根据下图提示的信息，完成1—3题。
1、我国的五种地形中，图中未体现出来的是[ ]
A．盆地
B．高原
C．平原
D．丘陵
2、上图所示的我国主要地形类型，按面积由小到大排列正确的是[ ]
A．①②③④
B．④①③②
C．②③④①
D．①④③②
3、上图四类地形中，在我国第二级阶梯上分布最广的是[ ]
A．①②
B．③④
C．①③
D．②④
1、C
2、D
3、B
It was the last lesson before holidays. The students very happy. Their English teacher was very happy, .The teacher played nice games with them. He sang some nice songs, and then he went to the blackboard and wrote “SMILES” it.“This is one of the words in English”,he said to the class. The class laughed, and then one girl and said,“Why is it one of the longest words in English?”The teacher said for a while. Then he smiled and said,“Because there is a mile between the letter and the last.”
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