After lunch, without permission from parents, the two boys set off to explore the part of the beach which lay beyond the headland(陆岬). They had persuaded their young sister to 1 saying that the long walk would be too 2 for her. Once they had got in the headland, the beach reached away endlessly before them. It was like 3 a new world. There were damp, dark caves to 4 there were many 5 among the rocks, full of sea lives. Here and there along the beach were those 6objects, washed up and 7by the tide.(潮汐)

    The afternoon passed 8The sun was already 9 when the boys reluctantly (恋恋不舍)10to make their 11 homewards. But long before they reached the headland, they could see that tide had come in so sudden that they were now 12from either end of the beach. Their only chance of 13was to find a way up the cliff(悬崖) nearby.

    They soon find a narrow path 14the cliff top. But half way up their path was15by a large rock which they could not climb 16. The two boys had to17at the top of their voices,18 that someone might19over the top of the rock. Finally came their father and two policemen.20 of them climbed down a rope which was lowered over the rock. The boys were then pulled to safety, and thus saved from spending a terrible night on the cliff.