A:经过定点的直线都可以用方程表示
B:经过定点的直线都可以用方程表示
C:不经过原点的直线都可以用方程表示
D:经过任意两个不同的点的直线都可以用方____ in photography around the world. People in Sempoma are not only friendly but also
____They are always glad to be your models (模特). People there are good at driving the boat ____the children. Life of the children in Sempoma is very simple. They have no homework to do because they do not ____ school. They have ____to worry about and they play ____every day in the water. If you ever go to Sempoma, make sure you find an experienced ____guide.
He or she will lead you to all the fantastic sights.