11个月婴儿，生后曾有青紫窒息抢救史。患儿于半岁内曾经智能筛选检查未发现异常。母乳喂养，未加辅食，近2个月来面色渐黄，表情呆滞，智力发育倒退，头及全身轻度震颤。血红蛋白88g/L，RBC2.0×1012/L。
临床诊断为（）
A.再生障碍性贫血
B.营养性缺铁性贫血
C.维生素B12缺乏性巨幼细胞贫血
D.缺血缺氧性脑病后遗症+缺铁性贫血
E.叶酸缺乏性巨幼细胞贫血
参考答案：C
On a cold afternoon in winter, Robert was walking on the bridge. There was hardly any 1 on the river. Near the bridge, however, there was a small canoe(独木舟), with a boy in it. He was not 2 many clothes. He was going to walk when he heard a cry, “Help!” He looked down and saw the boy was in water and his canoe was far away. Robert was a good 3 . Taking off his clothes, he jumped into the river. The cold water made him tremble(颤抖)all over. Soon he 4 the boy and started to swim towards the river bank. Just then he saw a motor boat under the bridge. There were some people on it, all 5 in his direction. Robert 6 to swim towards the boat. “Help me,” he shouted 7 he got near the boat. He looked up into a row of faces. “Why?” he thought. “They look so 8 .” Silently they helped the boy into the boat. But they did not move to save Robert. “Aren’t you going to help me 9 , too?” Robert asked. “You!” said one of the men, who was standing next to a large camera, “Why, we were making a film and you spoiled (搅乱) the whole afternoon’s work! You can 10 in the water.”
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