Укажи верный ответ
А: энергия связи ядра — это энергия, которую необходимо затратить,
чтобы расщепить ядро на отдельные нуклоны
Б: энергия связи ядра — это энергия, которая выделяется при соединении
свободных нуклонов в ядро
1) только А
2) только Б
3) и А, и Б
4) ни А, ни Б

какие  части  речи  имеют  формы  числа?

Раскройте скобки, употребляя глаголы

Раскройте скобки, употребляя глаголы в , Past Simple , Past Continuous , Present Continuous или Present Simple.
1. You (to know) him ? He always (to tell) a lie. 2. What he (to do) here ? - He (to wait) for his friend. 3. When I (to come) yesterday , I (to see) that my brother (to do) his lesson. 4.Where (to be) Nick? - He (to play) tennis. - He (to play) tennis well. 5. My wife (to be) in her room now. She (to sit) in the armchair and (to read) an interesting book. I (to want) to read this book ? too. 6. Where sha (to be) yesterday ? - She (to visit) her friend. They (to play) chess the whole evening. 7. What they (to do) the whole day last Sunday ? - They (to spend) the whole day in the country