определи пары чисел. сумма двух чисел 27,их разность -21: - и - ,найди их частное-.

образуется ли осадок гидроксида железа 2 если к 20 мл 0,005 М раствору сульфата железа прибавить 10 мл 0,5М раствора аммиака

451,537 округлить до сотых

Write a, an or the in each gap. If no article is necessary, put a dash (—).

Look at this picture. It’s (0) a photo of my best friend Elise. She's tall and she's got (1)_ short red hair. She’s got (2)_dark skin and blue eyes - she’s beautiful! She’s beautiful on the inside too - she’s (3)_kind and generous person. She’s always cheerful and optimistic and has got (4)_amazing smile and a funny laugh. She’s from (5)_France. Her mother is (6)_French and her dad comes from Germany. Elise is very clever. She can speak French and (7)_German. I like (8)_ clothes Elise wears. She's very fashionable and she only shops at really cool places. In this picture, she’s wearing the dress I gave her for her birthday. When Elise finishes secondary school, she wants to work as (9) _ chef in a famous restaurant. I think I’m very lucky to have (10)_friend like Elise.