Pools, lakes and ice

Tests: 12 of 19 right · Exam: 3 of 4 right · Kind: ★★ · Understood: 17 of 23 · Run: 2026-10-18, commit f3c23ea72

Lesson 45 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 Minnesota sees older children skating on a lake near where a river flows in. What should she think?

1. The ice must be safe everywhere if they are skating on it — ← Mova's choice · score 4
2. Skating spreads their weight so any ice is safe — no support
3. The ice near the river is likely to be thin and dangerous — ✓ the right answer · no support
4. River water makes ice thicker — no support

Why: It took the question to ask what it is done to. It chose option 1 with score 4, the only option with support. Its support: lesson 45, line 4: «Ice on a pond may look solid but can be thin, especially near streams, bridges and the edges; children go on ice only where an adult has checked it is thick en…», reached through the option's own match among the sentences about the question's things. What matched: the same doer «children» (+2); the same place «ice» (+2). The right option, 3, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 2 · ★★ · right ✓

At a hotel pool in Florida, a boy wants to dive in at the shallow end because it looks deep enough. What is the safe choice?

1. Jump in head first instead of diving, since jumping is always safe in a hotel pool — score 4
2. Go in feet first, and dive only where the water is known to be deep — ← Mova's choice · ✓ the right answer · score 6
3. Dive in with his arms out in front — no support
4. Dive in only if no one is looking — no support

Why: It took the question to ask what it is done to. It chose option 2 with score 6, against 4 for the next best. Its support: lesson 37, line 1: «Money is a way of swapping your work, or a gift, for things you need or want. Because there is only a certain amount of it, every choice to buy one thing means…», reached through the option's own match among the sentences about the question's things. What matched: it fills the role the question asks for (+3); the same doer «choice» (+2); the same thing acted on «one thing» (+2). Against it: a different action (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Test 3 · ★★ · wrong ✗

A dad looks at his phone for a few minutes while his children swim. Why is this risky?

1. Children only get into trouble when he is watching them closely — ← Mova's choice · score 9
2. A child can slip under quietly and he would not notice — ✓ the right answer · no support
3. The phone could fall in the pool — no support
4. His children are sure to splash him — no support

Why: It took the question to ask why something happens (its cause). It chose option 1 with score 9, the only option with support. Its support: lesson 7, line 8: «Children should swim only when an adult is watching them.», reached through the same lesson line as the sentence the question matched. What matched: the same action «watch» (+4); the same thing acted on «children» (+3); a different doer (counts against) (+2). The right option, 2, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 4 · ★★ · right ✓

Which is true about someone who is drowning?

1. They always shout and splash loudly — no support
2. They can always hold on to the side — no support
3. They often cannot shout or wave for help — ← Mova's choice · ✓ the right answer · score 6
4. They float on their back while drowning — no support

Why: It took the question to ask which statement is true. It chose option 3 with score 6, the only option with support. Its support: lesson 45, line 1: «Drowning is usually quick and silent: a child in trouble often cannot shout or wave, so someone must be watching swimmers all the time, even in a small pool.», reached through the same lesson line as the sentence the question matched. What matched: the same action «shout» (+4); the same property (+2). · the question and its options parsed, with trees and pragmatics

Test 5 · ★★ · right ✓

A dog runs onto a frozen pond and falls through. What should its owner's daughter do?

1. Throw herself into the water to help the dog swim back to the bank — no support
2. Stay off the ice, call for help and call to the dog from the bank — ← Mova's choice · ✓ the right answer · score 11
3. Slide out on her tummy to grab its collar — no support
4. Run onto the ice to pull it out — score 8

Why: It took the question to ask what is done. It chose option 2 with score 11, against 8 for the next best. Its support: lesson 22, line 4: «If a strange dog runs at you, do not run or scream: «be a tree» — stand still, fold your arms in close, look down at your feet and stay quiet until it loses in…», reached through the same lesson line as the sentence the question matched. What matched: it fills the role the question asks for (+6); the same action «stay» (+5). · the question and its options parsed, with trees and pragmatics

Test 6 · ★★ · right ✓

A boy in Canada falls through the ice near the bank. How should he get out?

1. Stand up and climb out as fast as he can — no support
2. Swim under the ice towards the middle, where it is thicker and safer to climb out — no support
3. Arms on the ice behind him, kick his legs, slide out and roll away — ← Mova's choice · ✓ the right answer · score 6
4. Stay very still and wait for spring — no support

Why: It took the question to ask what something is like. It chose option 3 with score 6, the only option with support. Its support: lesson 45, line 18: «If you fall through ice, you turn back the way you came, where the ice held you, kick and slide onto the ice on your tummy, then roll away; lying down spreads…», reached through the same lesson line as the sentence the question matched. What matched: the same action «roll away» (+3); it fills the role the question asks for (+3); the same property (+1). Against it: a different doer (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Test 7 · ★★ · right ✓

Three friends go fishing in a small boat on a lake on a calm day. What is the most important rule?

1. All of them wear life jackets the whole time — ← Mova's choice · ✓ the right answer · no support
2. Only the youngest needs a life jacket — no support
3. Life jackets are only for people who cannot swim — no support
4. No life jackets are needed when it is calm — 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 · ★★ · wrong ✗

Why might a boy who swims well in a warm pool get into trouble in a cold mountain lake?

1. He cannot see under the water — ← Mova's choice · score 3
2. Lake water does not hold up swimmers the way pool water does — no support
3. Mountain lakes have no bottom — no support
4. The cold water can shock him and tire him quickly — ✓ the right answer · score 2

Why: It took the question to ask why something happens (its cause). It chose option 1 with score 3, against 2 for the next best. Its support: lesson 1, line 5: «For example, a boy in Denver carrying a tall laundry basket downstairs cannot see the steps, so he takes half the clothes first and holds the rail with his fre…», reached through the option's own match among the sentences about the question's things. What matched: the same action «see» (+2); the same doer «boy» (+1). The right option, 4, scored 2. · the question and its options parsed, with trees and pragmatics

Test 9 · ★★ · right ✓

A girl wants to rescue a friend in water. Which is the safest order?

1. Call for help, reach or throw something, go in only if trained — ← Mova's choice · ✓ the right answer · no support
2. Go in, then reach, then throw — no support
3. Throw herself in to hold her friend up until somebody else comes along to help — no support
4. Jump in first, then call for help — 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 10 · ★★ · wrong ✗

pond's frozen, can we go on it

1. Yes, near the stream is best — ← Mova's choice · no support
2. Yes, ice is always thick — no support
3. Not unless an adult has checked it — ✓ the right answer · no support
4. Yes, if it looks white — 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 11 · ★★ · right ✓

friend fell through the ice!

1. Run out across the ice and grab him fast — score 5
2. Jump in too — no support
3. Walk out slowly to him — no support
4. Call for help and throw something, stay off — ← Mova's choice · ✓ the right answer · score 8

Why: It took the question to ask which statement is true. It chose option 4 with score 8, against 5 for the next best. Its support: lesson 45, line 5: «If a friend falls through the ice, you do not go out to him: you call for help, then reach with a long branch or throw something that floats, while you stay on…», reached through the same lesson line as the sentence the question matched. What matched: the same action «throw» (+4); the same thing acted on «something» (+4). · the question and its options parsed, with trees and pragmatics

Test 12 · ★★ · right ✓

i fell through the ice, how do i get out

1. Swim to the middle — no support
2. Wait without moving, someone will come and get you out — no support
3. Go back the way you came, kick and slide on your tummy — ← Mova's choice · ✓ the right answer · score 8
4. Stand up and climb — no support

Why: It took the question to ask which statement is true. It chose option 3 with score 8, the only option with support. Its support: lesson 45, line 18: «If you fall through ice, you turn back the way you came, where the ice held you, kick and slide onto the ice on your tummy, then roll away; lying down spreads…», reached through the same lesson line as the sentence the question matched. What matched: the same action «come» (+4); the same thing acted on «way» (+4). · the question and its options parsed, with trees and pragmatics

Test 13 · ★★ · right ✓

shallow end, can i dive

1. Yes, if your eyes are open and you dive really flat — no support
2. Yes, head first is safest — no support
3. Yes, if you go fast — no support
4. No, diving into shallow water can hurt your neck — ← 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, the only option with support. Its support: lesson 45, line 11: «Diving into shallow water can cause serious head and neck injuries.», reached through the remembered sentence the question matched. What matched: the same place «shallow water» (+3); the same action «dive» (+1). · the question and its options parsed, with trees and pragmatics

Test 14 · ★★ · wrong ✗

lake's frozen, looks solid, can we slide on it

1. Yes, if it looks white — ← Mova's choice · score 4
2. Yes, if you go one at a time — no support
3. Yes, if you stay near the edge — no support
4. No, stay off, ice can crack and you fall through — ✓ the right answer · no support

Why: It took the question to ask which statement is true. It chose option 1 with score 4, the only option with support. Its support: lesson 45, line 13: «Lakes and rivers can be much colder and deeper than they look.», reached through the option's own match among the sentences about the question's things. What matched: the same action «look» (+2); the same doer «lakes» (+2). The right option, 4, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 15 · ★★ · right ✓

mate fell through the ice!!

1. Jump in after him — no support
2. Stamp on the ice to break a path — no support
3. Shout for help and reach a stick from the bank — ← Mova's choice · ✓ the right answer · score 6
4. Run onto the ice to grab him, fast as you can — no support

Why: It took the question to ask which statement is true. It chose option 3 with score 6, the only option with support. Its support: lesson 45, line 5: «If a friend falls through the ice, you do not go out to him: you call for help, then reach with a long branch or throw something that floats, while you stay on…», reached through the same lesson line as the sentence the question matched. What matched: the same action «call» (+4); the same circumstance (+2). · the question and its options parsed, with trees and pragmatics

Test 16 · ★★ · wrong ✗

Jack says pond ice is always thickest at the edges. true?

1. Yes, the middle always melts — ← Mova's choice · no support
2. No, edges are often thin and weak — ✓ the right answer · no support
3. Yes, edges freeze first — no support
4. Yes, unless it is snowing — 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 17 · ★★ · right ✓

did u hear a lad went through the ice on the pond near the bridge, his mates had to pull him out with a branch

1. It proves only ponds freeze thinly — no support
2. It is gossip, so ice is always safe in winter as long as it is really cold out — score 3
3. Real lesson: ice is thinner near moving water, so never go on ice an adult has not checked — ← Mova's choice · ✓ the right answer · score 6
4. Real lesson: branches are the best way onto ice — no support

Why: It took the question to ask which statement is true. It chose option 3 with score 6, against 3 for the next best. Its support: lesson 45, line 20: «Ice that looks solid can be thin, especially near the edges, over moving water and in spring.», reached through the option's own match among the sentences about the question's things. What matched: the same action «move» (+2); the same doer «ice» (+2); the same thing acted on «water» (+2). · the question and its options parsed, with trees and pragmatics

Test 18 · ★★ · right ✓

my cousin reckons it's fine to dive in the shallow end if u dive flat, he does it all the time

1. Not safe; diving into shallow water can hurt your head and neck badly — ← Mova's choice · ✓ the right answer · score 9
2. He is right, a flat dive is always safe — no support
3. He is right, if the water is warm — no support
4. He is right, as long as a friend watches from the side to check the water is deep enough — no support

Why: It took the question to ask which statement is true. It chose option 1 with score 9, the only option with support. Its support: lesson 45, line 11: «Diving into shallow water can cause serious head and neck injuries.», reached through the same lesson line as the sentence the question matched. What matched: the same doer «diving» (+4); the same thing acted on «serious head» (+4); a different action (counts against) (+1). · the question and its options parsed, with trees and pragmatics

Test 19 · ★★ · wrong ✗

Hugo slipped running round the pool and cut his chin, people say he's a show-off, pass it on

1. Do not pass it on; he got hurt, and the lesson is to walk on wet pool sides — ✓ the right answer · no support
2. Pass it on, and say he needed ten stitches and cried in front of the lifeguards — ← Mova's choice · score 4
3. Pass it on, because show-offs deserve it — no support
4. Pass it on, so he stops coming to the pool — no support

Why: It took the question to ask which statement is true. It chose option 2 with score 4, the only option with support. Its support: lesson 2, line 7: «A boy in Texas stood on a wobbly chair on top of a table to reach a shelf; the chair tipped, he fell onto the hard floor and needed stitches in his chin.», reached through the option's own match among the sentences about the question's things. What matched: the same action «need» (+2); the same thing acted on «stitches» (+2). The right option, 1, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Exam question 1 · formal language · right ✓

Which of the following statements most accurately characterises the thickness of ice near streams, inlets and bridges?

1. The ice is thinner where water moves beneath it — ← Mova's choice · ✓ the right answer · no support
2. The ice is thickest beneath bridges because of shade — no support
3. The ice is of uniform thickness everywhere — no support
4. The ice is thicker where water moves beneath it — 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 · right ✓

Identify the principal hazard of diving into shallow water.

1. A mild chill of the skin — no support
2. The loss of a swimming cap — no support
3. Water entering the ears and causing pain — score 5
4. Serious injury to the head and neck — ← Mova's choice · ✓ the right answer · score 6

Why: It took the question to ask which statement is true. It chose option 4 with score 6, against 5 for the next best. Its support: lesson 45, line 11: «Diving into shallow water can cause serious head and neck injuries.», reached through the same lesson line as the sentence the question matched. What matched: the same thing acted on «serious head» (+4); the same property (+2). · the question and its options parsed, with trees and pragmatics

Exam question 3 · formal language · right ✓

It being given that children are in or near water, select the arrangement consistent with established guidance.

1. A grown-up must watch them at all times — ← Mova's choice · ✓ the right answer · score 7
2. No supervision is required in a shallow pool — no support
3. A grown-up need watch only when they are in deep water — score 4
4. Older children may supervise younger ones alone — score 2

Why: It took the question to ask which statement is true. It chose option 1 with score 7, against 4 for the next best. Its support: lesson 45, line 9: «A grown-up should watch children in and near water all the time.», reached through the option's own match among the sentences about the question's things. What matched: the same action «watch» (+2); the same doer «grown up» (+2); the same thing acted on «children» (+2); the same property (+1). · the question and its options parsed, with trees and pragmatics

Exam question 4 · formal language · wrong ✗

Select the response that is consistent with the established facts concerning lakes and rivers.

1. They are always warmer than the sea — ← Mova's choice · no support
2. They may be much colder and deeper than they appear — ✓ the right answer · no support
3. They contain no currents of any kind — no support
4. Their depth may be judged reliably by eye — no support

Why: Nothing it remembers matched the question, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

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