. Nose picking makes the germs grow bigger and stronger — no support
- 2. Colds spread through bogeys flying through the air across the classroom — no support
- 3. Picking puts germs on fingers, and fingers touch everything — ✓ the right answer · no support
- 4. Picking makes noses run faster — ← Mova's choice · score 4
Why: It took the question to ask why something happens (its cause). It chose option 4 with score 4, the only option with support. Its support: lesson 362, line 17: «A thin tube joins each middle ear to the back of the throat to let air in and out; on a plane, swallowing, yawning or chewing opens it, and a cold can block it…», reached through the option's own match among the sentences about the question's things. What matched: the same action «make» (+2); a different thing acted on (counts against) (+2). The right option, 3, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics
Test 5 · right ✓
Why do people sneeze into their elbow and not their hand?
- 1. Sneezing into hands hurts the fingers — no support
- 2. Hands touch door handles and people, elbows do not — ← Mova's choice · ✓ the right answer · score 12
- 3. Elbows can catch more air and hold the whole sneeze in — no support
- 4. It makes the sneeze quieter — no support
Why: It took the question to ask why something happens (its cause). It chose option 2 with score 12, the only option with support. Its support: lesson 72, line 6: «A sneeze shoots droplets that can travel a few metres, and sneezing into the elbow keeps germs off the hands that touch pencils, door handles and friends.», reached through the same lesson line as the sentence the question matched. What matched: the same action «touch» (+6); the same thing acted on «pencils» (+4); the same doer «hands» (+2). · the question and its options parsed, with trees and pragmatics
Test 6 · right ✓
«my mate says sneezes go 160 km an hour, faster than a car» What did fast-camera tests find?
- 1. It is true, sneezes beat racing cars — no support
- 2. The air is much slower, nearer a fast bicycle, though droplets can float several metres — ← Mova's choice · ✓ the right answer · score 10
- 3. Sneezes go faster than sound — no support
- 4. Sneezes do not move at all — no support
Why: It took the question to ask what it is done to. It chose option 2 with score 10, the only option with support. Its support: lesson 364, line 11: «A sneeze is a reflex that clears the nose, and about 1 person in 4 also sneezes at bright light; fast-camera tests found the air much slower than the 160 kilom…», reached through the same lesson line as the sentence the question matched. What matched: the same action «float» (+5); the same doer «droplets» (+4); it fills the role the question asks for (+1). · the question and its options parsed, with trees and pragmatics
Test 7 · wrong ✗
In a cartoon, Tom gets hiccups and each hic lifts him a metre off the ground until Jerry scares them away. What is a real hiccup?
- 1. A small explosion in the stomach — no support
- 2. A jerk of the diaphragm with the voice box snapping shut, which cannot lift you — ✓ the right answer · no support
- 3. A cough that only cats get — no support
- 4. A jump made by the legs — ← Mova's choice · score -2
Why: It took the question to ask which statement is true. It chose option 4 with score -2, the only option with support. Its support: lesson 101, line 7: «A giraffe must spread its front legs wide to drink, because its neck cannot reach the ground with straight legs, and special valves in its neck stop blood rush…», reached through the option's own match among the sentences about the question's things. What matched: the same circumstance (+3). Against it: a different thing acted on (counts against) (-2); one says «not», the other does not (counts against) (-3). The right option, 2, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics
Test 8 · wrong ✗
«help!! ate beetroot salad and now my wee's pink, am i dying??» What is true?
- 1. Yes, call an ambulance at once — ← Mova's choice · no support
- 2. Beetroot can turn poo and wee pink for a day, and it is harmless — ✓ the right answer · no support
- 3. Beetroot has turned all your blood pink, and it is leaking into your wee — no support
- 4. Only cats have this problem — no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
Test 9 · right ✓
«my hands look clean, why wash after the loo, it's a waste of time» What is right?
- 1. Toilets have no germs — no support
- 2. Water alone always kills every germ — no support
- 3. Germs only ever live on hands that look dirty or smell bad — no support
- 4. Germs are too small to see, so clean-looking hands can carry them — ← Mova's choice · ✓ the right answer · score 10
Why: It took the question to ask why something happens (its cause). It chose option 4 with score 10, the only option with support. Its support: lesson 96, line 4: «The animals look clean and healthy, but their fur and droppings can carry germs that upset people's tummies, so everyone washes with soap at the sinks by the e…», reached through the same lesson line as the sentence the question matched. What matched: the same action «carry» (+6); the same thing acted on «germs» (+4). · the question and its options parsed, with trees and pragmatics
Test 10 · wrong ✗
Why do doctors use a poo chart instead of asking people to describe their poo?
- 1. The chart makes poo healthier, because looking at the right picture helps the gut copy it — score 0
- 2. Pictures let everyone point to the same type without awkward words — ✓ the right answer · no support
- 3. Doctors cannot understand words — ← Mova's choice · score 3
- 4. Poo changes shape when you describe it — no support
Why: It took the question to ask why something happens (its cause). It chose option 3 with score 3, against 0 for the next best. Its support: lesson 322, line 12: «Some cobras can squirt venom from their fangs towards the eyes of an animal that threatens them; venom in the eyes must be washed out with lots of water and a…», reached through the option's own match among the sentences about the question's things. What matched: the same action «see» (+2); one says «not», the other does not (counts against) (+1). The right option, 2, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics
Test 11 · right ✓
Count them: a doctor's poo chart has seven types, and types 3 and 4 are the healthy ones. How many types are not?
- 1. 5 — ← Mova's choice · ✓ the right answer · no support
- 2. 7 — no support
- 3. 2 — no support
- 4. 4 — no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
Test 12 · wrong ✗
Why do so many hiccup cures exist when few are proven?
- 1. Every cure works for everybody — ← Mova's choice · no support
- 2. Hiccups usually stop on their own, so whatever you tried last seems to work — ✓ the right answer · no support
- 3. Doctors invented them all as jokes — no support
- 4. Hiccups are caused by a different germ each time — no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
Exam question 1 · formal language · wrong ✗
Identify the principal origin of the gas expelled from the large intestine.
- 1. The combustion of food within the stomach — ← Mova's choice · no support
- 2. The inhalation of air through the nose — no support
- 3. The release of gas from the lungs — no support
- 4. The fermentation of dietary fibre by bacteria — ✓ the right answer · no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
Exam question 2 · formal language · wrong ✗
Which of the following statements most accurately characterises the green colouration of nasal mucus?
- 1. It invariably indicates a bacterial infection — ← Mova's choice · no support
- 2. It derives from a substance within white blood cells and does not invariably indicate bacteria — ✓ the right answer · no support
- 3. It indicates that the mucus has been retained for one week — no support
- 4. It derives from the consumption of green vegetables — no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
Exam question 3 · formal language · wrong ✗
Select the response consistent with the established facts concerning the composition of human faeces.
- 1. They contain no bacteria whatsoever — ← Mova's choice · no support
- 2. They consist almost wholly of undigested meat — no support
- 3. They consist of dried blood — no support
- 4. They consist of approximately three-quarters water, together with bacteria and fibre — ✓ the right answer · no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
Exam question 4 · formal language · wrong ✗
Ascertain the duration of handwashing with soap recommended for the removal of most germs.
- 1. No duration, water alone being sufficient — ← Mova's choice · no support
- 2. Approximately twenty seconds — ✓ the right answer · no support
- 3. Approximately one hour on each occasion — no support
- 4. Approximately one second only — no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
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