问题
单项选择题 B型题
多数十二指肠出血是（）
A.呕血，便血
B.呕吐大量鲜血
C.柏油样便
D.便血
E.腹穿不凝血
答案
参考答案：C
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多数十二指肠出血是（）
A.呕血，便血
B.呕吐大量鲜血
C.柏油样便
D.便血
E.腹穿不凝血
参考答案：C
An amazing teacher Years ago a John Hopkins professor gave a group of graduate students this task: Go to the slums（贫民窟）. Took 200 boys, between the ages of 12 and 16, and 31 their background and environment, then 32 their chances for the future. The students, after consulting social statistics, talking to the boys, and collecting much data， concluded that 90 percent of the boys would 33 some time in prison. Twenty-five years later 34 group of graduate students was given the job of 35 the prediction. They went back to the same area. Some of the boys---by then 36 ---were still there, a few had died, some had moved away, but they got in touch with 180 of the 37 200.They found that only four of the group had ever been sent to 38 . Why was it that these men, who had lived in a breeding place of crime, had such a surprisingly good record? The researchers were 39 told,“Well, there was a teacher…” They pressed（追问）further, and found that in 75 percent of the cases it was the same woman. The researchers went to this teacher, now living in a home for retired teachers. How had she had this brilliant 40 on that group of children? Could she give them any reason why these boys should have remembered her? “No,” she said,“No，I really couldn’t.”And then， thinking back 41 the years, she said musingly（沉思地）,42 to herself than to her questioners,“Ｉloved those boys…”
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