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[单选] 一名65岁的男子目前体重减轻且排便习惯改变。 哪种粪便检查有助于确定结肠癌的可能性?A 65-year-old man present with weight loss and changing bowel habits. Which stool test is useful to identify possibility of cancer of colon?
A.瓜亚考Guaiac test B.本尼迪克特测试Benedict test C.罗瑟拉测试Rothera test D.氢气呼气试验Hydrogen breath test
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