An Allergy is a hypersensitivity of the body to any substance. This substance can be any chemical ingredient, product, hair, dust, pollen or a germ. Today it is well established that allergens may be substances produced within the body. They are called antiallergenic or autoallergens. They are natural – unmodified tissue proteins that are isolated from the systems that are responsible for immunity. And purchased – proteins that acquire foreign properties against thermal, radiation, chemical, bacterial, viral, and other factors. For example, an allergic reaction develops with glomerulonephritis, rheumatism, arthritis, hypothyroidism.
19 Head for the castle and you won’t get lost. direction
Go in the direction of the castle and you won’t get lost.
20 Taking a risk doesn’t frighten me. afraid
I am not afraid of taking a risk.
21 How likely are you to pass the exam? chances
What are your chances of passing the exam?
22 Sadie is talented at telling jokes. talent
Sadie has a talent for telling jokes.
23 I’ve finally started taking Chinese lessons. round
I’ve finally got round to taking Chinese lessons.
24 I didn’t understand maths when I was at school. used
I didn't use to understand maths when I was at school.
25 Living in a foreign country isn’t strange to me now. got
I have got used to living in a foreign country.
26 I’ll stop the car over there so you can get out. off
I’ll drop you off over there.