问题
单项选择题 A3/A4型题
患者，男性，58岁，吞咽有梗阻感2个月，渐加重。食管钡剂透视显示食管中段局限性管腔变窄，局部黏膜皱襞中断，形态不规整。
应诊断哪种疾病（）
A.食管静脉曲张
B.食管平滑肌瘤
C.食管癌
D.食管炎
E.食管异物
答案
参考答案：C
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患者，男性，58岁，吞咽有梗阻感2个月，渐加重。食管钡剂透视显示食管中段局限性管腔变窄，局部黏膜皱襞中断，形态不规整。
应诊断哪种疾病（）
A.食管静脉曲张
B.食管平滑肌瘤
C.食管癌
D.食管炎
E.食管异物
参考答案：C
Martin is an American boy. He is eight years old. His parents 41 _ five years ago and he is now living with his grandmother in New York. One morning, Jimmy , one of his classmates, came to his home with an exercises book in his hand. Jimmy lives in a house not far from Martin's. They often go to school together. "Would you help me with this maths problem?" Jimmy said as soon as he came into the room. "It's too hard for me and I can't work it out." "Let me try, " Martin said. "I 42 it isn't too hard for me. " Martin tried his best but he couldn't work it out, 43 . "If we had a small computer, all the problems would be 44 for us to do. " Jimmy said. "A small computer . . . , " Martin thought for a minute, then he said, "I've got an idea. We can 45 one in a shop. " "A computer is very 46 , and we don’t have enough money. " "That's OK, " said Martin. "We can ask the new president (总统) 47 some money. He said he would help anyone in trouble. I' m sure he will help us. He is very rich, you know." So they decided to write a letter to the new president. Soon the letter was finished and they hurried to the post office. In front of the post office stood a small box. They 48 the letter into the box carefully and went home happily. The next morning, they 49 the post office on their way to school. They found 50 , the box was not a post box but trash-box (果皮箱).
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