1.Сравните выражения 18×20+18×3...18×23 13×(40+6)...13×40+13 26×10+26×4...26g×40 15×(30+8)...15×30+8

in the us you have to be very careful about the words you use to speak about minorities . you will be accused of discrimination if you show disrespect toward different groups. making ethnic jokes is very hurtful to people and shows politically incorrect behaviour. you will be accused of racism if you use the improper term for people who have black skin. the us no longer uses the word negro like in the old days . the term negro does not refer to a person's country of origin so it is not politically correct . most black people in the us now prefer the term 'african american '

В каком предложение существительное может быть и подлежащим , и обращением?(знаки препинания не расставлены).

1)Юра у тебя есть запасная ручка?

2)Я уже здоров доктор

3Почему берёзка наклонилась?

4)Мне бабушка гулять не хочется.