There’s a beach near San Diego that is very peaceful to walk on. It’s long and flat, with fine sand shifting gently under your feet. The waves surge in, slowly and calmly, never overpowering you as you walk. The only sounds you hear are cries of gulls and a gentle wash of water. ________________
| A．Geological processes have created this useful division between the land and the sea. |
| B．This beach allows you to walk and meditate in peace. |
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