Flossing and caring for your teeth

Tests: 11 of 19 right · Exam: 3 of 4 right · Kind: ★ · Understood: 20 of 23 · Run: 2026-10-18, commit f3c23ea72

Lesson 74 of the everyday 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 ✗

A girl in Phoenix brushes well twice a day but never cleans between her teeth. What could happen?

1. Her teeth would grow crooked — ← Mova's choice · score 4
2. Plaque between the teeth could cause decay there — ✓ the right answer · no support
3. Her teeth would get too clean — score 4
4. Nothing, because brushing well reaches everywhere in the mouth — no support

Why: It took the question to ask what happens next. It chose option 1 with score 4, tied with another option at 4 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 73, line 21: «Baby teeth can get holes too; a rotten baby tooth hurts, can get infected and can harm the grown-up tooth growing under it.», reached through the option's own match among the sentences about the question's things. What matched: the same action «grow» (+2); the same doer «grown tooth» (+2). The right option, 2, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 2 · ★ · right ✓

Which is true about chewing gum?

1. Gum is healthy to swallow every day — no support
2. Gum is digested like bread — score -1
3. Swallowed gum passes through, though it is not digested — ← Mova's choice · ✓ the right answer · score 4
4. Swallowed gum stays inside the stomach for seven whole years — score 1

Why: It took the question to ask which statement is true. It chose option 3 with score 4, against 1 for the next best. Its support: lesson 74, line 16: «Swallowed chewing gum is not digested, but it passes through the body in a few days; it does not stay for seven years.», reached through the remembered sentence the question matched. What matched: the same thing acted on «swallowed chewing gum» (+3); the same action «digest» (+1). · the question and its options parsed, with trees and pragmatics

Test 3 · ★ · right ✓

A boy in Cork knocks out a front grown-up tooth on the trampoline. What should the adult do?

1. Scrub the root clean with a toothbrush and soap, then let it dry in the air — no support
2. Wait a week to see if the gap heals — score 8
3. Hold it by the top, put it in milk and go to a dentist at once — ← Mova's choice · ✓ the right answer · score 9
4. Throw it away, a new one will grow — no support

Why: It took the question to ask what is done. It chose option 3 with score 9, against 8 for the next best. Its support: lesson 74, line 4: «A boy in Adelaide gets a front tooth knocked out at football; his coach picks it up by the white top, puts it in a cup of milk and drives him straight to the d…», reached through the same lesson line as the sentence the question matched. What matched: it fills the role the question asks for (+5); the same action «put» (+4); a different thing acted on (counts against) (+1). Against it: a different doer (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Test 4 · ★ · wrong ✗

A boy uses a sharp pin to get popcorn out of his teeth. What is the danger?

1. Nothing, a pin is the best tool — no support
2. The pin would make his teeth loose for ever — ← Mova's choice · score 8
3. He could cut his gums or chip a tooth — ✓ the right answer · score 8
4. The pin could make the popcorn stick harder — no support

Why: It took the question to ask what it is done to. It chose option 2 with score 8, tied with another option at 8 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 73, line 3: «Toothpaste has fluoride, which makes teeth stronger: spit the toothpaste out, but do not rinse with lots of water, so a little fluoride stays on the teeth.», reached through the option's own match among the sentences about the question's things. What matched: the same action «make» (+5); it fills the role the question asks for (+2); the same thing acted on «teeth» (+1). The right option, 3, scored 8. · the question and its options parsed, with trees and pragmatics

Test 5 · ★ · wrong ✗

A family drinks cola with every meal. What would a dentist probably say?

1. Cola is fine if you drink it with a straw — no support
2. Drink juice instead, it has no sugar — no support
3. Choose water or milk most of the time — ✓ the right answer · no support
4. Cola makes teeth stronger — ← Mova's choice · score 5

Why: It took the question to ask what it is done to. It chose option 4 with score 5, the only option with support. Its support: lesson 73, line 6: «A boy in Texas hardly brushed for a year; a hole grew in a back tooth, it began to throb at night, and the dentist had to take the tooth out.», reached through the remembered sentence the question matched. What matched: it fills the role the question asks for (+4); the same thing acted on «tooth» (+2). Against it: a different action (counts against) (-1). The right option, 3, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 6 · ★ · right ✓

Why would a dentist tell you not to snap floss down hard?

1. It makes the teeth loose — score -3
2. It hurts and can damage the gums — ← Mova's choice · ✓ the right answer · score 3
3. It breaks the floss much too quickly — no support
4. It puts germs on the floss — no support

Why: It took the question to ask why something happens (its cause). It chose option 2 with score 3, against -3 for the next best. Its support: lesson 74, line 8: «Floss is slid gently between the teeth and curved around each tooth, because snapping it down hurts the gums.», reached through the cause of the sentence the question matched. What matched: the same thing acted on «gums» (+6). Against it: a different action (counts against) (-1); a different doer (counts against) (-2). · the question and its options parsed, with trees and pragmatics

Test 7 · ★ · wrong ✗

What would happen if you pressed a clean tissue on a bleeding baby tooth gap for a few minutes?

1. A new tooth would grow at once — ← Mova's choice · no support
2. The small bleeding would usually stop — ✓ the right answer · no support
3. The gap would become infected from the tissue — no support
4. The bleeding would get worse and worse — 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 8 · ★ · right ✓

A girl uses her teeth as scissors to open everything. What is the risk?

1. Her teeth could chip or crack — ← Mova's choice · ✓ the right answer · score 7
2. Her jaw would grow much too big — no support
3. Her teeth would become sharper — no support
4. Her teeth would get much cleaner — no support

Why: It took the question to ask what it is done to. It chose option 1 with score 7, the only option with support. Its support: lesson 74, line 6: «A girl in Wales chewed ice and opened bottles with her teeth; one day a front tooth cracked, and she needed several visits to fix it.», reached through the option's own match among the sentences about the question's things. What matched: the same action «crack» (+5); the same doer «front tooth» (+2). · the question and its options parsed, with trees and pragmatics

Test 9 · ★ · wrong ✗

What does it mean if a tooth hurts with sweet foods?

1. Sweet foods always hurt teeth — ← Mova's choice · score 8
2. The tooth is just very healthy — no support
3. It may have a hole that needs a dentist — ✓ the right answer · score 8
4. It is growing a brand new root underneath — score 7

Why: It took the question to ask what it is done to. It chose option 1 with score 8, tied with another option at 8 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 74, line 14: «A tooth that hurts with cold or sweet things may have a hole that a dentist needs to fix.», reached through the remembered sentence the question matched. What matched: it fills the role the question asks for (+4); the same action «hurt» (+2); the same thing acted on «tooth» (+2). The right option, 3, scored 8. · the question and its options parsed, with trees and pragmatics

Test 10 · ★ · right ✓

bit of chicken stuck tween my teeth, gonna use a fork

1. Yes, a fork is the quickest way — no support
2. Yes, just be quick about it — no support
3. Yes, use a pin if the fork is too big — no support
4. No, use floss, sharp things cut gums and chip teeth — ← Mova's choice · ✓ the right answer · score 11

Why: It took the question to ask which statement is true. It chose option 4 with score 11, the only option with support. Its support: lesson 74, line 9: «Sharp things like forks and pins cut the gums and can chip teeth, so they are never used to pick the teeth.», reached through the same lesson line as the sentence the question matched. What matched: the same doer «sharp things» (+5); the same action «cut» (+3); the same thing acted on «gums» (+3). · the question and its options parsed, with trees and pragmatics

Test 11 · ★ · right ✓

my mate swallowed his gum, he says itll stay in him 7 yrs

1. Yes, it sticks to the stomach forever — no support
2. Yes, gum stays inside for seven years, everyone knows — score -6
3. No, it stays for about one year — score -6
4. No, it passes through the body in a few days — ← Mova's choice · ✓ the right answer · score 9

Why: It took the question to ask which statement is true. It chose option 4 with score 9, against -6 for the next best. Its support: lesson 74, line 16: «Swallowed chewing gum is not digested, but it passes through the body in a few days; it does not stay for seven years.», reached through a sentence linked to the one the question matched. What matched: the same place «body» (+3); the same property (+3); the same action «pass» (+2); a different doer (counts against) (+1). · the question and its options parsed, with trees and pragmatics

Test 12 · ★ · right ✓

knocked his big tooth out at footy!! where do i hold it

1. Wrap it in tissue, see a dentist next week — no support
2. By the root, wash it with soap — no support
3. Throw it away, a new one grows — no support
4. By the white top, keep it in milk and see a dentist now — ← Mova's choice · ✓ the right answer · score 5

Why: It took the question to ask which statement is true. It chose option 4 with score 5, the only option with support. Its support: lesson 74, line 12: «A knocked-out grown-up tooth is held by the white top (the crown), not the root, kept in milk and taken to a dentist at once.», reached through the same lesson line as the sentence the question matched. What matched: the same action «keep» (+3); the same place «milk» (+2); the same circumstance (+2). Against it: a different doer (counts against) (-2). · the question and its options parsed, with trees and pragmatics

Test 13 · ★ · right ✓

can i have a fizzy drink every day with lunch

1. Water or milk is better, fizzy drinks cause decay — ← Mova's choice · ✓ the right answer · score 6
2. Yes, if you drink it through a straw — no support
3. Yes, fizzy drinks clean your teeth with all the bubbles — no support
4. Yes, if it is a small can — score 2

Why: It took the question to ask which statement is true. It chose option 1 with score 6, against 2 for the next best. Its support: lesson 74, line 10: «Sugary and fizzy drinks cause tooth decay, so water and milk are the best everyday drinks.», reached through a sentence linked to the one the question matched. What matched: the same action «cause» (+2); the same doer «sugary drinks» (+2); the same thing acted on «tooth decay» (+2). · the question and its options parsed, with trees and pragmatics

Test 14 · ★ · wrong ✗

gums bleed a bit when i brush, should i stop brushing there

1. Only brush there on Sundays — ← Mova's choice · no support
2. Yes, stop brushing there for good — no support
3. Yes, rub salt hard on them — no support
4. No, keep brushing gently and floss, bleeding gums need cleaning — ✓ 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

Test 15 · ★ · right ✓

bro opens bottles with his teeth like a legend lol

1. It makes your teeth stronger over time — score 3
2. It is fine if the cap is already loose — no support
3. It only ever hurts the plastic bottles — no support
4. It can crack a tooth, use an opener — ← Mova's choice · ✓ the right answer · score 4

Why: It took the question to ask which statement is true. It chose option 4 with score 4, against 3 for the next best. Its support: lesson 74, line 15: «Opening packets with your teeth and chewing pencils or ice can crack teeth.», reached through the same lesson line as the sentence the question matched. What matched: the same action «crack» (+3); the same thing acted on «teeth» (+3). Against it: a different doer (counts against) (-2). · the question and its options parsed, with trees and pragmatics

Test 16 · ★ · right ✓

whats the point of floss, i brush twice a day

1. It makes your teeth whiter only — no support
2. It stops your teeth from growing — no support
3. It cleans between the teeth where holes start and a brush cannot reach — ← Mova's choice · ✓ the right answer · score 2
4. It is just for people with braces — no support

Why: It took the question to ask which statement is true. It chose option 3 with score 2, the only option with support. Its support: lesson 74, line 18: «About a third of each tooth's surface is between the teeth, where a brush cannot reach without floss.», reached through the option's own match among the sentences about the question's things. What matched: the same action «reach» (+2). · the question and its options parsed, with trees and pragmatics

Test 17 · ★ · wrong ✗

heard a boy at footy got his tooth knocked out and the dentist just glued it back in like nothing, what's the real lesson

1. Wait a week, then take it to the dentist — ← Mova's choice · score 3
2. Throw the tooth away, it can never be saved — score -1
3. Hold the tooth by the top, keep it in milk, get to a dentist fast — ✓ the right answer · score 1
4. Wash the root with soap and dry it well — no support

Why: It took the question to ask which statement is true. It chose option 1 with score 3, against 1 for the next best. Its support: lesson 66, line 7: «A boy in Dublin was told his cat had just gone away when it died; he waited at the window for weeks, and he felt worse when he learnt the truth later.», reached through the option's own match among the sentences about the question's things. What matched: the same action «wait» (+2); the same property (+2). Against it: a different doer (counts against) (-1). The right option, 3, scored 1. · the question and its options parsed, with trees and pragmatics

Test 18 · ★ · wrong ✗

my brother swears gum u swallow stays in ur belly 7 years, true?

1. True, but only the minty kind of gum — no support
2. True, it sticks there for exactly seven years — ← Mova's choice · score -6
3. False, it melts in your mouth at once — no support
4. Just a myth; swallowed gum passes through in a few days — ✓ the right answer · no support

Why: It took the question to ask which statement is true. It chose option 2 with score -6, the only option with support. Its support: lesson 74, line 16: «Swallowed chewing gum is not digested, but it passes through the body in a few days; it does not stay for seven years.», reached through the remembered sentence the question matched. What matched: the same action «stay» (+1); the same property (+1). Against it: a different doer (counts against) (-2); one says «not», the other does not (counts against) (-6). The right option, 4, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 19 · ★ · right ✓

kids say Ruby cracked her tooth cos she's a weirdo who eats ice, should i pass it on

1. Yes, and make fun of her new tooth too when she gets it fixed — score 2
2. Yes, everyone should know she is weird — no support
3. No, it's unkind; just learn that crunching ice can crack teeth — ← Mova's choice · ✓ the right answer · score 5
4. Yes, but whisper it so she cannot hear — no support

Why: It took the question to ask which statement is true. It chose option 3 with score 5, against 2 for the next best. Its support: lesson 74, line 2: «Teeth are strong but not made for everything: opening packets, chewing pencils or crunching ice can chip or crack them, and fizzy or sugary drinks every day ca…», reached through the remembered sentence the question matched. What matched: the same thing acted on «teeth» (+3); the same action «crack» (+1); the same doer «ice» (+1). · the question and its options parsed, with trees and pragmatics

Exam question 1 · formal language · right ✓

Identify the principal reason for which dental floss or an interdental brush is employed daily.

1. Floss strengthens the roots of the teeth — no support
2. Floss whitens the teeth more effectively than brushing — no support
3. Floss replaces the need to brush altogether — no support
4. A toothbrush cannot reach the gaps between the teeth — ← Mova's choice · ✓ the right answer · score 7

Why: It took the question to ask which statement is true. It chose option 4 with score 7, the only option with support. Its support: lesson 74, line 7: «A toothbrush cannot reach between the teeth, so floss or an interdental brush is used once a day.», reached through a sentence linked to the one the question matched. What matched: the same circumstance (+3); the same action «reach» (+2); the same doer «toothbrush» (+2). · the question and its options parsed, with trees and pragmatics

Exam question 2 · formal language · right ✓

Whereas a permanent tooth has been dislodged by a blow, determine the procedure most consistent with the established facts.

1. Hold it by the white crown, keep it in milk and attend a dentist at once — ← Mova's choice · ✓ the right answer · score 3
2. Place it in the freezer and visit a dentist next week — no support
3. Hold it by the root, scrub it clean and keep it dry — score 3
4. Discard it, as permanent teeth cannot be restored — no support

Why: It took the question to ask which statement is true. It chose option 1 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 74, line 12: «A knocked-out grown-up tooth is held by the white top (the crown), not the root, kept in milk and taken to a dentist at once.», reached through the same lesson line as the sentence the question matched. What matched: the same action «keep» (+3); the same circumstance (+2). Against it: a different doer (counts against) (-2). · the question and its options parsed, with trees and pragmatics

Exam question 3 · formal language · right ✓

Which of the following most accurately characterises the appropriate everyday beverages for the protection of the teeth?

1. Water and milk — ← Mova's choice · ✓ the right answer · no support
2. Sweetened tea and cola — no support
3. Sports drinks and squash — no support
4. Fizzy drinks and fruit juice — 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 ✗

Select the response consistent with the established facts concerning a tooth that is painful upon contact with cold or sweet substances.

1. It is merely growing and requires no attention whatsoever from anyone — ← Mova's choice · score 8
2. It is a sign that brushing must cease — no support
3. It may contain a cavity requiring treatment by a dentist — ✓ the right answer · score 8
4. It will be cured by eating more sugar — no support

Why: It took the question to ask which statement is true. It chose option 1 with score 8, tied with another option at 8 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 73, line 21: «Baby teeth can get holes too; a rotten baby tooth hurts, can get infected and can harm the grown-up tooth growing under it.», reached through the same lesson line as the sentence the question matched. What matched: the same doer «grown tooth» (+5); the same action «grow» (+3). The right option, 3, scored 8. · the question and its options parsed, with trees and pragmatics

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