Тест на тему Русский язык

Тест по алгебре: Решение квадратных уравнений через дискриминант (класс 8)

Инструкция: для уравнения ax^2 + bx + c = 0 найдите дискриминант Δ = b^2 - 4ac.

• Если Δ > 0, уравнение имеет два вещественных корня.
• Если Δ = 0, уравнение имеет один вещественный корень.
• Если Δ < 0, вещественных корней нет.

1. Решите квадратное уравнение: x^2 - 5x + 6 = 0. Выберите верный ответ. A) x = 2 и x = 3 B) x = -2 и x = -3 C) x = 1 и x = 6 D) Нет вещественных корней Ответ: A

2. Решите: x^2 - 4x + 4 = 0. A) x = 0 B) x = 2 C) x = -2 D) x = 4 Ответ: B

3. Уравнение: 2x^2 - 3x + 1 = 0. Найдите корни. A) x = 1/2 и x = 1 B) x = 0 и x = 1 C) x = -1 и x = 1 D) x = 2 и x = -1 Ответ: A

4. Уравнение: x^2 + x + 1 = 0. Δ < 0, значит вещественных корней нет. A) x = -1 B) x = 0 C) Нет вещественных корней D) x = 1 Ответ: C

5. Решите: 3x^2 - 2x - 1 = 0. A) x = 1 и x = -1/3 B) x = -1 и x = 1/3 C) x = 2 и x = -1 D) x = 0 и x = -1 Ответ: A

6. Уравнение: 5x^2 + 6x + 2 = 0. A) x = -3/5 B) Нет вещественных корней C) x = 1/5 D) x = -2/5 Ответ: B

7. Решите: x^2 - x - 6 = 0. A) x = 3 и x = -2 B) x = 6 и x = -1 C) x = -3 и x = 2 D) x = 0 и x = -6 Ответ: A

8. Уравнение: 4x^2 - 4x + 1 = 0. A) x = 1 B) x = 0 C) x = 1/2 D) x = -1/2 Ответ: C

9. Решите: 6x^2 + x - 2 = 0. A) x = 1/2 и x = -2/3 B) x = -1 и x = 2/3 C) x = 0 и x = -1/2 D) x = 1 и x = -1 Ответ: A

10. Уравнение: 2x^2 + 4x + 5 = 0. A) x = -2 B) Нет вещественных корней C) x = 2 D) x = -1 Ответ: B

Тест по английскому языку для 8 класса: Неправильные глаголы

Инструкция: Вставьте в пропуски правильные формы неправильных глаголов. В каждом предложении укажите простую прошедшую форму (Past Simple) глагола в скобках.

Вопросы:

1. Yesterday, I ___ (go) to the cinema with my friends.
2. She ___ (see) a beautiful bird in the garden last week.
3. They ___ (do) their homework before dinner yesterday.
4. We ___ (have) a great time at the party last Saturday.
5. He ___ (take) his dog for a walk in the park yesterday.
6. I ___ (eat) sushi for the first time last month.
7. She ___ (find) her lost keys under the sofa.
8. The children ___ (play) outside until it got dark.
9. He ___ (write) a letter to his pen pal last summer.
10. They ___ (swim) in the lake during their vacation.
11. I ___ (drink) lemonade at the picnic yesterday.
12. She ___ (give) him a book for his birthday.
13. We ___ (buy) some groceries before the storm.
14. He ___ (feel) happy when he heard the news.
15. The teacher ___ (say) that we have a test next week.
16. I ___ (meet) my best friend in kindergarten.
17. They ___ (sing) a song at the school concert.
18. She ___ (speak) to her friend on the phone last night.
19. He ___ (make) a delicious cake for the party.
20. We ___ (lose) our way while hiking in the mountains.
21. I ___ (choose) a blue dress for the event.
22. They ___ (come) to the conclusion quickly.
23. She ___ (know) the answer to the question.
24. He ___ (ride) his bike to school last Friday.
25. We ___ (begin) to study for the exam early.
26. They ___ (bring) snacks to the movie night.
27. I ___ (tell) her about my vacation last week.
28. She ___ (think) about her future plans.
29. He ___ (shine) a flashlight in the dark.
30. We ___ (sell) our old car last year.
31. They ___ (wear) their new jackets on the trip.
32. I ___ (teach) my younger brother how to ride a bike.
33. She ___ (cut) the vegetables for the salad.
34. We ___ (fight) against our opponents in the championship.
35. They ___ (sleep) during the long journey.
36. He ___ (ring) the bell before entering the room.
37. I ___ (draw) a picture for my art class yesterday.
38. She ___ (understand) the lesson perfectly.
39. We ___ (seek) help from our neighbors.
40. They ___ (throw) a surprise party for her birthday.

Ответы:

1. went
2. saw
3. did
4. had
5. took
6. ate
7. found
8. played
9. wrote
10. swam
11. drank
12. gave
13. bought
14. felt
15. said
16. met
17. sang
18. spoke
19. made
20. lost
21. chose
22. came
23. knew
24. rode
25. began
26. brought
27. told
28. thought
29. shone
30. sold
31. wore
32. taught
33. cut
34. fought
35. slept
36. rang
37. drew
38. understood
39. sought
40. threw

Удачи на экзаменах!