节能型住宅要求窗户占墙体的面积不能超过多少？（）
A.50%
B.60%
C.70%
D.40%
参考答案：B
选择与图片对应的句子。
1. 2. 3. 4. 5. 6.
( ) ( ) ( ) ( ) ( ) ( )
A. Turn on the light. B. Sweep the floor. C. Open the door.
D. Clean the board. E. Put up the picture. F. Clean the window.
2.
3.
4.
5.
6.