单项选择题

Text After lunch, without permission from their parents, the two boys set off to explore the part of the beach which (26) by the headland. They had (27) their young sister to (28) , saying that the long walk would be (29) tiring for her. Once they had got beyond the headland, the beach (30) away endlessly before them. (31) discovering the world. There were damp, dark caves to (32) ; there were innumerable pools among the rocks, full of sea creatures; (33) here and there along the beach were those strange, yet commonplace objects, washed up and (34) by the tide. The afternoon passed quickly. The sun was already setting when the boys reluctantly (35) to make their way homeward. But long before they reached the headland, they could see that the tide had come in (36) far that they were now (37) from either end of the beach. Their only chance of (38) was to find a way up the cliff nearby. They soon found a narrow path leading to the cliff top. But half way up, their path was (39) by a large rock which they could not (40) . The two boys had to shout at the top of their voices, (41) someone might come to their (42) . Just then, to their great surprise, their father (43) over the top of the rock, and with him were two policemen. One of them climbed down a rope which was (44) over the rock. The two boys were then pulled to safety, and thus (45) from spending a miserable night on the cliff.