Тест на тему Бездарная гласная

Вот тест по теме Валентность для 8 класса. Тип вопросов: открытые. Количество вопросов: 15. Без ответов.

1. Что такое валентность элемента? Дайте краткое определение и объясните, зачем она нужна в химии.

2. Назовите типичные значения валентности следующих элементов в наиболее распространённых неорганических соединениях: водород (H), кислород (O), азот (N), углерод (C).

3. Опишите связь между правилом октета и валентностью. Как правило, какое число связей стремится образовать элемент в большинстве молекул?

4. Укажите валентности входящих в молекулу воды H2O: валентность водорода и валентность кислорода.

5. Укажите валентности входящих в молекулу диоксида углерода CO2: валентность углерода и валентность кислорода.

6. Укажите валентности входящих в молекулу аммиака NH3: валентность азота и валентность водорода.

7. Укажите валентности входящих в молекулу метана CH4: валентность углерода и валентность водорода.

8. Укажите валентности входящих в формулу поваренной соли NaCl: валентность натрия и валентность хлора.

9. Укажите валентности элементов в известковой формуле CaCO3: валентность кальция, валентность углерода и валентность кислорода.

10. Объясните, почему кислород чаще образует две связи в молекулах. Приведите два примера веществ, где это наблюдается.

11. Что произойдет с молекулой, если один из элементов образует на одну связь меньше своей валентности? Приведите конкретный пример.

12. Что произойдет с молекулой, если один из элементов образует на одну связь больше своей валентности? Приведите конкретный пример.

13. Опишите пошаговый метод определения валентности по формуле вещества: какие данные нужно взять во внимание и как на их основе определить валентности входящих элементов.

14. Приведите два примера веществ, где встречаются элементы с разной валентностью, и поясните, как это влияет на формулы веществ (на примеры NaCl и CO2, если удобно).

15. По формуле H2SO4 определите валентности всех входящих элементов и объясните, почему именно такие связи образованы в молекуле серной кислоты.

Тест по географии на тему: Социально-экономическая характеристика США

Класс: 11

Вопросы с единственным выбором:

1. Какой из следующих факторов не является основным экономическим ресурсом США?

   • a) Нефть
   • b) Природные ресурсы
   • c) Квалифицированная рабочая сила
   • d) Сельское население
     Ответ: d) Сельское население

2. Какой штат является наиболее населённым в США?

   • a) Техас
   • b) Калифорния
   • c) Нью-Йорк
   • d) Флорида
     Ответ: b) Калифорния

3. Какой сектор экономики США занимает наибольшую долю в ВВП страны?

   • a) Сельское хозяйство
   • b) Промышленный сектор
   • c) Услуги
   • d) Строительство
     Ответ: c) Услуги

4. Какой из указанных городов является финансовым центром США?

   • a) Чикаго
   • b) Лос-Анджелес
   • c) Нью-Йорк
   • d) Сан-Франциско
     Ответ: c) Нью-Йорк

5. Какой процент населения в США живет за чертой бедности согласно последним данным?

   • a) 5%
   • b) 10%
   • c) 15%
   • d) 20%
     Ответ: c) 15%

6. Какой из указанных регионов считается самым промышленно развитыми в США?

   • a) Южные штаты
   • b) Западный берег
   • c) Средний Запад
   • d) Северо-восток
     Ответ: d) Северо-восток

7. Какой из следующих факторов связан с высокой миграцией населения в США?

   • a) Политическая стабильность
   • b) Высокие налоги
   • c) Природные катастрофы
   • d) Культурная однородность
     Ответ: a) Политическая стабильность

8. Какое сырьё является основным экспортируемым товаром США?

   • a) Золото
   • b) Продукты питания
   • c) Оборудование
   • d) Нефть
     Ответ: c) Оборудование

9. Какой из следующих факторов мог повлиять на экономический рост страны?

   • a) Увеличение налогов
   • b) Развитие технологий
   • c) Снижение уровня образования
   • d) Закрытие заводов
     Ответ: b) Развитие технологий

10. Какой из следующих актов способствовал интеграции и экономической политике США в XX веке?

    • a) Закон о правах граждан
    • b) Новый курс Рузвельта
    • c) Закон о всеобъемлющем здравоохранении
    • d) Закон о санитарной службе
      Ответ: b) Новый курс Рузвельта

Конец теста.

Тест по английскому языку: Past Perfect Continuous

Класс: 9
Тема: Past Perfect Continuous
Количество вопросов: 30

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Вопрос 1:
Which sentence is correct?
a) They had been living here for ten years before they moved.
b) They were living here for ten years before they moved.
c) They live here for ten years before they moved.

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Вопрос 2:
What is the form of the verb in this sentence? "She was tired because she had been studying all night."
a) had studied
b) had been studying
c) studied

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Вопрос 3:
Which of the following is an example of Past Perfect Continuous?
a) She had watched TV before dinner.
b) They had been playing football for two hours.
c) I will have finished my homework.

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Вопрос 4:
Choose the correct option:
By the time the party started, we __________ for three hours.
a) had been waiting
b) have waited
c) were waiting

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Вопрос 5:
Which sentence is correct?
a) He had been working hard when he got the promotion.
b) He worked hard when he got the promotion.
c) He was working hard when he got the promotion.

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Вопрос 6:
What is the negative form of "They had been living in Paris"?
a) They hadn't been living in Paris.
b) They didn't live in Paris.
c) They have not been living in Paris.

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Вопрос 7:
Which sentence indicates a cause and effect using Past Perfect Continuous?
a) She had been exercising, so she felt great.
b) She exercised, so she felt great.
c) She has been exercising, so she feels great.

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Вопрос 8:
Choose the correct option:
I was happy because I __________ English for two years.
a) had been learning
b) was learning
c) have learned

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Вопрос 9:
Identify the correct sentence:
a) They had been playing all day before it started to rain.
b) They were playing all day before it started to rain.
c) They play all day before it started to rain.

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Вопрос 10:
Fill in the blank:
When we arrived, the kids __________ on the swings.
a) had been playing
b) were playing
c) play

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Вопрос 11:
Which of the following sentences uses the Past Perfect Continuous correctly?
a) I had seen that movie before.
b) She had been reading the book for weeks.
c) We will have been there before.

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Вопрос 12:
Choose the correct form:
He was happy because he __________ his homework for three hours.
a) had been doing
b) was doing
c) has done

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Вопрос 13:
What is the correct form of the verb? "They were out of breath because they __________."
a) had been running
b) have been running
c) were running

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Вопрос 14:
Identify the correct sentence:
a) I have been studying before I passed the exam.
b) I had been studying before I passed the exam.
c) I was studying before I passed the exam.

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Вопрос 15:
How would you express this idea in Past Perfect Continuous? "They started to work at 9 AM."
a) They had been working since 9 AM.
b) They worked since 9 AM.
c) They will have been working since 9 AM.

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Вопрос 16:
Choose the correct answer:
After they had been eating, they went out for a walk.
a) had been eating
b) were eating
c) have eaten

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Вопрос 17:
Fill in the blank:
She was tired because she __________ all night.
a) had been working
b) has worked
c) worked

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Вопрос 18:
Which sentence uses Past Perfect Continuous incorrectly?
a) He had been waiting for an hour before she arrived.
b) They had been travel before they came back.
c) I had been running when it started to rain.

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Вопрос 19:
What is the correct option?
Before the meeting started, they __________ for an hour.
a) had been discussing
b) were discussing
c) have discussed

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Вопрос 20:
Choose the correct sentence:
a) She had made dinner when I arrived.
b) She had been making dinner when I arrived.
c) She made dinner when I arrived.

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Вопрос 21:
What is the negative form of "He had been playing soccer"?
a) He hadn't played soccer.
b) He has not been playing soccer.
c) He hadn't been playing soccer.

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Вопрос 22:
Choose the correct form:
We were exhausted because we __________ all day.
a) had been working
b) have worked
c) worked

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Вопрос 23:
Which sentence indicates a past action that continued up until another past action?
a) They had been cooking for hours before the guests arrived.
b) They cooked for hours before the guests arrived.
c) They have been cooking before the guests arrived.

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Вопрос 24:
Choose the correct answer:
Because it was hot outside, they __________ at home for a while.
a) had been staying
b) were staying
c) have been staying

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Вопрос 25:
Fill in the blank:
I was proud because I __________ hard for this exam.
a) had been studying
b) was studying
c) have studied

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Вопрос 26:
Which sentence is correct?
a) Before I got the job, I had been applying for months.
b) Before I got the job, I was applying for months.
c) Before I got the job, I have applied for months.

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Вопрос 27:
Choose the correct option:
They were happy because they __________ their goal.
a) had been achieving
b) achieved
c) had achieved

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Вопрос 28:
What is the correct answer?
I felt out of shape because I __________ since January.
a) had been exercising
b) have exercised
c) exercised

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Вопрос 29:
Which of the following is NOT a Past Perfect Continuous sentence?
a) She had been dancing before she fell.
b) He had been working on his project.
c) They will have been studying.

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Вопрос 30:
Fill in the blank:
By the time he got to the station, the train __________.
a) had been leaving
b) was leaving
c) had left

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Удачи на экзаменах!

Тест по Английскому языку - Past Simple (5 класс)

Выберите правильное слово в Past Simple:

1. She ___ (do) her homework yesterday.

2. They ___ (play) football last Saturday.

3. He ___ (go) to the park with his friends.

4. Mary ___ (watch) a movie on Friday.

5. We ___ (have) a picnic in the park.

6. The cat ___ (sleep) all day yesterday.

7. The children ___ (eat) ice cream after school.

8. He ___ (read) a book in the evening.

9. I ___ (visit) my grandparents last weekend.

10. Sarah ___ (dance) at the party.

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Ответы к тесту:

1. did
2. played
3. went
4. watched
5. had
6. slept
7. ate
8. read
9. visited
10. danced

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Надеюсь, этот тест поможет школьникам подготовиться к теме Past Simple по английскому языку. Удачи на экзамене!