Тест на тему Энергетический и пластический обмен

Тест по алгебре (8 класс) Тема: Рациональные дроби и их свойства Тип вопросов: Единственный выбор Количество вопросов: 7 Инструкция: выберите одну правильную альтернативу для каждого вопроса.

1. Упростите дробь 18/24.

• a) 1/2
• b) 3/4
• c) 2/3
• d) 4/5

2. Сложение дробей с одинаковыми знаменателями: 3/8 + 1/8 = ?

• a) 1/2
• b) 1/4
• c) 3/8
• d) 2/5

3. Разность дробей: 7/9 - 2/3 =

• a) 1/9
• b) 5/9
• c) 7/12
• d) 1/3

4. Умножение дробей: (3/4) × (2/5) =

• a) 3/10
• b) 9/20
• c) 1/2
• d) 3/5

5. Деление дробей: (5/6) ÷ (1/3) =

• a) 5/2
• b) 3/2
• c) 5/3
• d) 2

6. Верно ли следующее утверждение: при любом не нулевом числе k дробь a/b равна (a·k)/(b·k)?

• a) Да
• b) Нет
• c) Только если k = 1
• d) Зависит от a и b

7. Какая дробь несократимая?

• a) 6/35
• b) 8/18
• c) 9/12
• d) 15/25

Ответы:

1. b
2. a
3. a
4. a
5. a
6. a
7. a

Тест по Passive voice в английском языке для 8 класса

1. Change the following sentence from active voice to passive voice: "They built a new house last year."

2. Rewrite the sentence in passive voice: "The teacher gave us a homework assignment."

3. Transform the sentence into passive voice: "She will clean the room tomorrow."

4. Convert the sentence into passive voice: "The cat chased the mouse up the tree."

5. Change the following sentence from active to passive voice: "People speak Spanish in many countries."

6. Rewrite the sentence in passive form: "My parents bought me a new bike."

7. Convert the sentence to passive voice: "The chef is preparing a delicious meal in the kitchen."

8. Transform the sentence to passive voice: "The storm damaged the house."

9. Change the sentence into passive voice: "She is writing a novel."

10. Rewrite the sentence in passive voice: "The company will launch a new product next month."

11. Convert the sentence into passive voice: "They have painted the fence white."

12. Change the following sentence from active to passive voice: "The students are studying for the exam."

13. Rewrite the sentence in passive form: "The gardener is planting new flowers in the garden."

14. Transform the sentence into passive voice: "They have chosen a new team captain."

15. Convert the sentence to passive voice: "The mechanic fixed my car yesterday."

Ответы:

1. A new house was built by them last year.
2. We were given a homework assignment by the teacher.
3. The room will be cleaned by her tomorrow.
4. The mouse was chased up the tree by the cat.
5. Spanish is spoken in many countries by people.
6. I was bought a new bike by my parents.
7. A delicious meal is being prepared in the kitchen by the chef.
8. The house was damaged by the storm.
9. A novel is being written by her.
10. A new product will be launched next month by the company.
11. The fence has been painted white by them.
12. The exam is being studied for by the students.
13. New flowers are being planted in the garden by the gardener.
14. A new team captain has been chosen by them.
15. My car was fixed by the mechanic yesterday.