Title: ไม่จำเป็น

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. แต่ละย่อหน้าจะเป็นการทดสอบ

Save test: ใช้นี้หากคุณต้องการแชร์การทดสอบพิมพ์นี้ (เฉพาะสำหรับผู้ใช้ที่ได้รับการยืนยัน)