The leaping stream, playing and singing all the way, flows through the foot of the mountain. ( )

2.( 1) I hope I can succeed.

Everyone should keep his promise.

If I were the sunshine, I would light up all the darkness.

If I were a spring breeze, I would bring great vitality.

If I were a flower, I would decorate the beautiful world.

Math: 1. The shortest line segment (vertical line segment) from a point to a known straight line.

2. In the following phenomena, there are translational (A B, E) and rotational (C D F).

A. dogs pull sleds B. raise the national flag C. open the bottle cap D. swing E. pull out the drawer F. turn the steering wheel