پرسش‌ها با تگ (چهار گزینه ای)

سلام من الکس هستم  و  تازه  به جمعتون اضافه شدم.اول  سوالات اسون می پرسم ازتون.

Which of the following is NOT a primary color in the additive color system?

Who is credited with the theory of relativity?

What is the process by which plants convert light energy into chemical energy?