问题
单项选择题
哪种原因不引起黑便（）
A.胃溃疡出血
B.胆道出血
C.服食大量新鲜水果
D.口服含铁的补血药
E.口服铋剂
答案
参考答案：C
解析：胃溃疡出血、胆道出血属上消化道出血，表现为黑便；口服含铁的补血药、铋剂，可使粪便变黑，一般为灰黑色无光泽，隐血试验阴性；服食大量新鲜水果不引起黑便。
搜题请搜索小程序“爱下问搜题”
哪种原因不引起黑便（）
A.胃溃疡出血
B.胆道出血
C.服食大量新鲜水果
D.口服含铁的补血药
E.口服铋剂
参考答案：C
解析：胃溃疡出血、胆道出血属上消化道出血，表现为黑便；口服含铁的补血药、铋剂，可使粪便变黑，一般为灰黑色无光泽，隐血试验阴性；服食大量新鲜水果不引起黑便。
When Ben Franklin was only a boy, he always wanted to know about things. He was always asking his father and brothers “What?” and “How?” and “Why?” They couldn’t always tell him what he wanted to know. When they couldn’t tell him, Ben tried to find out for himself. Many times Ben did find out things that no one knew before. The other boys would say, “That Ben Franklin! He’s always finding out something new!” Ben lived close to the water. He liked to go there to see the boats. He saw how the wind blew them across the water. One day Ben said to himself, “Why can’t the wind help me float across the water? And I’m going to try.” Ben got his big kite. He took hold of the kite string and ran with it. The wind took the kite up into the air. Then Ben jumped into the water. The wind blew the kite high into the air. Ben began to float across the water. Soon he was on the other side, and he had not worked at all. One boy shouted, “Look at Ben floating across the water! His kite takes him to the other side without any work!” “Yes,” said another. “He’s always finding new ways to do things.” 小题1:When he was only a child, Ben .
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