Тест на тему органоиды клетки

Ниже готовый тест по геометрии для 8 класса. Тип вопросов: открытые. 15 вопросов. В конце каждого вопроса — ответ и краткое решение.

1. Треугольник. Основа b = 7 см, высота h = 4 см. Найдите площадь треугольника. Ответ: S = (b·h)/2 = (7·4)/2 = 14 см².

2. Треугольник. Основа 12 см, высота 10 см. Найдите площадь. Ответ: S = (12·10)/2 = 60 см².

3. Треугольник. Основа 5 см, площадь равна 20 см². Найдите высоту. Ответ: h = (2A)/b = (2·20)/5 = 8 см.

4. Параллелограмм. Основа 8 см, высота 5 см. Найдите площадь. Ответ: S = b·h = 8·5 = 40 см².

5. Параллелограмм. Площадь 60 см², высота 6 см. Найдите основание. Ответ: b = S/h = 60/6 = 10 см.

6. Трапеция. Основания 7 см и 5 см, высота 4 см. Найдите площадь. Ответ: S = ((7+5)/2)·4 = 6·4 = 24 см².

7. Трапеция. Основания 9 см и 3 см, высота 6 см. Найдите площадь. Ответ: S = ((9+3)/2)·6 = 6·6 = 36 см².

8. Ромб. Диагонали 6 см и 8 см. Найдите площадь. Ответ: S = (d1·d2)/2 = (6·8)/2 = 24 см².

9. Ромб. Основа ромба 5 см, высота к этой стороне 4 см. Найдите площадь. Ответ: S = base·height = 5·4 = 20 см².

10. Треугольник. Координаты вершин A(0,0), B(6,0), C(0,4). Найдите площадь. Ответ: S = |x1(y2−y3) + x2(y3−y1) + x3(y1−y2)|/2 = |0(0−4) + 6(4−0) + 0(0−0)|/2 = (24)/2 = 12 см².

11. Трапеция. Основания 8 см и 5 см, высота 3 см. Найдите площадь. Ответ: S = ((8+5)/2)·3 = 6.5·3 = 19.5 см².

12. Треугольник. Основа 9 см, высота 6 см. Найдите площадь. Ответ: S = (9·6)/2 = 27 см².

13. Параллелограмм. Основа 15 см, площадь 90 см². Найдите высоту. Ответ: h = S/b = 90/15 = 6 см.

14. Ромб. Диагонали 10 см и 4 см. Найдите площадь. Ответ: S = (d1·d2)/2 = (10·4)/2 = 20 см².

15. Ромб. Диагонали 12 см и 5 см. Найдите площадь. Ответ: S = (d1·d2)/2 = (12·5)/2 = 30 см².

Ниже тест на тему Present Continuous Passive для 10 класса. Тип вопросов: единственный выбор. В конце — ключ с правильными ответами.

Инструкция: выберите один правильный вариант (A, B, C или D) для каждого вопроса.

1. The house ______ by workers right now. A) is cleaned by workers right now. B) is being cleaned by workers right now. C) are cleaned by workers right now. D) has been cleaned by workers right now.

2. The dishes ______ by the maid at the moment. A) are washed by the maid at the moment. B) are being washed by the maid at the moment. C) were washed by the maid at the moment. D) were being washed by the maid at the moment.

3. Choose the sentence in Present Continuous Passive. A) A new phone is developed by the company. B) A new phone is being developed by the company. C) A new phone will be developed by the company. D) A new phone has been developed by the company.

4. The project ______ by the team at the moment. A) is completed by the team at the moment. B) is being completed by the team at the moment. C) are being completed by the team at the moment. D) was being completed by the team at the moment.

5. The letters ______ by the postman. A) are delivered by the postman. B) are being delivered by the postman. C) were being delivered by the postman. D) will be delivered by the postman.

6. The book ____ by the editor. A) is editing by the editor. B) is being edited by the editor. C) are being edited by the editor. D) has been edited by the editor.

7. The questions are being answered by the students right now. A) The questions are answered by the students right now. B) The questions are being answered by the students right now. C) The questions will be answered by the students right now. D) The questions were being answered by the students right now.

8. The garden is being watered by the volunteers. A) The garden is watered by the volunteers. B) The garden is being watered by the volunteers. C) The garden has been watered by the volunteers. D) The garden was being watered by the volunteers.

9. The room is being cleaned by the janitor. A) The room is cleaned by the janitor. B) The room is being cleaned by the janitor. C) The room has been cleaned by the janitor. D) The room was being cleaned by the janitor.

10. The cars are being inspected by inspectors at the moment. A) The cars are inspected by inspectors at the moment. B) The cars are being inspected by inspectors at the moment. C) The cars were being inspected by inspectors at the moment. D) The cars will be inspected by inspectors at the moment.

Ответы: 1-B, 2-B, 3-B, 4-B, 5-B, 6-B, 7-B, 8-B, 9-B, 10-B

Вот тест по математике для 8 класса на тему "Неполные квадратные уравнения".

Тест по теме: Неполные квадратные уравнения

Вопрос 1: Какой из следующих примеров является неполным квадратным уравнением?

• A) (x^2 + 5x + 6 = 0)
• B) (x^2 - 4 = 0)
• C) (2x^2 + 3 = 0)
• D) (x^2 + 3x + 2 = 0)

Вопрос 2: Какое из уравнений имеет вид (ax^2 + c = 0)?

• A) (3x^2 + 2 = 0)
• B) (x^2 - 6x = 0)
• C) (x^2 + 5x + 4 = 0)
• D) (x^2 + 2x - 8 = 0)

Вопрос 3: Найдите корень уравнения (x^2 - 9 = 0).

• A) 3
• B) -3
• C) 3 и -3
• D) 0

Вопрос 4: Решите уравнение (x^2 + 16 = 0). Каковы его корни?

• A) (4)
• B) (-4)
• C) Корней нет
• D) (4i) и (-4i)

Вопрос 5: Какое число является корнем уравнения (x^2 - 36 = 0)?

• A) 6
• B) -6
• C) 6 и -6
• D) Нет корней

Вопрос 6: Решите уравнение (x^2 = 25).

• A) 5
• B) -5
• C) 5 и -5
• D) 0

Вопрос 7: Какой метод можно использовать для решения уравнения вида (x^2 + c = 0)?

• A) Подбор
• B) Метод скидки
• C) Извлечение квадратного корня
• D) Система уравнений

Вопрос 8: Уравнение (x^2 - 49 = 0) можно решить путем:

• A) Факторизации
• B) Графического метода
• C) Подбора
• D) Извлечения корня

Вопрос 9: В каком уравнении выражение (c) является положительным?

• A) (x^2 + 8 = 0)
• B) (x^2 - 4 = 0)
• C) (x^2 - 9 = 0)
• D) (x^2 + 1 = 0)

Вопрос 10: Каков вид графика уравнения (x^2 + 1 = 0)?

• A) Прямая
• B) Парабола
• C) Круг
• D) Нет графика

Пожалуйста, используйте этот тест для оценки знаний учеников!

Тест по предлогам пространства в английском языке для 6 класса

1. Choose the correct preposition: My cat is ______ the table. a) on b) in c) at d) between

2. Choose the correct preposition: The book is ______ the shelf. a) under b) in c) between d) on

3. Choose the correct preposition: The ball is ______ the box. a) on b) between c) over d) in

4. Choose the correct preposition: The dog is ______ the couch. a) at b) on c) between d) near

5. Choose the correct preposition: The pencil is ______ the desk. a) at b) in c) between d) under

6. Choose the correct preposition: The bird is ______ the tree. a) over b) under c) in d) between

7. Choose the correct preposition: The keys are ______ the bag. a) on b) in c) under d) near

8. Choose the correct preposition: The ball is ______ the box. a) at b) between c) near d) under

9. Choose the correct preposition: The picture is ______ the wall. a) on b) in c) at d) between

10. Choose the correct preposition: The cat is ______ the bed. a) on b) near c) in d) under

Please note: Answers are not provided.