①画出把三角形绕点O顺时针旋转90°后的图形C．

②按2：1的比画出三角形缩小后的图形B．

③画一个与原三角形面积相等的平行四边形．

On a visit to England, Wendy saw a car accident and the police officer asked her some questions.
The police officer asked her1she had seen the accident happen. She said “yes”. She was 2to go across Green Street at that time. And the 3asked her where she was standing. Wendy told him that she was 4the south side of Green Street, near the corner. She wanted to 5to the north side of Green Street. The police officer asked her what she6. Wendy said that a white car with an “L” sign on it came along Green Street to City Road. It did not 7at the traffic light. That surprised her very much. The driver was a man with a woman sitting beside8. He drove straight out into City Road without 9left and hit a yellow car which was going to the north. Then both10crossed the road and went into the street about 20 meters away. They finished up on the east side of City Road.
The policeman said thanks to Wendy and asked her name and address.

①来到桂林，你就像走进了一幅画卷____［A．juǎn B．juàn

②我们在洞里走了一转____ A．zhuàn B．zhuǎn。

③我替父亲把炉火闷____ A．mēn B．mèn好。

④小镇上来了一群逃难____ A．nán B．nàn的人。