完形填空 。 It was a cold winter's afternoon. Robert stopped for a moment as he crossed the bridge and looked down at the river below. There were hardly any (1) on the river. (2)the bridge, however, almost directly below, there was a small canoe, with a boy in it. He was (3) wearing many clothes, Robert (4). He trembled and walked on. Just then he heard a cry, 'Help! Help!' the cry(5) from the river. Robert looked down the boy was (6) the water and his canoe was (7) away.'Help! Help!'he called again. Robert was a good (8). Taking off his clothes, he dived into the river. The (9) water made him tremble all over, but in a few seconds he reached the (10).'Don't be afraid,' he said and started to swim towards the river bank, (11) the boy with him. But at that (12) he noticed a large motor boat under the bridge. There were several people on the boat, all (13) his direction. Robert decided to swim towards the boat. 'Give me a hand,' he shouted (14) he got near the boat. He (15) up into a row of faces. 'It's funny,' he thought. 'They look so (16)'Sile- ntly they helped the boy into the boat and (17) him in a blanket. But they did not move to (18) Robert. 'Aren't you going to pull me (19) too?' Robert asked. 'You!' said one of the men. Robert noticed that he was standing next to a large (20). 'You! Why, we were making a film and you spoiled (破坏) a whole afternoon's work! You can stay in the water!' (     )1.Ａ：fish (     )2.Ａ：From (     )3.Ａ：then (     )4.Ａ：noticed (     )5.Ａ：happened (     )6.Ａ：on (     )7.Ａ：running (     )8.Ａ：swimmer (     )9.Ａ：deep (     )10.Ａ：canoe (     )11.Ａ：pushing (     )12.Ａ：place (     )13.Ａ：seeing (     )14.Ａ：while (     )15.Ａ：turned (     )16.Ａ：nervous (     )17.Ａ：wrapped (     )18.Ａ：save (     )19.Ａ：on (     )20.Ａ：boat Ｂ：boats Ｂ：Towards Ｂ：also Ｂ：saw Ｂ：went Ｂ：within Ｂ：floating Ｂ：guard Ｂ：cool Ｂ：bank Ｂ：dragging Ｂ：period Ｂ：smilling at Ｂ：till Ｂ：looked Ｂ：afraid Ｂ：left Ｂ：thank Ｂ：out Ｂ：blanket Ｃ：waves Ｃ：Near Ｃ：only Ｃ：guessed Ｃ：arrived Ｃ：in Ｃ：flowing Ｃ：soldier Ｃ：dirty Ｃ：boy Ｃ：holding Ｃ：second Ｃ：looking in Ｃ：for Ｃ：hurried Ｃ：excited Ｃ：placed Ｃ：help Ｃ：away Ｃ：camera Ｄ：sounds Ｄ：Beyond Ｄ：not Ｄ：said Ｄ：came Ｄ：under Ｄ：pulling Ｄ：sportsman Ｄ：cold Ｄ：bridge Ｄ：catching Ｄ：moment Ｄ：shouting to Ｄ：as Ｄ：stood Ｄ：angry Ｄ：put Ｄ：wrap Ｄ：off Ｄ：screen