شرکت در آزمون آنلاین زبان انگلیسی 1 - زبان انگلیسی 1 | آزمون شماره 9718

In fact , photography is not my job ; I take photos for .............................. .

The brain is one of the most sensitive and complex organs in the body. The brain … … only about two percent of the body’s weight, but it receives about 20 percent of the blood that the heart … … . This suggests that the brain needs … … attention and protection than other seemingly important parts of the body.

The brain’s ability to organize and change itself throughout life is a truly … … thing. In one study, the brain activity of people born blind was compared to those with normal eyesight and found that a part of their brain that is … … connected to the eyes could coordinate itself with the proccessing of sound in formation rather than visual perception.