题目内容
新民主主义革命的对象是（ ）
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When Dave Perkins was young, he played a lot of games, and he was thin and strong. But when he was forty-five, he began to get fat and slow. He was not able to breathe as well as before, and when he walked rather fast, his heart beat painfully.
2. As soon as Dave had trouble in breathing and walking, he went to see a doctor.
3. Dave was afraid he was ill.
判断呕血或黑便严重度最有价值的指标是：
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