إجابة سؤال correct completion: ( أ ) 1- The ice cream was invented ... اختر رقم الاجابة الصحيحة من القائمة ب 2- The first “camera obscura” was devised..... اختر رقم الاجابة الصحيحة من القائمة ب 3- Surgical instruments that are still being used were devised.:
The ice cream was invented in the 17th century.
The first “camera obscura” was devised in the 11th century.
Surgical instruments that are still being used were devised in the medieval Islamic period.
The original solar cell was invented and tested by Bell Laboratories in 1954.