My nose is long. My ears are big. I like to eat bananas. I am an ______.
A:cat
B:elephant
C:rabbit.
开学整理教室时,老师总是先把每一列最前和最后的课桌摆好,然后再依次摆中间的课桌,一会儿一列课桌摆在一条线上,整整齐齐,这是因为____.