حل الوحدة الثامنة انجليزي ثاني متوسط ف1 1448

حل كتاب الانجليزي الوحدة الثامنة للصف الثاني المتوسط الفصل الاول 1448, حلول الوحدة 8 انجليزي ثاني متوسط ف1 1448

Colds usually last for five to seven days and are caused by viruses. The body's own defense mechanisms need to fight the viruses. Unfortunately, there are more than 80 different constantly mutating rhinoviruses. So vaccination against colds is impossible. Medicines provide temporary relief from symptoms, but they cannot cure the cold.
The flu has the same symptoms as the traditional cold. Additional symptoms are a high fever and severe muscle aches and pains. The effects of the flu can also be far more serious. It can cause pneumonia and kill its victims, in the past, the flu killed more people than any other viral disease. For example, 20 million people of all ages died in the 1919 fu epidemic. it actually affected younger people more than old because their bodies didn't have defenses against the virus. Nowadays, there are vaccines for the flu that protect from some viruses. Unfortunately, new viruses appear all the time.

تنبيه هذه الحلول جهد تعليمي مساعد للطلاب وأولياء الأمور في مراجعة المنهج وتسهيل التعلم.
حقوق الكتب المدرسية محفوظة لوزارة التعليم.