Dinosaurs and life long ago

Tests: 6 of 13 right · Exam: 0 of 4 right · Kind: ★ · Understood: 8 of 17 · Run: 2026-10-18, commit f3c23ea72

Lesson 78 of the world 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 film shows cave people running from a Tyrannosaurus. What is wrong with it?

1. Tyrannosaurus could not run — no support
2. Tyrannosaurus only ate plants — ← Mova's choice · score 6
3. Cave people lived on the Earth long before the dinosaurs — score 5
4. Humans and dinosaurs never lived at the same time — ✓ the right answer · score 3

Why: It took the question to ask which statement is true. It chose option 2 with score 6, against 5 for the next best. Its support: lesson 78, line 15: «Flat, grinding teeth show that an animal ate plants.», reached through what was said in the sentence the question matched. What matched: the same action «eat» (+4); the same thing acted on «plants» (+4). Against it: a different doer (counts against) (-2). The right option, 4, scored 3. · the question and its options parsed, with trees and pragmatics

Test 2 · ★ · right ✓

A fossil skull has wide, flat teeth worn smooth. What did the animal probably eat?

1. Other dinosaurs — score 5
2. Tough plants — ← Mova's choice · ✓ the right answer · score 10
3. Insects caught in flight — no support
4. Small fish — score 5

Why: It took the question to ask what it is done to. It chose option 2 with score 10, against 5 for the next best. Its support: lesson 56, line 2: «Almost all our energy starts in the Sun. Plants catch sunlight to make food; we eat plants, or animals that ate plants, and get energy for our bodies.», reached through the same lesson line as the sentence the question matched. What matched: it fills the role the question asks for (+4); the same action «eat» (+3); the same thing acted on «plants» (+3). · the question and its options parsed, with trees and pragmatics

Test 3 · ★ · right ✓

Why are fossils much more common from animals that lived near lakes and seas?

1. Land animals had no bones — no support
2. They were buried quickly in mud and sand — ← Mova's choice · ✓ the right answer · score 4
3. Fish lived longer than land animals — score 0
4. Water turns bones into stone at once — score 3

Why: It took the question to ask why something happens (its cause). It chose option 2 with score 4, against 3 for the next best. Its support: lesson 78, line 3: «We know about them from fossils: when an animal was buried quickly in mud or sand, its bones were slowly replaced by minerals and turned into stone; footprints…», reached through the option's own match among the sentences about the question's things. What matched: the same action «bury» (+2); the same place «mud» (+1); the same property (+1). · the question and its options parsed, with trees and pragmatics

Test 4 · ★ · wrong ✗

Which is true?

1. Mammoths were a kind of dinosaur — ← Mova's choice · no support
2. A lizard is a baby dinosaur — no support
3. Dinosaurs still live hidden away in deep jungles today — no support
4. A sparrow is a living relative of the dinosaurs — ✓ the right answer · 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

Test 5 · ★ · wrong ✗

Scientists find a trail of big three-toed footprints in rock. What does it show?

1. A dinosaur once walked on soft mud there — ✓ the right answer · no support
2. A dinosaur's bones are buried just below — no support
3. A bird made them last year — ← Mova's choice · score 7
4. The rock was cut by people — no support

Why: It took the question to ask what it is done to. It chose option 3 with score 7, the only option with support. Its support: lesson 78, line 13: «Scientists who study fossils are called palaeontologists.», reached through the same lesson line as the sentence the question matched. What matched: it fills the role the question asks for (+4); the same thing acted on «scientists» (+3). The right option, 1, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 6 · ★ · right ✓

What would a palaeontologist need to find out what a dinosaur ate?

1. Its teeth or fossil droppings — ← Mova's choice · ✓ the right answer · no support
2. The colour and pattern of its skin — no support
3. Its name written in an old book — no support
4. The sound it made when it roared — 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 7 · ★ · wrong ✗

Put these in order from oldest to newest.

1. Dinosaurs, single cells, people, mammoths — ← Mova's choice · no support
2. Single cells, dinosaurs, mammoths, people — ✓ the right answer · no support
3. People, mammoths, dinosaurs, single cells — no support
4. Mammoths, dinosaurs, single cells, people — 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 did the rock from space affect animals all over the world?

1. It hit every country at the same time — ← Mova's choice · no support
2. It was bigger than the whole Earth — no support
3. Dust and smoke blocked the sun and changed the climate — ✓ the right answer · no support
4. It made all the seas boil away — 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

Test 9 · ★ · right ✓

An animal died on dry rocks and was eaten by others. Why is it unlikely to become a fossil?

1. It was not buried quickly — ← Mova's choice · ✓ the right answer · score 3
2. Fossils only form in caves — score 3
3. It was too small to keep — score 2
4. Its bones were already stone — no support

Why: It took the question to ask why something happens (its cause). 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 78, line 3: «We know about them from fossils: when an animal was buried quickly in mud or sand, its bones were slowly replaced by minerals and turned into stone; footprints…», reached through the option's own match among the sentences about the question's things. What matched: the same action «bury» (+2); the same thing acted on «animal» (+2); the same property (+1). Against it: one says «not», the other does not (counts against) (-2). · the question and its options parsed, with trees and pragmatics

Test 10 · ★ · wrong ✗

big curved sharp teeth on this dino, what'd it eat

1. Grass — ← Mova's choice · no support
2. Leaves — no support
3. Meat — ✓ the right answer · no support
4. Fruit — 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 · ★ · wrong ✗

so what wiped out the dinosaurs

1. Woolly mammoths ate all their food — ← Mova's choice · no support
2. The last ice age froze them all — no support
3. Cavemen hunted them all down long ago — no support
4. A huge rock from space hit the Earth about 66 million years ago — ✓ 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 12 · ★ · right ✓

Mia says cavemen used to ride dinosaurs. true?

1. Yes, early people tamed the small dinosaurs — no support
2. No, people never lived at the same time as dinosaurs — ← Mova's choice · ✓ the right answer · score 6
3. No, dinosaurs lived long after the first people — score 1
4. Yes, but only the dinosaurs that ate plants — no support

Why: It took the question to ask which statement is true. It chose option 2 with score 6, against 1 for the next best. Its support: lesson 78, line 8: «People never lived at the same time as dinosaurs.», reached through the option's own match among the sentences about the question's things. What matched: the same action «live» (+3); the same circumstance (+2); the same property (+1). · the question and its options parsed, with trees and pragmatics

Test 13 · ★ · right ✓

a video said woolly mammoths were a kind of dinosaur. right?

1. Yes, mammoths were furry dinosaurs — no support
2. Yes, they lived alongside T. rex — score 6
3. No, mammoths lived before the dinosaurs — score 6
4. No, mammoths lived in the last Ice Age, long after the dinosaurs — ← 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, against 6 for the next best. Its support: lesson 78, line 17: «Woolly mammoths, hairy relatives of elephants, lived during the last Ice Age, long after the dinosaurs.», reached through the remembered sentence the question matched. What matched: the same action «live» (+4); the same property (+2); the same doer «woolly mammoths» (+1). · the question and its options parsed, with trees and pragmatics

Exam question 1 · formal language · wrong ✗

Ascertain the approximate period which has elapsed since the extinction of the dinosaurs.

1. About 66 thousand years — ← Mova's choice · no support
2. About 660 million years — no support
3. About 66 million years — ✓ the right answer · no support
4. About 6 million years — 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 ✗

Select the response that is consistent with the established facts concerning human beings and dinosaurs.

1. Human beings and dinosaurs lived together briefly — ← Mova's choice · no support
2. Human beings hunted dinosaurs for food — no support
3. Human beings never lived at the same time as dinosaurs — ✓ the right answer · no support
4. Human beings tamed certain small dinosaurs — 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 ✗

Identify, from the evidence hereinafter enumerated, that which demonstrates that an animal ate plants.

1. Large, forward-facing eyes — ← Mova's choice · no support
2. Long, hooked claws — no support
3. Flat, grinding teeth — ✓ the right answer · no support
4. Sharp, curved teeth — 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 ✗

Which of the following statements most accurately characterises the period in which woolly mammoths lived?

1. Before the first living things in the sea — no support
2. During the last Ice Age, long after the dinosaurs — ✓ the right answer · no support
3. During the same period as the dinosaurs — no support
4. During the present century in Siberia — ← Mova's choice · score 11

Why: It took the question to ask who or what does it. It chose option 4 with score 11, the only option with support. Its support: lesson 48, line 7: «A century is a period of 100 years.», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «period» (+4); it fills the role the question asks for (+4); the same doer «century» (+3). The right option, 2, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

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