下图是一幅公路平面图，读图完成下列问题。

正方形有____条对称轴；等边三角形有____条对称轴；圆有____条对称轴。

找出下列作品、作者与出处搭配有误的一项(     )

下列对我国人民民主专政、社会主义民主、人民代表大会制度三者内在联系的表述中，正确的是（    ）

    “Early to bed, early to rise（起身）makes people healthy, wealthy and wise（健康，富有，聪明）.” This is an old English saying. Children should have ten hours' sleep every night, or they can't do their work very well. They will not be wise. The body needs exercise. Walking, running, swimming and playing ball games are all exercise. Exercise keeps the body strong.