Title: אופציונלי

Text: There was a piece of glass put in the middle of the tank dividing it in two. Then the fish were placed in one side. They soon learned that they could not swim all through the tank, but only in one part. After a while the glass was removed. The fish were not thrilled to have the whole tank to swim in. They didn't know. They continued to stay in their customary part of the tank. כל פסקה תהיה מבחן.

Save test: השתמש בזה אם אתה רוצה לשתף את המבחן הזה בהקלדה (רק למשתמשים מאומתים).