Предмет: Физика, автор: 9txvtwkyk2

Задание на фото класс пж

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Ответы

Автор ответа: kristi249948

1

Ответ: Б) там конечно и по другому можно но так то по любому , Б

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Test

1. Read a sentence and then write another sentence with the same meaning. Begin each sentence as shown.

Model: Somebody stole my bag in the shop. My bag was stolen in the shop.

The police have arrested three men. Three men have been arrested by the police.

1. The bill included service. Service __________________________________ in the bill.

2. People don't use this road very often. This road ___________________________________.

3. They cancelled all flights because of fog. All flights _______________________________.

4. Somebody accused me of stealing the money. I ___________________________________.

5. They build a new ring-road round the city every two years.

A new ring-road ____________________.

6. I didn't realise that someone recorded our conversation.

I didn't realise that our conversation _____________________.

7. They changed the date of the meeting. The date of the meeting ________________________.

8. Somebody attacked and robbed him in the street. He ___________________________.

2. Complete the sentences. This time make a passive sentence with get and one of these verbs:

break catch sting use damage hurt steal

Model: There was a fight at the party but nobody got hurt.

1. Bob _____________________ by a bee while he was sitting in the garden.

2. How did that bottle ________________________________________ ?

3. Did any of these buildings ____________________ in the storm last night?

4. If you want to break the law, make sure that you don't _______________.

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keep pay attack give invite use ask

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1. He came to the party without __________________________________

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3. I don't like _________________________ stupid questions.

4. Few people are prepared to work without _________________________.

5. Mr. Brown doesn't like his phone _________________ by other people.

6. Most people like ___________________________________ presents.

4. For questions 1-10, choose the correct answer A, B or C.

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A work B worked C was working

2. He _______________ goodbye and then he walked away.

A said B has said C says

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A finish B am finishing C have finished

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A worked B was working C have worked

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A Don’t B Doesn’t C Didn’t

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‘Yes, I ___________________ them last weekend.’

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A spent B have spent C are spending

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‘Yes, I __________________ it half an hour ago.’

A have read B was reading C read

10. She __________________ here for three years.

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Предмет: Химия, автор: disourugs

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Карбоновые кислоты и их свойства

Вариант-1

1.Охарактеризуйте карбоновую кислоту HOOC - СН2 - СН2- СН2 - COOH по следующим критериям:

• по числу карбоксильных групп ( одноосновная, двухосновная, многоосновная)

• по природе радикала (предельные, непредельные, ароматические)

• по содержанию атомов углерода (С1-С9 низшие карбоновые кислоты, С10 и более, высшие карбоновые кислоты)

Например: СH3 – СН2 – СН2 – СН2 - COOH Одноосновная, предельная , низшая карбоновая кислота.

2.Назовите карбоновую кислоту: СН3 – СН – СН – СН2 - СООН

│ │

СН3 С2Н5

3. Составьте структурную формулу, одноосновной карбоновой кислоты :

3 – этилгексановая кислота.

4.Охарактеризуйте химические свойства карбоновой кислоты:

СН3 – СН2 – СН2 - СН2 - СООН, т.е. составьте уравнения реакций указанной карбоновой кислоты с : Zn, CaO, Cu(OH)2 , C2H5OH.

6 лет назад