Предмет: Химия, автор: mashenkamarche

установите соответствие
Класс соединения
А.Аминокислоты
Б.Одноатомный спирт
В.Карбоновая кислота
Г.Предельный углеводород
Формула соединения
1.CH2(NH2)-C(O)-OH
2.C5H12
3.CH2(OH)-CH2(OH)
4.CH3OH
5.C2H5-C(O)-OH
6.C6H10

Ответы

Автор ответа: VelariN
19
А -1
Б -4
В -5
Г -2
Удачи ;)
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СРОЧНО!!!50 БАЛЛОВ!!!
Put the verbs in brackets into the Past Continuous.
e.g. Tony was walking (walk) home when it started raining.
1. What ..................................... (you/do) yesterday afternoon?
2. I ......................................... (work) on my computer all day Sunday.
3. Ian ........................................... (take) notes during the lesson.
4. We .................................... (plan) to go to the cinema, but we stayed home instead.
5. The students ............................. (study) hard because they wanted to pass the exam.
6 We .................................... (plan) to go to the zoo, but we stayed home instead.
7. Jackie ....................................... (take) notes during the lesson.
8. The students ........................ (work) hard because they wanted a good mark in the exam.
9. What ....................... (you/do) last night?
10. He ................................. (play) with his nephews all day Saturday.
Put the verbs in brackets into the Past Simple or the Past Continuous.
e.g. She left (leave) school when she was 16.
1. When I was young, I ............................... (play) in the school football team.
2. My uncle Jim ............................ (travel) to Rome when I phoned him.
3. Steve ............................. (get dressed), had breakfast and then went to work.
4. He ................................... (cook) when the lights went out.
5. David .......................... (ride) his bicycle while Kevin was skateboarding.
6. Dad ................ (do) the washing up before mum came home.
7. We ...................... (go) on holiday in July.
8. He ............................... (pass) the exam without difficulty.
9. A woman from Vancouver ................ (find) a bear in her kitchen.
10. The detective asked, ‘What ............................. (you/do) at the time of the robbery?
1) The children (play) in the park and/when it (start) to rain/
2) Ed (wear) his new leather jacket when/while he (spill) oil on it.
3) I (hurt) my leg and/as i (run) down the street.
4) Tom (clean) the swimming pool when/and Lily (paint) the fence.